JP2016009682A - リチウム硫黄電池用陽極 - Google Patents
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Abstract
リチウム硫黄電池用陽極を提供する。
【解決手段】
多孔性炭素構造体に活物質が挿入されていて、その多孔性炭素構造体の表面が導電材で緻密にコーティングされているので、集電体なしに電極内に活物質及び導電材の含量を極大化することができ、充放電效率と充電容量及び寿命が向上することを特徴とする。
【選択図】図1
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。
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| 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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| JP6539442B2 JP6539442B2 (ja) | 2019-07-03 |
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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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| 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 |
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| KR102099000B1 (ko) | 2018-01-29 | 2020-04-09 | 공주대학교 산학협력단 | 탄소 코팅된 이중상 니오븀 산화물, 그 제조 방법 및 그를 포함하는 리튬이온전지 |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102015207449B4 (de) | 2023-11-09 |
| JP6539442B2 (ja) | 2019-07-03 |
| CN105322136A (zh) | 2016-02-10 |
| US20150372291A1 (en) | 2015-12-24 |
| US9876223B2 (en) | 2018-01-23 |
| KR101583948B1 (ko) | 2016-01-08 |
| DE102015207449A1 (de) | 2015-12-24 |
| CN105322136B (zh) | 2019-07-30 |
| KR20160000235A (ko) | 2016-01-04 |
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