JP2016009682A - リチウム硫黄電池用陽極 - Google Patents
リチウム硫黄電池用陽極 Download PDFInfo
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- JP2016009682A JP2016009682A JP2014262498A JP2014262498A JP2016009682A JP 2016009682 A JP2016009682 A JP 2016009682A JP 2014262498 A JP2014262498 A JP 2014262498A JP 2014262498 A JP2014262498 A JP 2014262498A JP 2016009682 A JP2016009682 A JP 2016009682A
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title claims abstract description 63
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000011149 active material Substances 0.000 claims abstract description 63
- 239000004020 conductor Substances 0.000 claims description 111
- 239000011247 coating layer Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 32
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 31
- 239000011593 sulfur Substances 0.000 claims description 31
- 229910052717 sulfur Inorganic materials 0.000 claims description 31
- 239000002002 slurry Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000002105 nanoparticle Substances 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005470 impregnation Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000003273 ketjen black Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- -1 Caron Fabric Chemical compound 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 description 8
- 229920001021 polysulfide Polymers 0.000 description 8
- 239000005077 polysulfide Substances 0.000 description 8
- 150000008117 polysulfides Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000002033 PVDF binder Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 239000002134 carbon nanofiber Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012966 insertion method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- OAQFWXZTYJRQMD-UHFFFAOYSA-N C=C=C=C.C=CC1=CC=CC=C1 Chemical compound C=C=C=C.C=CC1=CC=CC=C1 OAQFWXZTYJRQMD-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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- H01M4/72—Grids
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
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- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
本発明による一つの好ましい例としては、硫黄:導電材が6:4〜9:1の重量割合で混合したものが使われる。バインダーが使われる場合の好ましい例としては、硫黄:導電材:バインダーが6:2:2〜7:2:1の重量割合で混合され製造されたものを含浸用スラリーとして使う。
11a 纎維
12 硫黄活物質
13 導電材
14 導電材コーティング層
Claims (15)
- 電極のボディーを成すプレート状の多孔性炭素構造体の空隙内部に硫黄活物質が挿入されていて、前記多孔性炭素構造体の表面全体にはナノ粒子の導電材が緻密にコーティングされた導電材コーティング層が形成されていることを特徴とするリチウム硫黄電池用陽極。
- 前記炭素構造体は、Woven Carbon Fiber、Caron Fabric、Carbon Fiber Clothの中から選択された一つ以上の炭素纎維を利用した不織布から構成されたことを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記炭素構造体は空隙率が30〜90%であることを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記活物質は多孔性炭素構造体の空隙内で炭素纎維に付着、コーティングまたは空隙が満たされた状態で均一に存在することを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記炭素構造体の空隙内には、活物質とともに導電材、バインダーまたはこれら全てがさらに含有されていることを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記導電材コーティング層は、ケッチェンブラック(Ketjen Black)、スーパーカーボン(Super C)の中から選択された一つ以上からなることを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記導電材コーティング層は、その厚さが1〜30μmであることを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 前記導電材コーティング層は、炭素構造体の各面でその成分と厚さが互いに同一もしくは、異なることを特徴とする請求項1に記載のリチウム硫黄電池用陽極。
- 陽極のボディーを構成するプレート状の多孔性炭素構造体を製造する段階、
前記炭素構造体の表面の中から広い表面一つだけを残して、残り5面をナノ粒子の導電材で緻密にコーティングし、5面に導電材コーティング層を形成する段階、
導電材が5面にコーティングされた前記炭素構造体の内部に硫黄活物質を挿入する段階、
前記活物質が挿入された前記炭素構造体を乾燥する段階、及び
前記乾燥された炭素構造体の表面の中で導電材がコーティングされない残り一つの面を導電材で緻密にコーティングして残りの面に導電材コーティング層を形成する段階
を含むリチウム硫黄電池用陽極の製造方法。 - 前記導電材コーティング層の形成は、キャスティング法またはAerosol Deposition法でコーティングして形成することを特徴とする請求項9に記載のリチウム硫黄電池用陽極の製造方法。
- 前記活物質の挿入は、スラリー含浸法または溶融法で挿入することを特徴とする請求項9に記載のリチウム硫黄電池用陽極の製造方法。
- 前記活物質を挿入する時、活物質とともに導電材、バインダーまたはこれら全てをさらに挿入することを特徴とする請求項9または請求項11に記載のリチウム硫黄電池用陽極。
- 前記乾燥は、40〜80℃で8〜18時間乾燥することを特徴とする請求項9に記載のリチウム硫黄電池用陽極の製造方法。
- 請求項1ないし請求項8によるリチウム硫黄電池用陽極を含むリチウム硫黄電池。
- 自動車用であることを特徴とする請求項14に記載のリチウム硫黄電池。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2014-0077371 | 2014-06-24 | ||
KR1020140077371A KR101583948B1 (ko) | 2014-06-24 | 2014-06-24 | 리튬황 전지용 양극 |
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JP2016009682A true JP2016009682A (ja) | 2016-01-18 |
JP6539442B2 JP6539442B2 (ja) | 2019-07-03 |
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US (1) | US9876223B2 (ja) |
JP (1) | JP6539442B2 (ja) |
KR (1) | KR101583948B1 (ja) |
CN (1) | CN105322136B (ja) |
DE (1) | DE102015207449B4 (ja) |
Cited By (5)
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JP2019510337A (ja) * | 2016-01-20 | 2019-04-11 | コーネル ユニバーシティ | マルチドメイン硫黄電極及びその製造方法 |
KR20190091830A (ko) * | 2018-01-29 | 2019-08-07 | 공주대학교 산학협력단 | 탄소 코팅된 이중상 니오븀 산화물, 그 제조 방법 및 그를 포함하는 리튬이온전지 |
US10522825B2 (en) | 2015-09-23 | 2019-12-31 | Lg Chem, Ltd. | Cathode active material and cathode comprising metal nano particles, and lithium-sulfur battery comprising same |
WO2023031639A1 (ja) * | 2021-09-02 | 2023-03-09 | 日産自動車株式会社 | 電気デバイス用正極材料ならびにこれを用いた電気デバイス用正極および電気デバイス |
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CN105552302A (zh) * | 2016-02-04 | 2016-05-04 | 中山大学 | 一种可折叠硫正极复合电极结构 |
FR3059471B1 (fr) * | 2016-11-28 | 2019-05-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Procede de fabrication d'une electrode positive pour accumulateur electrochimique lithium-soufre |
FR3059470B1 (fr) * | 2016-11-28 | 2019-05-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Procede de fabrication d'une electrode positive poreuse pour accumulateur electrochimique lithium-soufre |
CN109565073A (zh) | 2016-11-28 | 2019-04-02 | 株式会社Lg化学 | 包含金属硫化物纳米粒子的锂硫电池用正极活性材料及其制造方法 |
US10971733B2 (en) * | 2017-01-26 | 2021-04-06 | Drexel University | Rapid sulfur melt diffusion into carbon host for making electrodes |
WO2018165430A1 (en) * | 2017-03-08 | 2018-09-13 | Axium Ip, Llc | Multi-domained high performance electrodes, materials, and precursors thereof |
KR102063584B1 (ko) | 2017-06-13 | 2020-01-09 | 주식회사 엘지화학 | 전극조립체 및 그의 제조방법 |
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CN105322136A (zh) | 2016-02-10 |
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US20150372291A1 (en) | 2015-12-24 |
CN105322136B (zh) | 2019-07-30 |
KR20160000235A (ko) | 2016-01-04 |
US9876223B2 (en) | 2018-01-23 |
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KR101583948B1 (ko) | 2016-01-08 |
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