CN1397598A - Process for preparing carbon coated graphite microparticles - Google Patents
Process for preparing carbon coated graphite microparticles Download PDFInfo
- Publication number
- CN1397598A CN1397598A CN 02125715 CN02125715A CN1397598A CN 1397598 A CN1397598 A CN 1397598A CN 02125715 CN02125715 CN 02125715 CN 02125715 A CN02125715 A CN 02125715A CN 1397598 A CN1397598 A CN 1397598A
- Authority
- CN
- China
- Prior art keywords
- graphite microparticles
- graphite
- microparticles
- carbon coated
- coated graphite
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 51
- 239000010439 graphite Substances 0.000 title claims abstract description 51
- 239000011859 microparticle Substances 0.000 title claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000013081 microcrystal Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229920003987 resole Polymers 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 150000005846 sugar alcohols Chemical class 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 9
- 239000007773 negative electrode material Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 239000008151 electrolyte solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
A process for preparing carbon coated graphite microparticles used as negative electrode material of Li-ion battery features use of spray granulating method. It can elongate the service life of Li-ion battery.
Description
Technical field
The invention belongs to battery terminal material preparation technology scope, particularly as the good cycling stability of lithium ion battery negative material, the preparation method of a kind of carbon coated graphite microparticles that can in containing electricity Jie solution of propylene carbonate fat (PC), use.
Background technology
Because advantages such as it is low that graphite material has charging and discharging lithium battery voltage, and charge and discharge platform is long, and cycle life is good, it is as lithium ion battery anode material commercialization.But because small-molecule substances such as electrolytic solution are inserted altogether, graphite expansion and contraction cause graphite flake layer to come off, and make irreversible capacity bigger, and cycle life reduces.Graphite can not use in PC (propene carbonate) electrolytic solution, and PC is the more satisfactory electrolytic solution of lithium ion battery as electrolytic solution, and then graphite is used in lithium ion battery and is restricted.
Summary of the invention
The purpose of this invention is to provide a kind of preparation method who is used as the carbon coated graphite microparticles of lithium ion battery negative material, it is characterized in that: adopt the method for mist projection granulating to prepare coated graphite microparticles, earlier graphite microparticles and resin that is used as coating layer and ethanol are mixed formation suspension with volume ratio at 1: 1: 1, the suspension for preparing is sprayed droplet with high speed, the atomizing granulation disperses, the resin liquid flow constriction of fluidised form, coated graphite microparticles, form coating graphite, the composite micro-powder that mist projection granulating is obtained, in warm air, after the drying, do charing through 700-1200 ℃ again and handle, obtain the graphite microparticles that charcoal coats.
Described graphite microparticles can be natural micro crystal graphite, crystalline flake graphite or electrographite.
Described graphite microparticles makes its shape as far as possible near spherical through shaping, and granularity is between 5-40 μ m.
The resin of described coating layer is a kind of in resol, Resins, epoxy, the alditol resin.
The invention has the beneficial effects as follows that carbon coated graphite can upward reduce the irreversible capacity first of graphite largely, improve cyclical stability, kept low to charging and discharging lithium battery voltage, charge and discharge platform is long, the advantage that cycle life is good.Carbon coated graphite can use in containing the electrolytic solution of PC, and graphite is used in lithium ion battery and opened up new way.
Description of drawings
Fig. 1 is the synoptic diagram of carbon coated graphite microparticles preparation;
Fig. 2 is the electromicroscopic photograph figure of carbon coated graphite microparticles;
Fig. 3 is the structure synoptic diagram of carbon coated graphite microparticles.
Embodiment
The present invention is the preparation method as the carbon coated graphite microparticles of lithium ion battery negative material, Figure 1 shows that the synoptic diagram of carbon coated graphite microparticles preparation.Adopt the method for mist projection granulating to prepare carbon coated graphite microparticles, earlier graphite microparticles and resin that is used as the charcoal coating layer and ethanol are mixed formation suspension with volume ratio at 1: 1: 1, the suspension for preparing is sprayed droplet at a high speed, the atomizing granulation disperses, in this process, because the effect of surface energy, the resin liquid of fluidised form is with flow constriction, coated graphite microparticles, form coating graphite, the composite micro-powder that mist projection granulating is obtained then is in warm air after the drying, do charing through 700-1200 ℃ again and handle, obtain the graphite microparticles (as shown in Figure 2) that charcoal coats.The resin of used coating layer is resol, Resins, epoxy or alditol resin.Above-mentioned graphite microparticles is natural micro crystal graphite (also being called amorphous graphite or amorphous graphite), crystalline flake graphite, electrographite etc.; These graphite microparticles are through making its shape as far as possible near spherical (shown in Fig. 3 metallograph) after the shaping, granularity is between 5-40 μ m.
Claims (4)
1. the preparation method of a carbon coated graphite microparticles, it is characterized in that: adopt the method for mist projection granulating to prepare coated graphite microparticles, earlier graphite microparticles and resin that is used as coating layer and ethanol are mixed formation suspension with volume ratio at 1: 1: 1, the suspension for preparing is sprayed droplet with high speed, the atomizing granulation disperses, the resin liquid flow constriction of fluidised form, coated graphite microparticles, form coating graphite, the composite micro-powder that mist projection granulating is obtained, in warm air, after the drying, do charing through 700-1200 ℃ again and handle, obtain the graphite microparticles that charcoal coats.
2. according to the preparation method of the described carbon coated graphite microparticles of claim 1, it is characterized in that: described graphite microparticles can be natural micro crystal graphite, crystalline flake graphite or electrographite.
3. according to the preparation method of the described carbon coated graphite microparticles of claim 1, it is characterized in that: described graphite microparticles makes its shape as far as possible near spherical through shaping, and granularity is between 5-40 μ m.
4. according to the preparation method of the described carbon coated graphite microparticles of claim 1, it is characterized in that: the resin of described coating layer is a kind of in resol, Resins, epoxy, the alditol resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02125715 CN1222579C (en) | 2002-08-14 | 2002-08-14 | Process for preparing carbon coated graphite microparticles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02125715 CN1222579C (en) | 2002-08-14 | 2002-08-14 | Process for preparing carbon coated graphite microparticles |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1397598A true CN1397598A (en) | 2003-02-19 |
CN1222579C CN1222579C (en) | 2005-10-12 |
Family
ID=4745642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 02125715 Expired - Fee Related CN1222579C (en) | 2002-08-14 | 2002-08-14 | Process for preparing carbon coated graphite microparticles |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1222579C (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102522561A (en) * | 2011-12-21 | 2012-06-27 | 清华大学 | Lithium ion battery cathode material and preparation method thereof |
CN102610795A (en) * | 2011-01-20 | 2012-07-25 | 宁波宏远炭素工业有限公司 | Preparation method of lithium ion battery carbon cathode material coating layer |
CN102891297A (en) * | 2012-11-10 | 2013-01-23 | 江西正拓新能源科技有限公司 | Silicon-carbon composite material for lithium ion battery and preparation method thereof |
CN102945951A (en) * | 2012-11-28 | 2013-02-27 | 深圳市雄韬电源科技股份有限公司 | Preparation of lead carbon composite material and method manufacturing lead carbon batteries by utilizing material |
CN103311517A (en) * | 2012-03-07 | 2013-09-18 | 上海杉杉科技有限公司 | TiO2-coated graphite composite particle for lithium ion battery, and preparation method and application thereof |
CN101087021B (en) * | 2007-07-18 | 2014-04-30 | 深圳市贝特瑞新能源材料股份有限公司 | Man-made graphite cathode material for lithium ion battery and its making method |
CN108010726A (en) * | 2016-11-01 | 2018-05-08 | 东莞市东阳光电容器有限公司 | A kind of ultracapacitor nucleocapsid porous electrode material and preparation method thereof |
CN108275673A (en) * | 2018-04-07 | 2018-07-13 | 蒋黎婷 | A kind of preparation method of high-performance porous graphene film |
CN108598478A (en) * | 2018-04-25 | 2018-09-28 | 北方奥钛纳米技术有限公司 | Modified graphite preparation method and modified graphite |
CN108630940A (en) * | 2017-03-24 | 2018-10-09 | 宁波杉杉新材料科技有限公司 | A kind of preparation method of high power capacity natural graphite negative electrode material |
CN109616638A (en) * | 2018-12-05 | 2019-04-12 | 中南大学 | Spherical core-shell structure mixed graphite @ hard carbon composite material and preparation method and application thereof |
CN110797513A (en) * | 2018-08-03 | 2020-02-14 | 天津大学 | Graphite-hard carbon coated material and preparation method thereof |
CN111224104A (en) * | 2020-02-21 | 2020-06-02 | 超威电源集团有限公司 | Carbon composite material, paste, battery and preparation method |
-
2002
- 2002-08-14 CN CN 02125715 patent/CN1222579C/en not_active Expired - Fee Related
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101087021B (en) * | 2007-07-18 | 2014-04-30 | 深圳市贝特瑞新能源材料股份有限公司 | Man-made graphite cathode material for lithium ion battery and its making method |
CN102610795A (en) * | 2011-01-20 | 2012-07-25 | 宁波宏远炭素工业有限公司 | Preparation method of lithium ion battery carbon cathode material coating layer |
CN102610795B (en) * | 2011-01-20 | 2016-04-27 | 宁波宏远炭素工业有限公司 | A kind of preparation method of carbon negative electrode material of lithium ion cell coating layer |
CN102522561A (en) * | 2011-12-21 | 2012-06-27 | 清华大学 | Lithium ion battery cathode material and preparation method thereof |
CN103311517A (en) * | 2012-03-07 | 2013-09-18 | 上海杉杉科技有限公司 | TiO2-coated graphite composite particle for lithium ion battery, and preparation method and application thereof |
CN102891297A (en) * | 2012-11-10 | 2013-01-23 | 江西正拓新能源科技有限公司 | Silicon-carbon composite material for lithium ion battery and preparation method thereof |
CN102891297B (en) * | 2012-11-10 | 2015-05-13 | 江西正拓新能源科技股份有限公司 | Silicon-carbon composite material for lithium ion battery and preparation method thereof |
CN102945951A (en) * | 2012-11-28 | 2013-02-27 | 深圳市雄韬电源科技股份有限公司 | Preparation of lead carbon composite material and method manufacturing lead carbon batteries by utilizing material |
CN108010726A (en) * | 2016-11-01 | 2018-05-08 | 东莞市东阳光电容器有限公司 | A kind of ultracapacitor nucleocapsid porous electrode material and preparation method thereof |
CN108630940A (en) * | 2017-03-24 | 2018-10-09 | 宁波杉杉新材料科技有限公司 | A kind of preparation method of high power capacity natural graphite negative electrode material |
CN108630940B (en) * | 2017-03-24 | 2021-07-13 | 宁波杉杉新材料科技有限公司 | Preparation method of high-capacity natural graphite negative electrode material |
CN108275673A (en) * | 2018-04-07 | 2018-07-13 | 蒋黎婷 | A kind of preparation method of high-performance porous graphene film |
CN108598478A (en) * | 2018-04-25 | 2018-09-28 | 北方奥钛纳米技术有限公司 | Modified graphite preparation method and modified graphite |
CN110797513A (en) * | 2018-08-03 | 2020-02-14 | 天津大学 | Graphite-hard carbon coated material and preparation method thereof |
CN110797513B (en) * | 2018-08-03 | 2022-04-05 | 天津大学 | Graphite-hard carbon coated material and preparation method thereof |
CN109616638A (en) * | 2018-12-05 | 2019-04-12 | 中南大学 | Spherical core-shell structure mixed graphite @ hard carbon composite material and preparation method and application thereof |
CN111224104A (en) * | 2020-02-21 | 2020-06-02 | 超威电源集团有限公司 | Carbon composite material, paste, battery and preparation method |
CN111224104B (en) * | 2020-02-21 | 2021-08-10 | 超威电源集团有限公司 | Carbon composite material, paste, battery and preparation method |
Also Published As
Publication number | Publication date |
---|---|
CN1222579C (en) | 2005-10-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105576209B (en) | A kind of high-capacity lithium ion cell silicon based anode material and preparation method thereof, lithium ion battery | |
CN1222579C (en) | Process for preparing carbon coated graphite microparticles | |
CN102479949B (en) | Anode active material of lithium ion battery, preparation method thereof and lithium ion battery | |
CN103259005B (en) | A kind of preparation method of high power capacity high rate lithium ionic cell cathode material | |
CN101800304B (en) | Different-orientation spherical natural graphite negative electrode material and preparation method thereof | |
CN104810506B (en) | A kind of lithium ion battery of high-energy-density | |
CN103311514B (en) | A kind of preparation method of modification lithium-ion battery graphite cathode material | |
CN106025211A (en) | Preparation method of high-capacity silicon-based negative electrode material of lithium-ion battery | |
CN104966828A (en) | Preparation method of high-capacity lithium battery negative electrode material | |
JP3716818B2 (en) | Method for producing negative electrode material for high performance lithium ion secondary battery using natural graphite | |
CN109638273A (en) | A kind of method for coating and its secondary cell of sodium-ion battery positive material | |
CN105024044A (en) | Preparation method of high-capacity silica-powder-doped lithium battery anode slurry | |
CN101859893A (en) | Preparation method of lithium ion battery anode material | |
CN103311517B (en) | Lithium ion battery TiO2Coated graphite composite particles and its preparation method and application | |
CN109686918A (en) | A kind of electrodes of lithium-ion batteries and preparation method thereof | |
CN103346302A (en) | Lithium battery silicon-carbon nanotube composite cathode material as well as preparation method and application thereof | |
CN108682813A (en) | A kind of preparation method and application of Si-C composite material | |
CN104900862A (en) | P2 phase layered electrode material of symmetric sodium ion secondary battery and preparation method thereof | |
CN109244332A (en) | Improve the lithium battery diaphragm of siliceous negative electrode material head effect and the lithium battery of production method, preparation | |
CN102544444B (en) | Preparation method for lithium ion battery anode active material | |
CN105140481A (en) | Preparation method of high-capacity lithium-ion battery anode material | |
CN115275191B (en) | Negative electrode material, negative plate and sodium ion battery | |
CN105140483A (en) | Preparation method of modified lithium battery anode material | |
CN109167022B (en) | CoS hollow shell embedded TiO2Lithium ion battery cathode material of nano particles and preparation method thereof | |
CN111063875A (en) | Spongy porous structure silicon-based composite material and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051012 Termination date: 20180814 |
|
CF01 | Termination of patent right due to non-payment of annual fee |