CN106025213A - Method for improving electrochemical and dynamic properties of La-Mg-Ni-based alloy electrode - Google Patents

Method for improving electrochemical and dynamic properties of La-Mg-Ni-based alloy electrode Download PDF

Info

Publication number
CN106025213A
CN106025213A CN201610403149.3A CN201610403149A CN106025213A CN 106025213 A CN106025213 A CN 106025213A CN 201610403149 A CN201610403149 A CN 201610403149A CN 106025213 A CN106025213 A CN 106025213A
Authority
CN
China
Prior art keywords
graphene
electrode
alloy
gained
ball milling
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
Application number
CN201610403149.3A
Other languages
Chinese (zh)
Other versions
CN106025213B (en
Inventor
蓝志强
郭进
魏冰
周文政
韦文楼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi University
Original Assignee
Guangxi University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi University filed Critical Guangxi University
Priority to CN201610403149.3A priority Critical patent/CN106025213B/en
Publication of CN106025213A publication Critical patent/CN106025213A/en
Application granted granted Critical
Publication of CN106025213B publication Critical patent/CN106025213B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/383—Hydrogen absorbing alloys
    • H01M4/385—Hydrogen absorbing alloys of the type LaNi5
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/24—Alkaline accumulators
    • H01M10/30—Nickel accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/364—Composites as mixtures
    • 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

Abstract

The invention discloses a method for improving the electrochemical and dynamic properties of an La-Mg-Ni-based alloy electrode. The method comprises the steps of: smelting raw materials of La, Mg, Ni and Co into a cast alloy; crushing the cast alloy; and adding graphene and a graphene/nickel compound for mixing and ball-milling to prepare an La-Mg-Ni/graphene and La-Mg-Ni/graphene compound Ni-MH battery material. The method has the advantages that the electrochemical and dynamic properties of the material are obviously improved after the graphene and the graphene/nickel compound are added to La-Mg-Ni alloy powder for mixing and ball-milling; and a solid foundation is laid for later research of the Ni-MH battery material.

Description

A kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance
Technical field
The invention belongs to new battery material technical field, specifically a kind of raising La-Mg-Ni base alloy electrode electrochemical kinetics The method learning performance, the method is prepared a kind of has La-Mg-Ni base alloy electrode Ni-MH easily-activated, that dynamic performance is good Battery material.
Background technology:
Ni-MH battery receives much concern due to advantages such as electrochemistry capacitance are high and environment compatibility is good, but how to improve Ni- MH battery charge and discharge efficiency and offer charge-discharge performance still suffer from many problems.Use element substitution, surface burden, at heat The methods such as science and engineering skill are one of current Main Means to Ni-MH battery material study on the modification, but these methods yet suffer from not Few drawback.As some method can improve material cyclical stability, but the electrochemical kinetics performance of material can be caused Declining, some method can improve electrochemical kinetics performance, but cyclical stability can be caused to decline.The two can not hold concurrently simultaneously Turning round and look at, the development causing Ni-MH battery is limited.While improving Ni-MH circulating battery stability, moreover it is possible to ensure Ni-MH electricity The efficiency for charge-discharge in pond, exploring new preparation technology becomes and improves one of Ni-MH battery electrochemical combination property main path.Closely Nian Lai, the development of Graphene provides a kind of new approaches in preparation Ni-MH battery material method to us.Because Graphene is special The structures shape character of its uniqueness, at room temperature has more than 15000cm such as Graphene2·V-1·s-1Carrier mobility Rate, and this mobility is not influenced by temperature, to be still currently known room temperature resistivity in material minimum for Graphene simultaneously Material, and also with prominent electronic property.To this end, at the graphene-doped or graphene-supported catalyst of Ni-MH battery, It is expected to solve Ni-MH battery electrochemical combination property and declines problem.
Summary of the invention
It is an object of the invention to provide a kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance.
The technical scheme is that
The preparation process of a kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance is as follows:
Prepared by 1.La-Mg-Ni base alloy
Under argon shield, configure sample, all raw material by the mol ratio of La:Mg:Ni:Co=7:3:29.75:5.25 Being bulk sample, wherein Mg is with intermediate alloy MgNi2Replace, simultaneously for reducing fusion process due to the Mg unit of volatilization loss Element, adds the MgNi that mass fraction is 20%2, deduct MgNi2After Ni in alloy, add simple substance Ni to ensure to meet proportioning Requirement, then uses magnetic suspension induction melting that material is carried out melting, and in order to ensure that melting is uniform, it is molten that alloy pig repeats upset Refine three times, after then alloy part being crushed 250 mesh sieves, then divide equally three parts.
The preparation of 2.La-Mg-Ni base alloy electrode material
A copy of it alloy powder that step 1 crosses 250 mesh sieve gained is inserted in ball grinder, then under argon shield, Utilizing planetary ball mill direct ball milling 10min, during ball milling, ratio of grinding media to material is 20:1, and rotating speed is 250 revs/min, then will prepare gained Sample and carbonyl nickel powder configure for 1:4 in mass ratio, are uniformly pressed into a diameter of 10mm, thickness under 20MPa pressure after mixing For the circular electric pole piece of 1mm, finally using the electrode slice preparing gained as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, Ni (OH) with sintering2/ NiOOH electrode is positive pole, carries out with Hg/HgO for reference electrode in open type three-electrode method system Every electrochemical property test.
Prepared by 3.La-Mg-Ni/ Graphene alloy electrode material
Just a copy of it alloy powder of step 1 250 mesh sieve gained excessively is inserted in ball grinder, is simultaneously introduced mass fraction Being the Graphene of 2%, then under argon shield, utilize planetary ball mill direct mechanical ball milling 10min, during ball milling, ratio of grinding media to material is 20:1, rotating speed is 250 revs/min, then will prepare gained sample and configure for 1:4 in mass ratio with carbonyl nickel powder, uniformly after mixing Being pressed into a diameter of 10mm under 20MPa pressure, thickness is the circular electric pole piece of 1mm, finally the electrode slice preparing gained is made For negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/ NiOOH electrode is positive pole, with Hg/HgO is Reference electrode carries out every electrochemical property test in open type three-electrode method system.
Prepared by 4.La-Mg-Ni/ (Graphene/complex) alloy electrode material
First the graphite oxide of 100mg is dispersed in sonic oscillation 1h in the ethylene glycol solution of 50ml, forms stable stone Ink alkene colloid；It is subsequently adding the NiSO that concentration is 1mol/L4·6H2O solution 25ml and concentration are the NaOH solution of 5mol/L 25ml, then magnetic stirring 30min, obtains graphene/nickel float.Then by centrifuge separating suspension, deionized water is used Clean separator, then dry 60 DEG C of temperature；Subsequently the mixture mixing in argon/hydrogen=95/5 flowing drying gained Under atmosphere, being raised to 750 DEG C with the heating rate of 5 DEG C/min from room temperature, then furnace cooling after insulation 3h, prepares graphite Alkene/nickel composite.Then a copy of it alloy powder crossing 250 mesh sieve gained is inserted in ball grinder, be simultaneously introduced quality and divide Number is the graphene/nickel complex of 2%, then under argon shield, utilizes planetary ball mill direct mechanical ball milling 10min, ball During mill, ratio of grinding media to material is 20:1, and rotating speed is 250 revs/min, then joins preparing gained sample for 1:4 in mass ratio with carbonyl nickel powder Putting, be uniformly pressed into a diameter of 10mm under 20MPa pressure after mixing, thickness is the circular electric pole piece of 1mm；Finally preparation institute Electrode slice as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/ NiOOH electrode is just Pole, carries out every electrochemical property test in open type three-electrode method system.
Above-mentioned La-Mg-Ni/ Graphene, La-Mg-Ni/ (graphene/nickel complex) are prepared as Ni-MH battery, mainly It is applied in Ni-MH battery system.
Advantages of the present invention: after adding Graphene, graphene/nickel complex, is ensureing material charge/discharge capacity and is following In the case of ring stability is constant, greatly reduce the electrochemical impedance of La-Mg-Ni base alloy electrode, improve the electrification of material Learning dynamic performance, solid foundation is established in the research for later Ni-MH battery material.
Accompanying drawing explanation
Fig. 1 La0.7Mg0.3(Ni0.85Co0.15)3.5The charge and discharge cycles curve of alloy electrode.
Fig. 2 La0.7Mg0.3(Ni0.85Co0.15)3.5The high-rate discharge ability curve of alloy electrode.
Fig. 3 La0.7Mg0.3(Ni0.85Co0.15)3.5The electrochemical impedance spectroscopy of alloy.
In Fig. 1～Fig. 3, what as-cast was corresponding is the alloy electrode of direct ball milling；What Gp was corresponding is add after Graphene with Alloy powder mixing and ball milling prepares the alloy electrode of gained；Gp/Ni correspondence is to add graphene/nickel complex to mix with alloy powder Close ball milling and prepare the alloy electrode of gained.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
A kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance, preparation process is as follows:
Prepared by 1.La-Mg-Ni base alloy
Under argon shield, configure sample, all raw material by the mol ratio of La:Mg:Ni:Co=7:3:29.75:5.25 Being bulk sample, wherein Mg is with intermediate alloy MgNi2Replace, simultaneously for reducing fusion process due to the Mg unit of volatilization loss Element, adds the MgNi that mass fraction is 20%2, deduct MgNi2After Ni in alloy, add simple substance Ni to ensure to meet proportioning Requirement, then uses magnetic suspension induction melting that material is carried out melting.In order to ensure that melting is uniform, it is molten that alloy pig repeats upset Refine three times.Then after alloy part being crushed 250 mesh sieves, then three parts are divided equally.
The preparation of 2.La-Mg-Ni base alloy electrode material
A copy of it alloy powder of above-mentioned mistake 250 mesh sieve gained is inserted in ball grinder, then under argon shield, profit With planetary ball mill direct ball milling 10min, during ball milling, ratio of grinding media to material is 20:1, and rotating speed is 250 revs/min, then will prepare gained sample Product and carbonyl nickel powder configure for 1:4 in mass ratio, are uniformly pressed into a diameter of 10mm under 20MPa pressure after mixing, and thickness is The circular electric pole piece of 1mm.Finally using the electrode slice preparing gained as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with The Ni (OH) of sintering2/ NiOOH electrode is positive pole, carries out respectively with Hg/HgO for reference electrode in open type three-electrode method system Item electrochemical property test.
Embodiment 2
A kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance, preparation process is as follows:
Prepared by 1.La-Mg-Ni base alloy:
Under argon shield, configure sample, all raw material by the mol ratio of La:Mg:Ni:Co=7:3:29.75:5.25 Being bulk sample, wherein Mg is with intermediate alloy MgNi2Replace, simultaneously for reducing fusion process due to the Mg unit of volatilization loss Element, adds the MgNi that mass fraction is 20%2, deduct MgNi2After Ni in alloy, add simple substance Ni to ensure to meet proportioning Requirement, then uses magnetic suspension induction melting that material is carried out melting.In order to ensure that melting is uniform, it is molten that alloy pig repeats upset Refine three times.Then after alloy part being crushed 250 mesh sieves, then three parts are divided equally.
Prepared by 2.La-Mg-Ni/ Graphene alloy electrode material:
Inserting in ball grinder by a copy of it alloy powder crossing 250 mesh sieve gained, being simultaneously introduced mass fraction is 2% Graphene, then under argon shield, utilizes planetary ball mill direct mechanical ball milling 10min, and during ball milling, ratio of grinding media to material is 20:1, turns Speed is 250 revs/min, then will prepare gained sample and configure for 1:4 in mass ratio with carbonyl nickel powder, uniformly at 20MPa after mixing Being pressed into a diameter of 10mm under pressure, thickness is the circular electric pole piece of 1mm.Finally using the electrode slice preparing gained as negative pole, With the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/ NiOOH electrode is positive pole, with Hg/HgO for reference electricity Pole carries out every electrochemical property test in open type three-electrode method system.
Embodiment 3
A kind of method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance, preparation process is as follows:
Prepared by 1.La-Mg-Ni base alloy:
Under argon shield, configure sample, all raw material by the mol ratio of La:Mg:Ni:Co=7:3:29.75:5.25 Being bulk sample, wherein Mg is with intermediate alloy MgNi2Replace, simultaneously for reducing fusion process due to the Mg unit of volatilization loss Element, adds the MgNi that mass fraction is 20%2, deduct MgNi2After Ni in alloy, add simple substance Ni to ensure to meet proportioning Requirement, then uses magnetic suspension induction melting that material is carried out melting.In order to ensure that melting is uniform, it is molten that alloy pig repeats upset Refine three times.Then after alloy part being crushed 250 mesh sieves, then three parts are divided equally.
The step of 2.La-Mg-Ni/ (Graphene/complex) alloy electrode material preparation method is as follows:
First the graphite oxide of 100mg is dispersed in sonic oscillation 1h in the ethylene glycol solution of 50ml, forms stable stone Ink alkene colloid.It is subsequently adding the NiSO that concentration is 1mol/L4·6H2O solution 25ml and concentration are the NaOH solution of 5mol/L 25ml, then magnetic stirring 30min, obtains graphene/nickel float.Then by centrifuge separating suspension, deionized water is used Clean separator, then dry 60 DEG C of temperature.Subsequently the mixture mixed gas (argon/hydrogen in flowing drying gained =95/5) under atmosphere, being raised to 750 DEG C with the heating rate of 5 DEG C/min from room temperature, then furnace cooling after insulation 3h, prepares Graphene/nickel complex.Then a copy of it alloy powder crossing 250 mesh sieve gained is inserted in ball grinder, be simultaneously introduced matter Amount mark is the graphene/nickel complex of 2%, then under argon shield, utilizes planetary ball mill direct mechanical ball milling 10min, during ball milling, ratio of grinding media to material is 20:1, and rotating speed is 250 revs/min, then will prepare gained sample with carbonyl nickel powder in mass ratio Configuring for 1:4, be uniformly pressed into a diameter of 10mm under 20MPa pressure after mixing, thickness is the circular electric pole piece of 1mm.Finally Using the electrode slice preparing gained as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/NiOOH Electrode is positive pole, carries out every electrochemical property test in open type three-electrode method system.
As shown in Figures 1 to 3, all alloys only need to i.e. can reach maximum by capacity after 1-2 charge and discharge cycles, display Go out good activity function.Add after Graphene, graphene/nickel complex, the maximum discharge capacity of alloy electrode from 350mAh/g has increased respectively to 367.7mAh/g and 367.7mAh/g, after 80 discharge and recharges follow badly, and the appearance of alloy electrode Amount conservation rate S80It is respectively 64.8%, 66.4% and 67.3%.The maximum discharge capacity of alloy electrode and stable circulation are not There is decline, after adding Graphene, graphene/nickel complex, have certain lifting on the contrary, and at discharge current density be 1200mA·g-1Time, the high-rate discharge ability HRD of alloy electrode1200Before Graphene, graphene/nickel complex add 66.2% increases respectively to 75.8% and 86.4%, and dynamic performance is significantly improved.Especially adding Graphene, graphite After alkene/nickel composite, mass transfer resistance is obviously reduced, and significantly provides the efficiency for charge-discharge of La-Mg-Ni base alloy electrode.

Claims (2)

1. the method improving La-Mg-Ni base alloy electrode electrochemical kinetics performance, it is characterised in that preparation process is such as Under:
1) prepared by La-Mg-Ni base alloy
Under argon shield, configuring sample by the mol ratio of La:Mg:Ni:Co=7:3:29.75:5.25, all raw material is Bulk sample, wherein Mg is with intermediate alloy MgNi2Replace, simultaneously for minimizing fusion process due to the Mg element of volatilization loss, many Add the MgNi that mass fraction is 20%2, deduct MgNi2After Ni in alloy, add simple substance Ni and meet ratio requirement with guarantee, Then using magnetic suspension induction melting that material is carried out melting, in order to ensure that melting is uniform, alloy pig repeats to overturn melting three Secondary, after then alloy part being crushed 250 mesh sieves, then divide equally three parts；
2) preparation of La-Mg-Ni base alloy electrode material
By step 1) cross 250 mesh sieve gained a copy of it alloy powder insert in ball grinder, then under argon shield, utilize Planetary ball mill direct ball milling 10min, during ball milling, ratio of grinding media to material is 20:1, and rotating speed is 250 revs/min, then will prepare gained sample Configuring for 1:4 in mass ratio with carbonyl nickel powder, be uniformly pressed into a diameter of 10mm under 20MPa pressure after mixing, thickness is 1mm Circular electric pole piece, finally using the electrode slice preparing gained as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, to burn The Ni (OH) of knot2/ NiOOH electrode is positive pole, carries out every with Hg/HgO for reference electrode in open type three-electrode method system Electrochemical property test；
3) prepared by La-Mg-Ni/ Graphene alloy electrode material
Just step 1) cross 250 mesh sieve gained a copy of it alloy powder insert in ball grinder, being simultaneously introduced mass fraction is The Graphene of 2%, then under argon shield, utilizes planetary ball mill direct mechanical ball milling 10min, and during ball milling, ratio of grinding media to material is 20:1, rotating speed is 250 revs/min, then will prepare gained sample and configure for 1:4 in mass ratio with carbonyl nickel powder, uniformly after mixing Being pressed into a diameter of 10mm under 20MPa pressure, thickness is the circular electric pole piece of 1mm, finally the electrode slice preparing gained is made For negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/ NiOOH electrode is positive pole, with Hg/HgO is Reference electrode carries out every electrochemical property test in open type three-electrode method system；
4) prepared by La-Mg-Ni/ (Graphene/complex) alloy electrode material
First the graphite oxide of 100mg is dispersed in sonic oscillation 1h in the ethylene glycol solution of 50ml, forms stable Graphene Colloid；It is subsequently adding the NiSO that concentration is 1mol/L4·6H2O solution 25ml and concentration are NaOH solution 25ml of 5mol/L, connect Magnetic stirring 30min, obtain graphene/nickel float；Then by centrifuge separating suspension, clean with deionized water and separate Thing, then dry 60 DEG C of temperature；Subsequently the mixture mixed gas atmosphere in argon/hydrogen=95/5 flowing drying gained Under, it is raised to 750 DEG C with the heating rate of 5 DEG C/min from room temperature, then furnace cooling after insulation 3h, prepares graphene/nickel multiple Compound；Then inserting in ball grinder by a copy of it alloy powder crossing 250 mesh sieve gained, being simultaneously introduced mass fraction is 2% Graphene/nickel complex, then under argon shield, utilize planetary ball mill direct mechanical ball milling 10min, ball material during ball milling Ratio is 20:1, and rotating speed is 250 revs/min, then will prepare gained sample and configure for 1:4 in mass ratio with carbonyl nickel powder, and uniformly mix Being pressed into a diameter of 10mm after conjunction under 20MPa pressure, thickness is the circular electric pole piece of 1mm；Finally the electrode preparing gained Sheet is as negative pole, with the KOH aqueous solution of 6mol/L as electrolyte, with the Ni (OH) of sintering2/ NiOOH electrode is positive pole, at opening Formula three-electrode method system carries out every electrochemical property test.
2. utilize the La-Mg-Ni/ Graphene as described in claims 1, La-Mg-Ni/ (graphene/nickel complex) to be prepared as Ni-MH battery, is mainly used in Ni-MH battery system.
CN201610403149.3A 2016-06-08 2016-06-08 A method of improving La-Mg-Ni based alloy electrode electro Chemical dynamic performances Active CN106025213B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610403149.3A CN106025213B (en) 2016-06-08 2016-06-08 A method of improving La-Mg-Ni based alloy electrode electro Chemical dynamic performances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610403149.3A CN106025213B (en) 2016-06-08 2016-06-08 A method of improving La-Mg-Ni based alloy electrode electro Chemical dynamic performances

Publications (2)

Publication Number Publication Date
CN106025213A true CN106025213A (en) 2016-10-12
CN106025213B CN106025213B (en) 2018-07-27

Family

ID=57090018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610403149.3A Active CN106025213B (en) 2016-06-08 2016-06-08 A method of improving La-Mg-Ni based alloy electrode electro Chemical dynamic performances

Country Status (1)

Country Link
CN (1) CN106025213B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107164657A (en) * 2017-06-15 2017-09-15 燕山大学 A kind of preparation method of graphene/La Fe B systems low temperature hydrogen storage composite

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113497A (en) * 2006-07-25 2008-01-30 北京有色金属研究总院 Method for preparing RE-Mg-Ni-M series hydrogen storage alloy
CN101429598A (en) * 2008-12-04 2009-05-13 上海大学 Method for producing La-Mg-Ni based type AB3 hydrogen storage alloy
CN104846224A (en) * 2015-05-17 2015-08-19 桂林理工大学 Method for performing surface modification on AB3-type hydrogen storage alloy by utilization of graphene

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113497A (en) * 2006-07-25 2008-01-30 北京有色金属研究总院 Method for preparing RE-Mg-Ni-M series hydrogen storage alloy
CN101429598A (en) * 2008-12-04 2009-05-13 上海大学 Method for producing La-Mg-Ni based type AB3 hydrogen storage alloy
CN104846224A (en) * 2015-05-17 2015-08-19 桂林理工大学 Method for performing surface modification on AB3-type hydrogen storage alloy by utilization of graphene

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
蓝志强等: ""导电剂镍粉对La0.7Mg0.3Ni2.6Co0.7合金电极电化学性能的影响"", 《广西大学学报：自然科学版》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107164657A (en) * 2017-06-15 2017-09-15 燕山大学 A kind of preparation method of graphene/La Fe B systems low temperature hydrogen storage composite

Also Published As

Publication number Publication date
CN106025213B (en) 2018-07-27

Similar Documents

Publication Publication Date Title
CN106207094B (en) A kind of lithium battery graphene conductive slurry and preparation method thereof
CN104201366B (en) A kind of preparation method of high security high compacted density nickle cobalt lithium manganate NCM523 ternary material
CN105355911B (en) A kind of preparation method of alumina-coated nickel-cobalt lithium manganate cathode material
CN106784686A (en) A kind of doped lithium ion battery class monocrystalline multicomponent material and preparation method thereof
CN108172825B (en) High-voltage high-compaction low-cost lithium cobalt oxide positive electrode material and preparation method thereof
CN103872315B (en) A kind of preparation method of cobalt acid lithium composite positive pole of Ge-doped high-energy-density
CN104846224B (en) One utilizes graphenic surface modification AB3the method of type hydrogen storage alloy
CN106450289A (en) High-voltage lithium cobalt oxide positive electrode material and preparation method therefor
CN104064368B (en) Preparation method of Ni/C negative pole slurry and piece for super-capacitor battery
CN108767216A (en) Anode material for lithium-ion batteries and its synthetic method with the full concentration gradient of variable slope
CN107516740A (en) A kind of carbon ink, graphene powder combined conductive agent and preparation method thereof, application
CN105355906A (en) Preparing method for spherical LiMn1-x-yNixCoyO2 anode material
CN105720242A (en) Method for modifying lithium ion battery cathode material
CN101643864A (en) Multielement silicon alloy/carbon composite material and preparation method and application thereof
CN101740768B (en) Hydrogen storage alloy and preparation method thereof and cathode and battery using same
CN108977676A (en) A kind of 3R type AB4Hydrogen bearing alloy and its preparation method and application
CN107316974B (en) Preparation method of nano-silver composite lithium iron phosphate cathode material
CN106711420B (en) A kind of preparation method of lithium battery lithium titanate composite anode material
CN110492086B (en) Preparation method of hydrogen storage alloy composite material
CN106025213B (en) A method of improving La-Mg-Ni based alloy electrode electro Chemical dynamic performances
CN106299276A (en) A kind of preparation method of ion cathode material lithium silver surface modified lithium titanate
CN105355887B (en) A kind of preparation method of magnesia cladding nickel-cobalt lithium manganate cathode material
CN101502817A (en) Planetary type ball-milling treatment for preparing electrolytic manganese dioxide
CN104362291B (en) A kind of lithium-enriched cathodic material of lithium ion battery and preparation method thereof and lithium ion battery
CN110241350A (en) Cupric cobalt boron hydrogen storage material and its preparation method and application

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant