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
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- JP
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- positive electrode
- lithium ion
- ion battery
- electrode material
- battery according
- Prior art date
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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) |
Families Citing this family (12)
| 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 |
| JP7102831B2 (en) * | 2018-03-23 | 2022-07-20 | Tdk株式会社 | Positive electrode and lithium ion secondary battery |
| 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 |
| US12155062B2 (en) * | 2019-02-01 | 2024-11-26 | Nichia Corporation | Electrode active material for non-aqueous secondary battery comprising carbon material modified with one-electron oxidant and method for producing the same |
| US12107250B2 (en) | 2019-02-01 | 2024-10-01 | Nichia Corporation | Method for producing electrode active material for non-aqueous secondary battery |
| 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 |
| KR20220127230A (en) * | 2019-12-27 | 2022-09-19 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | A method for producing an electrode slurry, a method for producing an electrode, a method for producing a positive electrode, an electrode for a secondary battery, a positive electrode for a secondary battery |
| JPWO2021141013A1 (en) * | 2020-01-07 | 2021-07-15 | ||
| 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 |
| CN117999245A (en) * | 2023-12-26 | 2024-05-07 | 广东邦普循环科技有限公司 | Lithium manganate material and preparation method and application thereof |
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 |
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2017
- 2017-04-20 JP JP2017083464A patent/JP6930196B2/en active Active
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