JP7418904B2 - 多孔性集電体を含む全固体電池及びこれを含む電池モジュール - Google Patents
多孔性集電体を含む全固体電池及びこれを含む電池モジュール Download PDFInfo
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- JP7418904B2 JP7418904B2 JP2022577376A JP2022577376A JP7418904B2 JP 7418904 B2 JP7418904 B2 JP 7418904B2 JP 2022577376 A JP2022577376 A JP 2022577376A JP 2022577376 A JP2022577376 A JP 2022577376A JP 7418904 B2 JP7418904 B2 JP 7418904B2
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Images
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- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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Description
LiaMn2-yMyO4 (2)
LiaFe1-zMzPO4 (3)
押圧部材の圧力値による負極集電体及びストッパーの厚さ変化を確認するために、(A)負極集電体単独の場合、(B)ストッパー単独の場合、及び(C)負極集電体及びストッパーを一緒に適用した場合に区分して厚さ変化を測定し、その結果を下記の表1に記載した。
正極活物質としてNCM811(LiNi0.8Co0.1Mn0.1O2)、固体電解質としてアルジロダイト(Li6PS5Cl)、導電材としてカーボンブラック、及びバインダーとしてポリテトラフルオロエチレンを77.5:19.5:1.5:1.5の重量比で準備し、アニソール(Anisole)に分散して撹拌することによって正極スラリーを製造した。前記正極スラリーを15μmの厚さのアルミニウム集電体にドクターブレードを用いて塗布した後、100℃で12時間真空乾燥することによって正極を製造した。
図6に示す構造のように、前記実施例1で、全固体電池製作の際に正極の外周辺にも負極に配置したストッパーと同じものをさらに配置したことを除き、前記実施例1と同様な方法で全固体電池を製造した。
前記実施例1で、負極として使用したニッケル発泡体(Ni foam)の代わりにニッケル箔(Ni foil)を使い、ストッパーを適用しなかったことを除き、前記実施例1と同様な方法で全固体電池を製造した。
前記実施例1で、全固体電池製作の際にストッパーを使わず、負極としてニッケル発泡体(Ni foam)を単独で適用したことを除き、前記実施例1と同様な方法で全固体電池を製造した。
前記実施例1で、ストッパーとしてPETフィルムを5枚積層して使ったことを除き、前記実施例1と同様な方法で全固体電池を製造した。
前記実施例1及び実施例2と前記比較例1~3でそれぞれ製造した全固体電池を押圧部材に締結し、5MPaの圧力を印加した。
110 正極
111 正極集電体
112 正極合剤層
120 負極
121 気孔
122 リチウム
130 固体電解質層
140、141 ストッパー
150 押圧部材
h1 ストッパーの高さ
h2 負極の押圧前の厚さ
w1 ストッパーの長さ
w2 負極の外周辺の長さ
Claims (11)
- 正極合剤層がコーティングされた正極集電体を含む正極と、
多孔性構造の負極集電体を含む負極と、
前記正極及び負極の間に位置する固体電解質層と、
前記負極の外周辺に配置されるストッパーと、
前記正極、負極、及び固体電解質層を含む電極組立体並びに前記ストッパーを収容する電池ケースと、
前記正極及び負極の平面に平行な前記電池ケースの両面に配置され、前記電池ケースの内側方向に押圧する押圧部材と、
を含み、
前記ストッパーの高さは前記負極の押圧前の厚さと同じかそれより小さい、全固体電池。 - 前記負極集電体は金属素材からなる、請求項1に記載の全固体電池。
- 前記正極の外周辺に配置される追加のストッパーをさらに含む、請求項1または2に記載の全固体電池。
- 前記ストッパーは前記押圧部材の押圧面に対して垂直に配置される、請求項1から3のいずれか一項に記載の全固体電池。
- 前記ストッパーの高さは前記負極の押圧前の厚さより小さい、請求項1から4のいずれか一項に記載の全固体電池。
- 前記ストッパーの長さは前記ストッパーが配置された負極の外周辺の長さに対応する大きさである、請求項1から5のいずれか一項に記載の全固体電池。
- 前記押圧部材で電池ケースを押圧するとき、前記ストッパーは原形を維持する、請求項1から6のいずれか一項に記載の全固体電池。
- 前記全固体電池は充放電による体積変化がない、請求項1から7のいずれか一項に記載の全固体電池。
- 前記負極集電体の内部気孔でリチウムの付着(plating)及び脱離(stripping)が発生する、請求項1から8のいずれか一項に記載の全固体電池。
- 前記負極は多孔性構造の負極集電体からなる、請求項1から9のいずれか一項に記載の全固体電池。
- 請求項1~10のいずれか一項に記載の全固体電池を単位セルとして含む、電池モジュール。
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KR1020210041333A KR20220135536A (ko) | 2021-03-30 | 2021-03-30 | 다공성 집전체를 포함하는 전고체전지 및 이를 포함하는 전지모듈 |
KR10-2021-0041333 | 2021-03-30 | ||
PCT/KR2022/004406 WO2022211448A1 (ko) | 2021-03-30 | 2022-03-29 | 다공성 집전체를 포함하는 전고체전지 및 이를 포함하는 전지모듈 |
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JP2015092433A (ja) | 2012-02-24 | 2015-05-14 | 住友電気工業株式会社 | 全固体リチウム二次電池 |
JP2018125150A (ja) | 2017-01-31 | 2018-08-09 | 日立造船株式会社 | 全固体電池およびその製造方法 |
US20190157648A1 (en) | 2017-11-17 | 2019-05-23 | Hyundai Motor Company | All-solid battery and method of manufacturing the same |
WO2019187940A1 (ja) | 2018-03-28 | 2019-10-03 | 本田技研工業株式会社 | 固体電池および固体電池モジュール |
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JP2015092433A (ja) | 2012-02-24 | 2015-05-14 | 住友電気工業株式会社 | 全固体リチウム二次電池 |
JP2018125150A (ja) | 2017-01-31 | 2018-08-09 | 日立造船株式会社 | 全固体電池およびその製造方法 |
US20190157648A1 (en) | 2017-11-17 | 2019-05-23 | Hyundai Motor Company | All-solid battery and method of manufacturing the same |
WO2019187940A1 (ja) | 2018-03-28 | 2019-10-03 | 本田技研工業株式会社 | 固体電池および固体電池モジュール |
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