JP2011513912A5 - - Google Patents
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- JP2011513912A5 JP2011513912A5 JP2010548607A JP2010548607A JP2011513912A5 JP 2011513912 A5 JP2011513912 A5 JP 2011513912A5 JP 2010548607 A JP2010548607 A JP 2010548607A JP 2010548607 A JP2010548607 A JP 2010548607A JP 2011513912 A5 JP2011513912 A5 JP 2011513912A5
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- Prior art keywords
- carbonate
- negative electrode
- lithium ion
- ion secondary
- coating layer
- Prior art date
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- 239000011247 coating layer Substances 0.000 claims description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 6
- 229910001416 lithium ion Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Inorganic materials [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 claims description 2
- VKSWWACDZPRJAP-UHFFFAOYSA-N 1,3-dioxepan-2-one Chemical compound O=C1OCCCCO1 VKSWWACDZPRJAP-UHFFFAOYSA-N 0.000 claims 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N Dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N Propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims 1
- RSYNHXZMASRGMC-UHFFFAOYSA-M butan-2-yl carbonate Chemical compound CCC(C)OC([O-])=O RSYNHXZMASRGMC-UHFFFAOYSA-M 0.000 claims 1
- FXPHJTKVWZVEGA-UHFFFAOYSA-M ethenyl carbonate Chemical class [O-]C(=O)OC=C FXPHJTKVWZVEGA-UHFFFAOYSA-M 0.000 claims 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims 1
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
Description
上記のリチウムイオン二次電池用負極の製造方法は、(S1)カーボネート系有機溶媒にLiPF6を溶解させた電解液に負極を浸漬させて3電極セルまたは2電極セルを形成する段階、及び(S2)前記セルに電圧または電流を印加して前記負極の表面にLiF系粒子からなるコーティング層を形成する段階を含み、それぞれの段階は水分環境(a moisture circumstance:水分(湿気、湿潤)の状況(環境))下で行われることを特徴とする。
通常有機溶媒を使用する電解液において、有機といっても微量の水分が含まれることは避けられない。本発明においては、電解液に本来含まれている水分の外に、さらに水分環境下で負極を製造することが負極表面のコーティング層の形成により効果的である。コーティング層が最もよく形成され得る水分環境は、水分の濃度が50〜2、000重量ppmであるが、これに限定されることはない。
Claims (3)
- リチウムイオン二次電池用負極の製造方法であって、
前記リチウムイオン二次電池用負極が、
負極と、
前記負極の表面にLiF系粒子で形成されたコーティング層とを備えてなり、
前記LiF系コーティング層の厚さが0.05μm〜1μmであり、
(S1)カーボネート系有機溶媒にLiPF6を溶解させた電解液に負極を浸漬させて3電極セルまたは2電極セルを形成する段階と、
(S2)前記セルに電圧を印加して前記負極の表面にLiF系粒子で形成されたコーティング層を形成する段階とを含んでなり、
それぞれの段階が、50重量ppm〜1、000重量ppmの水分を含んでなる水分環境下で行われてなり、
前記(S2)段階で、LiF系粒子からなるコーティング層を0.05μm〜1μmの厚さで形成してなる、リチウムイオン二次電池用負極の製造方法。 - 前記カーボネート系有機溶媒が、エチレンカーボネート、プロピレンカーボネート、ジメチルカーボネート、ジエチルカーボネート、メチルプロピルカーボネート、エチルプロピルカーボネート、エチルメチルカーボネート、ブチレンカーボネート及びフッ素化ビニルカーボネートからなる群より選択されてなる一種又はこれらの二種以上の混合物である、請求項1に記載のリチウムイオン二次電池用負極の製造方法。
- 前記(S2)段階において、3電極セルまたは2電極セルに印加される電圧が0.1V〜3V(vs.Li/Li+)である、請求項1又は2に記載のリチウムイオン二次電池用負極の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20080016734 | 2008-02-25 | ||
KR10-2008-0016734 | 2008-02-25 | ||
PCT/KR2009/000867 WO2009107964A2 (en) | 2008-02-25 | 2009-02-24 | Anode coated with lithium fluoride compounds, method for preparing the same, and lithium secondary battery having the same |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011513912A JP2011513912A (ja) | 2011-04-28 |
JP2011513912A5 true JP2011513912A5 (ja) | 2013-12-19 |
JP5687496B2 JP5687496B2 (ja) | 2015-03-18 |
Family
ID=41016579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010548607A Active JP5687496B2 (ja) | 2008-02-25 | 2009-02-24 | LiF系化合物でコーティングされた負極及びその製造方法、並びにその負極を含むリチウムイオン二次電池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8609273B2 (ja) |
JP (1) | JP5687496B2 (ja) |
KR (2) | KR101196798B1 (ja) |
CN (1) | CN101960651B (ja) |
WO (1) | WO2009107964A2 (ja) |
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US9966598B2 (en) * | 2014-09-30 | 2018-05-08 | The Board Of Trustees Of The Leland Stanford Junior University | High capacity prelithiation reagents and lithium-rich anode materials |
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2009
- 2009-02-23 KR KR1020090014999A patent/KR101196798B1/ko active IP Right Grant
- 2009-02-24 US US12/919,148 patent/US8609273B2/en active Active
- 2009-02-24 WO PCT/KR2009/000867 patent/WO2009107964A2/en active Application Filing
- 2009-02-24 CN CN200980106371.5A patent/CN101960651B/zh active Active
- 2009-02-24 JP JP2010548607A patent/JP5687496B2/ja active Active
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