JP2015057767A5 - - Google Patents
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- JP2015057767A5 JP2015057767A5 JP2014160438A JP2014160438A JP2015057767A5 JP 2015057767 A5 JP2015057767 A5 JP 2015057767A5 JP 2014160438 A JP2014160438 A JP 2014160438A JP 2014160438 A JP2014160438 A JP 2014160438A JP 2015057767 A5 JP2015057767 A5 JP 2015057767A5
- Authority
- JP
- Japan
- Prior art keywords
- active material
- graphene
- polyimide
- negative electrode
- positive electrode
- 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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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 12
- 229910021389 graphene Inorganic materials 0.000 claims 12
- 229920001721 Polyimide Polymers 0.000 claims 8
- 239000004642 Polyimide Substances 0.000 claims 8
- 239000002070 nanowire Substances 0.000 claims 5
- 239000011856 silicon-based particle Substances 0.000 claims 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims 4
- 239000011149 active material Substances 0.000 claims 4
- 229910001416 lithium ion Inorganic materials 0.000 claims 4
- 239000007773 negative electrode material Substances 0.000 claims 4
- 239000007774 positive electrode material Substances 0.000 claims 4
- 239000000203 mixture Substances 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
- 239000002798 polar solvent Substances 0.000 claims 2
- 239000002002 slurry Substances 0.000 claims 2
- 210000004940 Nucleus Anatomy 0.000 claims 1
- 239000002033 PVDF binder Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
Claims (3)
- 集電体及び活物質層を有する電極であって、
前記活物質層は、活物質、グラフェン、及びポリイミドを有し、
前記活物質は、シリコン粒子を核として、一軸方向に細長く針状に伸びたナノワイヤーを複数有し、
前記グラフェンは、前記複数のナノワイヤーと接する領域を有し、
前記ポリイミドは、前記グラフェンと接する領域を有するリチウムイオン二次電池用電極。 - 正極及び負極を少なくとも有するリチウムイオン二次電池であって、
前記負極は、負極集電体及び負極活物質層を有し、
前記負極活物質層は、負極活物質、第１のグラフェン、及びポリイミドを有し、
前記負極活物質は、シリコン粒子を核として、一軸方向に細長く針状に伸びたナノワイヤーを複数有し、
前記第１のグラフェンは、前記複数のナノワイヤーと接する領域を有し、
前記ポリイミドは、前記第１のグラフェンと接する領域を有し、
前記正極は、正極集電体及び正極活物質層を有し、
前記正極活物質層は、正極活物質、第２のグラフェン、及びポリフッ化ビニリデンを有し、
前記第２のグラフェンは、前記正極活物質と接する領域を有する、リチウムイオン二次電池。 - シリコン粒子と、酸化グラフェンとを混合し、
前記シリコン粒子及び前記酸化グラフェンの混合物に、ポリイミドの前駆体及び極性溶媒を含む混合液を混合して、スラリーを形成し、
前記スラリーを集電体上に塗布した後に、焼成することにより、
前記シリコン粒子を核として、一軸方向に細長く針状に伸びたナノワイヤーを形成し、前記酸化グラフェンを還元してグラフェンを形成し、かつ前記ポリイミドの前駆体をイミド化してポリイミドを形成し、
前記ポリイミドの前駆体及び極性溶媒を含む混合液のｐＨは、２以上４以下である、
リチウムイオン二次電池用電極の作製方法。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014160438A JP6506513B2 (ja) | 2013-08-09 | 2014-08-06 | リチウムイオン二次電池用電極の作製方法 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013166869 | 2013-08-09 | ||
| JP2013166869 | 2013-08-09 | ||
| JP2014160438A JP6506513B2 (ja) | 2013-08-09 | 2014-08-06 | リチウムイオン二次電池用電極の作製方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2015057767A JP2015057767A (ja) | 2015-03-26 |
| JP2015057767A5 true JP2015057767A5 (ja) | 2017-09-14 |
| JP6506513B2 JP6506513B2 (ja) | 2019-04-24 |
Family
ID=52448922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014160438A Active JP6506513B2 (ja) | 2013-08-09 | 2014-08-06 | リチウムイオン二次電池用電極の作製方法 |
Country Status (2)
| Country | Link |
|---|---|
| US (3) | US20150044560A1 (ja) |
| JP (1) | JP6506513B2 (ja) |
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| DE102016208250A1 (de) * | 2015-05-19 | 2016-11-24 | Semiconductor Energy Laboratory Co., Ltd. | Elektrode, Energiespeichervorrichtung und elektronische Vorrichtung |
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| CN112018369A (zh) * | 2020-09-07 | 2020-12-01 | 杭州肄康新材料有限公司 | 一种锂离子电池负极材料的制备方法 |
| CN112490416A (zh) * | 2020-10-28 | 2021-03-12 | 浙江中科玖源新材料有限公司 | 一种硅碳复合薄膜及其制备方法和应用以及锂离子电池 |
| JPWO2022202318A1 (ja) | 2021-03-26 | 2022-09-29 | ||
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-
2014
- 2014-08-06 US US14/452,848 patent/US20150044560A1/en not_active Abandoned
- 2014-08-06 JP JP2014160438A patent/JP6506513B2/ja active Active
-
2018
- 2018-04-27 US US15/965,189 patent/US10873072B2/en active Active
-
2020
- 2020-12-14 US US17/121,348 patent/US11848439B2/en active Active
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