JP2017199670A5 - - Google Patents
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- JP2017199670A5 JP2017199670A5 JP2017083464A JP2017083464A JP2017199670A5 JP 2017199670 A5 JP2017199670 A5 JP 2017199670A5 JP 2017083464 A JP2017083464 A JP 2017083464A JP 2017083464 A JP2017083464 A JP 2017083464A JP 2017199670 A5 JP2017199670 A5 JP 2017199670A5
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- lithium ion
- ion battery
- electrode material
- battery according
- 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.)
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- 239000007774 positive electrode material Substances 0.000 claims 28
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims 19
- 229910001416 lithium ion Inorganic materials 0.000 claims 19
- 239000002245 particle Substances 0.000 claims 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 11
- 229910021389 graphene Inorganic materials 0.000 claims 11
- 229910052799 carbon Inorganic materials 0.000 claims 4
- 238000007306 functionalization reaction Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N precursor Substances N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims 3
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 claims 2
- 239000011149 active material Substances 0.000 claims 2
- 239000006185 dispersion Substances 0.000 claims 2
- 238000001069 Raman spectroscopy Methods 0.000 claims 1
- 239000006087 Silane Coupling Agent Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000007791 liquid phase Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
Claims (15)
前記官能基化グラフェンによる前記正極活物質粒子の平均被覆率が８０％以上であり；
前記正極材料のＸ線光電子分光測定による測定値から下記式（１）により求められる官能基化率が０．３以上１．３以下であるリチウムイオン電池用正極材料。
官能基化率＝［（Ｃ−Ｏ一重結合に基づくピーク面積）＋（Ｃ＝Ｏ二重結合に基づくピーク面積）＋（ＣＯＯ結合に基づくピーク面積）］／（Ｃ−Ｃ、Ｃ＝Ｃ及びＣ−Ｈ結合に基づくピーク面積）・・・（１） A positive electrode material for a lithium ion battery, wherein the positive electrode active material particles are coated with functionalized graphene,
An average coverage of the positive electrode active material particles by the functionalized graphene is 80% or more;
A positive electrode material for a lithium ion battery, wherein the functional grouping ratio of the positive electrode material determined by the following formula (1) from a value measured by X-ray photoelectron spectroscopy is from 0.3 to 1.3.
Functionalization rate = [(peak area based on C—O single bond) + (C = peak area based on O double bond) + (peak area based on COO bond)] / (C—C, C = C and Peak area based on CH bond) (1)
該前駆体粒子を、Ｘ線光電子分光測定による測定値から下記式（１）により求められる官能基化率が０．３以上１．３以下となるように還元する工程；
を有するリチウムイオン電池用正極材料の製造方法。
官能基化率＝［（Ｃ−Ｏ一重結合に基づくピーク面積）＋（Ｃ＝Ｏ二重結合に基づくピーク面積）＋（ＣＯＯ結合に基づくピーク面積）］／（Ｃ−Ｃ、Ｃ＝Ｃ及びＣ−Ｈ結合に基づくピーク面積）・・・（１） A step of preparing precursor particles in which the positive electrode active material particles for a lithium ion battery are coated with graphene oxide by repeating the operation of mixing the liquid phase of the graphene oxide dispersion and the positive electrode active material particles and then drying the mixture;
A step of reducing the precursor particles so that a functional grouping ratio determined by the following formula (1) from a value measured by X-ray photoelectron spectroscopy is 0.3 or more and 1.3 or less;
A method for producing a positive electrode material for a lithium ion battery, comprising:
Functionalization rate = [(peak area based on C—O single bond) + (C = peak area based on O double bond) + (peak area based on COO bond)] / (C—C, C = C and Peak area based on CH bond) (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016085007 | 2016-04-21 | ||
| JP2016085007 | 2016-04-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017199670A JP2017199670A (en) | 2017-11-02 |
| JP2017199670A5 true JP2017199670A5 (en) | 2020-04-02 |
| JP6930196B2 JP6930196B2 (en) | 2021-09-01 |
Family
ID=60238123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017083464A Active JP6930196B2 (en) | 2016-04-21 | 2017-04-20 | Positive electrode materials for lithium-ion batteries and their manufacturing methods, positive electrodes for lithium-ion batteries, lithium-ion batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6930196B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7102831B2 (en) | 2018-03-23 | 2022-07-20 | Tdk株式会社 | Positive electrode and lithium ion secondary battery |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102212939B1 (en) * | 2017-12-04 | 2021-02-04 | 한국전기연구원 | Reduced graphene oxide - silicon metal particle composite, method for producing a composite, and fabrication of electrodes for secondary battery and process for preparing the same |
| JP2019175633A (en) * | 2018-03-28 | 2019-10-10 | Tdk株式会社 | Lithium ion secondary battery |
| JP7031097B2 (en) * | 2018-07-26 | 2022-03-08 | 株式会社Abri | Charging / discharging method of lithium secondary battery |
| WO2020158887A1 (en) * | 2019-02-01 | 2020-08-06 | 日亜化学工業株式会社 | Method for manufacturing electrode active material for non-aqueous secondary cell |
| JP7406109B2 (en) * | 2019-02-01 | 2023-12-27 | 日亜化学工業株式会社 | Electrode active material for non-aqueous secondary batteries and method for producing the same |
| CN110311113B (en) * | 2019-07-02 | 2021-04-13 | 宁夏汉尧石墨烯储能材料科技有限公司 | Graphene-coated lithium ion battery cathode material |
| US20230028284A1 (en) * | 2019-12-27 | 2023-01-26 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of electrode slurry, manufacturing method of electrode, manufacturing method of positive electrode, electrode for secondary battery, and positive electrode for secondary battery |
| US20230299270A1 (en) * | 2020-01-07 | 2023-09-21 | Sekisui Chemical Co., Ltd. | Method for producing particles |
| CN114156462A (en) * | 2021-06-15 | 2022-03-08 | 宁夏汉尧石墨烯储能材料科技有限公司 | Lithium ion battery electrode with nano-scale coating for improving performance of monocrystal-like anode material |
| WO2023119857A1 (en) * | 2021-12-22 | 2023-06-29 | パナソニックホールディングス株式会社 | Negative electrode for solid-state battery and solid-state battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2950374B1 (en) * | 2013-01-23 | 2019-08-28 | Toray Industries, Inc. | Positive electrode active material/graphene composite particles, positive electrode material for lithium ion cell, and method for manufacturing positive electrode active material/graphene composite particles |
-
2017
- 2017-04-20 JP JP2017083464A patent/JP6930196B2/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7102831B2 (en) | 2018-03-23 | 2022-07-20 | Tdk株式会社 | Positive electrode and lithium ion secondary battery |
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