CN105789568A - Sulfur element doped lithium-rich lithium manganese oxide material and preparation method thereof - Google Patents
Sulfur element doped lithium-rich lithium manganese oxide material and preparation method thereof Download PDFInfo
- Publication number
- CN105789568A CN105789568A CN201410774626.8A CN201410774626A CN105789568A CN 105789568 A CN105789568 A CN 105789568A CN 201410774626 A CN201410774626 A CN 201410774626A CN 105789568 A CN105789568 A CN 105789568A
- Authority
- CN
- China
- Prior art keywords
- lithium
- manganese
- manganese oxide
- preparation
- cathode material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention discloses a positive electrode material of a lithium ion battery and a preparation method thereof, and specifically relates to a sulfur element doped lithium-rich lithium manganese oxide material and a preparation method thereof. A general formula of the sulfur element doped lithium-rich lithium manganese oxide material is Li<1.2>M<x>Mn<2-x>O<4-y>S<y>, wherein x is greater than or equal to 0.2 and less than 0, and y is greater than or equal to 0.2 and less than 0. Doped positive ions and sulfur atoms are uniformly doped in a lattice of a lithium manganese oxide material according to a certain proportion by using a sol-gel method and a chelator, so that a Jahn-Teller effect of the lithium manganese oxide material is effectively inhibited, a defect of low specific capacity of the lithium manganese oxide caused by the fact that existing spinel lithium manganese oxide can use only a capacity of a 4V area is overcome, the sulfur element doped lithium-rich lithium manganese oxide material can use capacities of both the 4V area and a 3V area, and the discharge specific capacity of the sulfur element doped lithium-rich lithium manganese oxide material is greater than 180mAh/g. The sulfur element doped lithium-rich lithium manganese oxide material can be used as the positive electrode material of small or large lithium ion batteries.
Description
Technical field
The present invention relates to a kind of lithium manganate material and preparation method thereof, particularly relate to a kind of doping element sulphur richness lithium lithium manganate material being applied to anode material for lithium-ion batteries and preparation method thereof.
Background technology
Lithium ion battery, as a kind of novel battery, has the plurality of advantages such as voltage is high, lightweight, volume is little, self discharge is few, is therefore widely used in the fields such as portable electrical appliance, such as mobile phone, notebook computer, digital product etc..Cobalt acid lithium material is simple due to its preparation method, stability of material is good, the factors such as manufacturing process is ripe become the anode material for lithium-ion batteries that consumption on market is more, but cobalt resource is deficient, material price is expensive, and cobalt has important application on electronic applications and military affairs, belongs to strategic resources, therefore its application receives certain restriction.
Lithium manganate having spinel structure has the advantages such as raw material resources are abundant, cheap, safety is good, non-environmental-pollution, easy preparation, it is believed that be one of positive electrode most with development and application prospect;Especially its outstanding security performance and price advantage, become the preferred material of lithium ion battery for electric vehicle positive electrode.But lithium manganate material still suffers from two than more serious shortcoming: one is that lithium manganate material is currently available that specific capacity little (about 110mAh/g);Two is that it exists comparatively serious capacity fade problem.
For the capacity fade problem of lithium manganate material, current research thinks that caused by the dissolving mainly due to Jahn-Teller effect and manganese, therefore the discharge voltage of manganate cathode material for lithium can not be too low, otherwise may result in the cycle performance of material and worsens.Research shows, the preparation method of lithium manganate having spinel structure material and structure composition are very big to its Electrochemical Performances.The good spinel-type positive electrode of chemical property can be synthesized by method of modifying such as suitable ion doping, Surface coating.Solving lithium manganate having spinel structure capacity fade problem at present adopts maximum methods to be cation doping, the cycle performance aspect improving lithium manganate having spinel structure is had been achieved for good result by the method for cation doping, but it is disadvantageous in that the cation of doping replaces the position of Mn, reduces the initial capacity of material.Additionally, current research focuses primarily upon the 4V district current potential of LiMn2O4, it is greatly reduced charge and discharge voltage range, causes that the capacity in the 3V district of LiMn2O4 cannot utilize, have impact on the actual capacity of material.
Summary of the invention
Rich lithium lithium manganate material that it is an object of the invention to provide a kind of element sulphur that adulterates and preparation method thereof.This material is used as anode material for lithium-ion batteries, there is high power capacity and long-life feature, overcome current lithium manganate having spinel structure only with the capacity in 4V district thus the shortcoming causing its specific capacity relatively low, the material of the present invention can give play to the capacity in its 4V district and 3V district simultaneously, and therefore its specific capacity is generally higher than 180mAh/g.This material can serve as small-sized and large-scale anode material for lithium-ion batteries.
For solving above-mentioned technical problem, technical scheme is as follows:
A kind of manganate cathode material for lithium, it is characterised in that the formula of described manganate cathode material for lithium is Li1.2MxMn2-xO4-ySy, wherein 0 >=x >=0.2,0 >=y >=0.2.
Described doped chemical M is one or more in Li, Na, K, Mg, Ca, Sr, Ba, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ag, Ce, Sm, Eu, Al, Si, In, Ga, Ge, Sn, Pb, B, Sb, Bi, Se, Te.
The preparation method of a kind of lithium manganate material, comprises the steps:
(1) adopting kipp gas generator principle by dilute sulfuric acid and Iron sulfuret. hybrid reaction generation hydrogen sulfide gas, passed into by the gas of generation and generate Manganese monosulfide. precipitation in manganese salt solution, then filtration, washing, drying obtain Manganese monosulfide. pressed powder;
(2) a kind of polynary organic monoacid is proportionally added in a kind of polyhydric alcohol and forms mixed solution;
(3) by lithium salts, manganese salt and additive are dissolved in above-mentioned mixed solution according to a certain percentage, polynary organic monoacid forms chelate with lithium ion and manganese ion, whole system is uniform solution, now Manganese monosulfide. pressed powder is scattered in solution, and stir, after ultrasonic disperse, heated solution at 60 90 DEG C of temperature, this chelate and polyhydric alcohol generation esterification, solution becomes colloidal sol, continue to add thermosol and remove unnecessary alcohol to obtain gel, add further and be thermally generated xerogel, by xerogel in Muffle furnace at 400 DEG C isothermal holding 3 10 hours, grind tabletting after being cooled to room temperature and obtain presoma;
(4) it is placed in stove at 750 DEG C of temperature by the presoma obtained in step (3) heat treatment 3-15 hour, is cooled to 600 DEG C subsequently and is incubated 3-10 hour, be subsequently cooled to room temperature, pulverize and obtain described manganate cathode material for lithium.
Described manganese salt be manganese sulfate, manganese chloride, manganese nitrate, manganese acetate one or more.
Described polynary organic monoacid be citric acid, oxalic acid, tartaric acid, benzoic acid, salicylic one or more.
Described polyhydric alcohol is ethylene glycol, 1,2 propylene glycol, Isosorbide-5-Nitrae fourth two. alcohol, hexanediol, neopentyl glycol, Diethylene Glycol, dipropylene glycol, trimethylolpropane, glycerol one or more.
Principles of the invention is: lithium manganate having spinel structure positive electrode in charge and discharge process, Li+Spinel structure reversibly embeds, and in 0≤x≤1 and 1≤x≤2 scope, forms two discharge platforms of 3V and 4V respectively, at 4V district Li+Entering the tetrahedron 8a position of spinel structure, in charge and discharge process, capacity attenuation is slower.But at 3V district, Li+Entering the octahedra 16c position in spinel structure, cause strong Jahn Teller to distort, capacity is decayed rapidly.Therefore lithium manganate having spinel structure positive electrode is generally limited to the operated within range of about 4V, and its theoretical capacity also only has 148mAh/g.If lithium manganate having spinel structure positive electrode can overcome the Jahn Teller in 3V district to distort, enable the material to use in two regions of 3V and 4V, then the theoretical capacity of this material nearly doubles.Theoretical Calculation adopts anion doped lithium manganate having spinel structure positive electrode can suppress Jahn Teller effect with experiments show that.
The present invention has an advantage that
(1) element sulphur mix the Jahn Teller effect inhibiting material in 3V district, reduce material dissolving in the electrolyte simultaneously.
(2) element sulphur coordinates other cationic doping, makes the lithium manganate material can at bigger charge and discharge voltage operated within range, and the capacity of material is greatly improved, and the cycle performance of material have also been obtained and greatly improves simultaneously.
(3) preparation method of material is simple, it is easy to operation and control, is suitable for industrialized production.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of present invention manganate cathode material for lithium obtained by embodiment 1.
Fig. 2 is the XRD figure of present invention manganate cathode material for lithium obtained by embodiment 1.
Fig. 3 is the charging and discharging curve figure of present invention manganate cathode material for lithium obtained by embodiment 1.
Detailed description of the invention
Be will assist in by following embodiment and accompanying drawing and understand the present invention, but be not intended to present disclosure.
Embodiment 1
A kind of lithium manganate material is Li1.2Al0.1Mn1.9O3.96S0.04, its preparation method is as follows:
(1) adopting kipp gas generator by dilute sulfuric acid and Iron sulfuret. hybrid reaction generation hydrogen sulfide gas, passed into by the gas of generation and generate Manganese monosulfide. precipitation in manganese acetate solution, then filtration, washing, drying obtain Manganese monosulfide. pressed powder, standby;
(2) by Li:Al: Mn: S molar ratio is standby for weighing a certain amount of lithium nitrate, aluminum nitrate, manganese acetate, Manganese monosulfide. by 1.2:0.1: 1.9: 0.04;
(3) weigh citric acid in proportion and hexanediol is configured to mixed solution;
(4) lithium nitrate weighed in step (2), aluminum nitrate and manganese acetate are dissolved in deionized water respectively, add after mix homogeneously in the mixed solution of step (3);This mixed solution is heated under continuous strong stirring, and Manganese monosulfide. powder load weighted in step (2) is diffused slowly in this mixed solution, being incubated a period of time when temperature is increased to 80 DEG C, until mixed liquor becomes gel, further heat drying becomes xerogel;
(5) xerogel is transferred to 400 DEG C of heat treatments of constant temperature 3 hours in Muffle furnace, it is cooled to room temperature with furnace temperature, 750 DEG C of heat treatments of constant temperature 10 hours in Muffle furnace are placed into after grinding tabletting, it is cooled to 600 DEG C of heat treatments subsequently 8 hours, pulverizes after naturally cooling to room temperature and namely obtain described manganate cathode material for lithium.
Embodiment 2
A kind of lithium manganate material is Li1.2Co0.1Mn1.9O3.98S0.02, its preparation method is as follows:
(1) a certain amount of sodium sulfide and manganese acetate are weighed in proportion, respectively sodium sulfide and manganese acetate are configured to aqueous solution, being instilled lentamente by manganese acetate solution and generate Manganese monosulfide. precipitation in sodium sulfide solution, then filtration, washing, drying obtain Manganese monosulfide. pressed powder, standby;
(2) by Li:Co: Mn: S molar ratio is standby for weighing a certain amount of lithium nitrate, cobalt acetate, manganese acetate, Manganese monosulfide. by 1.2:0.1: 1.9: 0.02;
(3) weigh citric acid in proportion and hexanediol is configured to mixed solution;
(4) lithium nitrate weighed in step (2), aluminum nitrate and manganese acetate are dissolved in deionized water respectively, add after mix homogeneously in the mixed solution of step (3);This mixed solution is heated under continuous strong stirring, and Manganese monosulfide. powder load weighted in step (2) is diffused slowly in this mixed solution, being incubated a period of time when temperature is increased to 80 DEG C, until mixed liquor becomes gel, further heat drying becomes xerogel;
(5) xerogel is transferred to 400 DEG C of heat treatments of constant temperature 3 hours in Muffle furnace, it is cooled to room temperature with furnace temperature, 750 DEG C of heat treatments of constant temperature 10 hours in Muffle furnace are placed into after grinding tabletting, it is cooled to 600 DEG C of heat treatments subsequently 8 hours, pulverizes after naturally cooling to room temperature and namely obtain described manganate cathode material for lithium.
Embodiment 3
A kind of lithium manganate material is Li1.2Cr0.1Mn1.9O3.97S0.03, its preparation method is as follows:
(1) adopting kipp gas generator principle by dilute sulfuric acid and Iron sulfuret. hybrid reaction generation hydrogen sulfide gas, passed into by the gas of generation and generate Manganese monosulfide. precipitation in manganese acetate solution, then filtration, washing, drying obtain Manganese monosulfide. pressed powder, standby;
(2) by Li:Cr: Mn: S molar ratio is standby for weighing a certain amount of lithium nitrate, chromic nitrate, manganese acetate, Manganese monosulfide. by 1.2:0.1: 1.9: 0.03;
(3) weigh citric acid in proportion and hexanediol is configured to mixed solution;
(4) lithium nitrate weighed in step (2), aluminum nitrate and manganese acetate are dissolved in deionized water respectively, add after mix homogeneously in the mixed solution of step (3);This mixed solution is heated under continuous strong stirring, and Manganese monosulfide. powder load weighted in step (2) is diffused slowly in this mixed solution, being incubated a period of time when temperature is increased to 80 DEG C, until mixed liquor becomes gel, further heat drying becomes xerogel;
(5) xerogel is transferred to 400 DEG C of heat treatments of constant temperature 3 hours in Muffle furnace, it is cooled to room temperature with furnace temperature, 750 DEG C of heat treatments of constant temperature 10 hours in Muffle furnace are placed into after grinding tabletting, it is cooled to 600 DEG C of heat treatments subsequently 8 hours, pulverizes after naturally cooling to room temperature and namely obtain described manganate cathode material for lithium.
Claims (6)
1. a manganate cathode material for lithium, it is characterised in that the formula of described manganate cathode material for lithium is Li1.2MxMn2-xO4-ySy, wherein 0 > x >=0.2,0 > y >=0.2.
2. manganate cathode material for lithium according to claim 1, it is characterised in that described doped chemical M is one or more in Li, Na, K, Mg, Ca, Sr, Ba, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ag, Ce, Sm, Eu, Al, Si, In, Ga, Ge, Sn, Pb, B, Sb, Bi, Se, Te.
3. the method for manganate cathode material for lithium described in preparation claim 1, it is characterised in that it comprises the steps:
(1) adopting kipp gas generator principle by dilute sulfuric acid and Iron sulfuret. hybrid reaction generation hydrogen sulfide gas, passed into by the gas of generation and generate Manganese monosulfide. precipitation in manganese salt solution, then filtration, washing, drying obtain Manganese monosulfide. pressed powder;
(2) a kind of polynary organic monoacid is proportionally added in a kind of polyhydric alcohol and forms mixed solution;
(3) by lithium salts, manganese salt and additive are dissolved in above-mentioned mixed solution according to a certain percentage, polynary organic monoacid forms chelate with lithium ion and manganese ion etc., whole system is uniform solution, now Manganese monosulfide. pressed powder is scattered in solution, and stir, after ultrasonic disperse, heated solution at 60 90 DEG C of temperature, this chelate and polyhydric alcohol generation esterification, solution becomes colloidal sol, continue to add thermosol and remove unnecessary alcohol to obtain gel, add further and be thermally generated xerogel, by xerogel in Muffle furnace at 400 DEG C isothermal holding 3 10 hours, grind tabletting after being cooled to room temperature and obtain presoma;
(4) it is placed in stove at 750 DEG C of temperature by the presoma obtained in step (3) heat treatment 3-15 hour, is cooled to 600 DEG C subsequently and is incubated 3-10 hour, be subsequently cooled to room temperature, pulverize and obtain described manganate cathode material for lithium.
4. the preparation method of manganate cathode material for lithium according to claim 3, it is characterised in that: described manganese salt be manganese sulfate, manganese chloride, manganese nitrate, manganese acetate one or more.
5. the preparation method of manganate cathode material for lithium according to claim 3, it is characterised in that: described polynary organic monoacid be citric acid, oxalic acid, tartaric acid, benzoic acid, salicylic one or more.
6. the preparation method of manganate cathode material for lithium according to claim 3, it is characterized in that: described polyhydric alcohol be ethylene glycol, 1,2 one propylene glycol, Isosorbide-5-Nitrae fourth two. alcohol, hexanediol, neopentyl glycol, Diethylene Glycol, dipropylene glycol, trimethylolpropane, glycerol one or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410774626.8A CN105789568B (en) | 2014-12-16 | 2014-12-16 | A kind of doping element sulphur richness lithium lithium manganate material and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410774626.8A CN105789568B (en) | 2014-12-16 | 2014-12-16 | A kind of doping element sulphur richness lithium lithium manganate material and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105789568A true CN105789568A (en) | 2016-07-20 |
CN105789568B CN105789568B (en) | 2019-05-07 |
Family
ID=56373913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410774626.8A Active CN105789568B (en) | 2014-12-16 | 2014-12-16 | A kind of doping element sulphur richness lithium lithium manganate material and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105789568B (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107994220A (en) * | 2017-11-28 | 2018-05-04 | 广东工业大学 | LiMn2O4 composite material, its preparation method and the lithium ion battery that a kind of molybdenum doping is modified |
CN108400320A (en) * | 2018-03-05 | 2018-08-14 | 福建师范大学 | A method of in spinel nickel manganate cathode material for lithium surface sulfide |
CN108736002A (en) * | 2018-05-30 | 2018-11-02 | 天津巴莫科技股份有限公司 | A kind of part carbon coating type richness lithium solid solution oxysulfide positive electrode and preparation method thereof |
WO2019041057A1 (en) | 2017-09-01 | 2019-03-07 | Universidad De Antofagasta | Manganese spinel doped with magnesium, cathode material comprising same, method for preparing same and lithium ion battery comprising same |
CN109616658A (en) * | 2018-12-17 | 2019-04-12 | 中科廊坊过程工程研究院 | A kind of selenium, the nickelic positive electrode of sulfate radical codope and its preparation method and application |
CN110970615A (en) * | 2019-06-11 | 2020-04-07 | 青岛红星新能源技术有限公司 | Modification method of high-performance lithium manganate positive electrode material |
CN112542582A (en) * | 2020-12-09 | 2021-03-23 | 四川虹微技术有限公司 | Multi-element modified lithium-rich manganese-based positive electrode material and preparation method thereof |
CN113140727A (en) * | 2020-01-17 | 2021-07-20 | 中国科学院物理研究所 | Lithium-activated copper-iron-manganese-based layered oxide material, preparation method and application |
CN114790569A (en) * | 2022-04-22 | 2022-07-26 | 福建师范大学 | Method for preparing Se-doped two-dimensional vanadium-based single crystal superconducting material |
CN114864914A (en) * | 2022-06-15 | 2022-08-05 | 郴州杉杉新材料有限公司 | Lithium niobate-coated high-nickel ternary positive electrode material, preparation method, battery and application |
CN116395760A (en) * | 2023-06-09 | 2023-07-07 | 苏州精控能源科技有限公司 | Multielement doped high-performance positive electrode material and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102054985A (en) * | 2009-10-27 | 2011-05-11 | 北京当升材料科技股份有限公司 | Lithium manganese oxide material and preparation method thereof |
EP2333878A1 (en) * | 2008-10-01 | 2011-06-15 | Toda Kogyo Corporation | Lithium manganate powder for nonaqueous electrolyte secondary battery, method for producing same, and nonaqueous electrolyte secondary battery |
CN102244257A (en) * | 2011-06-15 | 2011-11-16 | 清华大学深圳研究生院 | High-temperature manganic acid lithium cathode material and preparation method thereof |
CN102800840A (en) * | 2011-05-23 | 2012-11-28 | 中国科学院宁波材料技术与工程研究所 | Cathode material of lithium ion battery, and preparation method thereof and lithium ion battery |
CN103022467A (en) * | 2011-09-28 | 2013-04-03 | 北京当升材料科技股份有限公司 | Lithium manganate material for surface treatment and preparation method thereof |
-
2014
- 2014-12-16 CN CN201410774626.8A patent/CN105789568B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2333878A1 (en) * | 2008-10-01 | 2011-06-15 | Toda Kogyo Corporation | Lithium manganate powder for nonaqueous electrolyte secondary battery, method for producing same, and nonaqueous electrolyte secondary battery |
CN102054985A (en) * | 2009-10-27 | 2011-05-11 | 北京当升材料科技股份有限公司 | Lithium manganese oxide material and preparation method thereof |
CN102800840A (en) * | 2011-05-23 | 2012-11-28 | 中国科学院宁波材料技术与工程研究所 | Cathode material of lithium ion battery, and preparation method thereof and lithium ion battery |
CN102244257A (en) * | 2011-06-15 | 2011-11-16 | 清华大学深圳研究生院 | High-temperature manganic acid lithium cathode material and preparation method thereof |
CN103022467A (en) * | 2011-09-28 | 2013-04-03 | 北京当升材料科技股份有限公司 | Lithium manganate material for surface treatment and preparation method thereof |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019041057A1 (en) | 2017-09-01 | 2019-03-07 | Universidad De Antofagasta | Manganese spinel doped with magnesium, cathode material comprising same, method for preparing same and lithium ion battery comprising same |
CN111418094A (en) * | 2017-09-01 | 2020-07-14 | 安托法加斯塔大学 | Manganese spinel doped with magnesium, cathode material comprising same, method for preparing same and lithium ion battery comprising such spinel |
CN107994220A (en) * | 2017-11-28 | 2018-05-04 | 广东工业大学 | LiMn2O4 composite material, its preparation method and the lithium ion battery that a kind of molybdenum doping is modified |
CN108400320A (en) * | 2018-03-05 | 2018-08-14 | 福建师范大学 | A method of in spinel nickel manganate cathode material for lithium surface sulfide |
CN108400320B (en) * | 2018-03-05 | 2020-07-10 | 福建师范大学 | Method for vulcanizing surface of spinel lithium nickel manganese oxide positive electrode material |
CN108736002A (en) * | 2018-05-30 | 2018-11-02 | 天津巴莫科技股份有限公司 | A kind of part carbon coating type richness lithium solid solution oxysulfide positive electrode and preparation method thereof |
CN108736002B (en) * | 2018-05-30 | 2021-05-28 | 天津巴莫科技股份有限公司 | Local carbon-coated lithium-rich solid solution oxysulfide anode material and preparation method thereof |
CN109616658A (en) * | 2018-12-17 | 2019-04-12 | 中科廊坊过程工程研究院 | A kind of selenium, the nickelic positive electrode of sulfate radical codope and its preparation method and application |
CN109616658B (en) * | 2018-12-17 | 2021-10-19 | 中科廊坊过程工程研究院 | Selenium and sulfate radical co-doped high-nickel cathode material and preparation method and application thereof |
CN110970615A (en) * | 2019-06-11 | 2020-04-07 | 青岛红星新能源技术有限公司 | Modification method of high-performance lithium manganate positive electrode material |
CN113140727A (en) * | 2020-01-17 | 2021-07-20 | 中国科学院物理研究所 | Lithium-activated copper-iron-manganese-based layered oxide material, preparation method and application |
CN113140727B (en) * | 2020-01-17 | 2022-09-16 | 中国科学院物理研究所 | Lithium-activated copper-iron-manganese-based layered oxide material, preparation method and application |
CN112542582B (en) * | 2020-12-09 | 2021-09-28 | 四川虹微技术有限公司 | Multi-element modified lithium-rich manganese-based positive electrode material and preparation method thereof |
CN112542582A (en) * | 2020-12-09 | 2021-03-23 | 四川虹微技术有限公司 | Multi-element modified lithium-rich manganese-based positive electrode material and preparation method thereof |
CN114790569A (en) * | 2022-04-22 | 2022-07-26 | 福建师范大学 | Method for preparing Se-doped two-dimensional vanadium-based single crystal superconducting material |
CN114790569B (en) * | 2022-04-22 | 2023-07-07 | 福建师范大学 | Method for preparing Se-doped two-dimensional vanadium-based monocrystal superconducting material |
CN114864914A (en) * | 2022-06-15 | 2022-08-05 | 郴州杉杉新材料有限公司 | Lithium niobate-coated high-nickel ternary positive electrode material, preparation method, battery and application |
CN114864914B (en) * | 2022-06-15 | 2023-10-27 | 郴州杉杉新材料有限公司 | Lithium niobate coated high-nickel ternary positive electrode material, preparation method, battery and application |
CN116395760A (en) * | 2023-06-09 | 2023-07-07 | 苏州精控能源科技有限公司 | Multielement doped high-performance positive electrode material and preparation method thereof |
CN116395760B (en) * | 2023-06-09 | 2023-08-15 | 苏州精控能源科技有限公司 | Multielement doped high-performance positive electrode material and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN105789568B (en) | 2019-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105789568B (en) | A kind of doping element sulphur richness lithium lithium manganate material and preparation method thereof | |
Croy et al. | Li2MnO3-based composite cathodes for lithium batteries: A novel synthesis approach and new structures | |
Liu et al. | Comparison of structure and electrochemistry of Al-and Fe-doped LiNi1/3Co1/3Mn1/3O2 | |
Du et al. | Fluorine-doped LiNi0. 5Mn1. 5O4 for 5 V cathode materials of lithium-ion battery | |
CN102983326B (en) | Spherical lithium-nickel-cobalt composite oxide positive electrode material preparation method | |
Yang et al. | Understanding voltage decay in lithium-rich manganese-based layered cathode materials by limiting cutoff voltage | |
CN103606663B (en) | A kind of Multiplying-power lithium-rich composite anode material and preparation method thereof | |
CN101997113A (en) | Multicomponent material with multilayer coating structure for lithium ion battery and preparation method thereof | |
CN102201573A (en) | Rich-lithium positive electrode material of lithium ion battery having coreshell structure and preparation method of rich-lithium positive electrode material | |
CN105024067B (en) | Lithium ion battery, composite doped modified positive active material thereof and preparation method | |
CN102255083B (en) | Layered manganese-based composite material for power-type lithium ion battery and preparation method thereof | |
CN103887483A (en) | Doped and modified ternary positive electrode material and preparation method thereof | |
CN105789581A (en) | Production method for high-capacity long-cycle lithium-rich type-622 ternary positive electrode material | |
CN104218241B (en) | Lithium ion battery anode lithium-rich material modification method | |
CN102751481A (en) | Li2MnO3 and LiCoO2 composite anode material | |
CN105895903A (en) | Synthesis of modified lithium-rich layered positive electrode material doped with anions of F<->, Cl<-> and Br<-> | |
CN104979549A (en) | Sheet lithium-enriched manganese-based anode material for lithium-ion battery as well as preparation method and application of sheet lithium-enriched manganese-based anode material | |
CN103715422B (en) | Electrolysis prepares the method for the nickelic system positive electrode of lithium ion battery | |
CN105753072B (en) | A kind of nickel ion doped, preparation method and the usage | |
CN103746113A (en) | Preparation method of coated spinel lithium manganate composite cathode material | |
CN103367733A (en) | Lithium ion battery cathode material and preparation method thereof and lithium ion battery | |
CN102315437B (en) | High specific capacity lithium-rich composite anode material of power lithium ion battery and synthetic method thereof | |
CN104466165A (en) | Modified lithium manganate positive pole material and preparation method | |
Xian et al. | P3-type layered Na0. 26Co1− xMnxO2 cathode induced by Mn doping for high-performance sodium-ion batteries | |
CN108539159A (en) | The preparation method of multielement codope LiMn2O4 composite material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |