JP7377401B2 - 不織布、不織布の製造方法、固体電解質膜、固体電解質膜の製造方法、全固体電池および全固体電池の製造方法 - Google Patents
不織布、不織布の製造方法、固体電解質膜、固体電解質膜の製造方法、全固体電池および全固体電池の製造方法 Download PDFInfo
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- JP7377401B2 JP7377401B2 JP2019084028A JP2019084028A JP7377401B2 JP 7377401 B2 JP7377401 B2 JP 7377401B2 JP 2019084028 A JP2019084028 A JP 2019084028A JP 2019084028 A JP2019084028 A JP 2019084028A JP 7377401 B2 JP7377401 B2 JP 7377401B2
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Wood Science & Technology (AREA)
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- Composite Materials (AREA)
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- Conductive Materials (AREA)
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Description
以下、本発明の実施の形態を図面に基づいて詳細に説明する。
[全固体電池の構成]
図1は、実施の形態の全固体電池の構成を模式的に示す断面図である。この全固体電池(固体電池ともいう)はリチウムイオン二次電池である。
[固体電解質膜の製法]
<極細ファイバー不織布の製法>
レーザーエレクトロスピニング(LES)法とは、繊維原料(原料樹脂)を一定速度で送り出しながら、ノズルに高電圧(例えば、11~24kV程度)を印加した状態で、レーザー光を照射して繊維原料を瞬間的に均一加熱溶融し、静電力によって引き伸ばして極細繊維を作製する方法である。レーザー光で加熱のため加熱時間が短く、熱分解を極力抑えられ、また、静電力で引き伸ばすため応用集中が起こり難く、安定した紡糸が可能であるという特徴を有する。
セルロースナノクリスタルやセルロースナノウィスカーを用いてもよい。セルロースナノファイバー、セルロースナノクリスタルおよびセルロースナノウィスカーは、ナノセルロースと呼ばれる。
<極細ファイバー不織布を用いた固体電解質膜の製法>
図2は、本実施の形態の固体電解質膜の製造工程を示す図である。前述の<極細ファイバー不織布の製法>により得られた極細ファイバー不織布を用いて固体電解質膜を形成する。
[実施例]
(実施例1)
本実施例では、レーザーエレクトロスピニング(LES)法によりHDPEの繊維ウェブ(不織布、繊維束、繊維シートともいう)を作製した。LES装置としては、カトーテック社製のエレクトロスピニング(ES)装置と鬼塚硝子製の炭酸ガスレーザー発生装置(PIN-30R)を組み合わせた装置を使用した。繊維を送り出すニードルには、20G規格のものを用い、これをノズルとして使用した。なお、LES装置はアクリル樹脂製の包囲ボックスによって覆われており、この包囲ボックス内の雰囲気はドライエアの流し込みにより湿度10-30%RHに保たれている。これにより、繊維形成時における湿度の影響をなくすことができる。
本実施例では、レーザーエレクトロスピニング(LES)法によりCeNF添加HDPEの繊維ウェブを作製した。原料樹脂として、CeNF添加したHDPEを用いて実施例1と同様に繊維ウェブを作製した。CeNFのHDPEに対する添加量は、1体積%(CeNF1体積%、HDPE99体積%)とし、CeNFとしては、セオラスFD101(旭化成ケミカルズ(株)製)を用いた。
[全固体電池の製法]
図1を参照しながら説明した上記全固体電池の製法に制限はないが、例えば、以下の様にして作製することができる。図10は、全固体電池の製造工程を示す断面図である。
[全固体電池の動作]
上記全固体電池において、充電過程には、正極合剤層30Bの正極活物質3APからリチウムイオンが脱離し、放電過程には、負極合剤層20Aの負極活物質2APから脱離したリチウムイオンが挿入される。このように、リチウムイオンの挿入、離脱により、充放電を行うことができる。
2 ローラ
2AP 負極活物質
3 ノズル
3AP 正極活物質
4AP 固体電解質粒子
5 高電圧発生源
6 コレクター
7 接地電位
8 レーザー照射部
9 スリット
10 レーザー
20 負極
20A 負極合剤層
20B 負極集電体
30 正極
30A 正極合剤層
30B 正極集電体
40 固体電解質膜
S スラリー
UF 極細ファイバー
UFN 極細ファイバー不織布(不織布)
Claims (5)
- 支持体となる不織布と、マトリックス成分となる固体電解質とを有する固体電解質膜であって、
前記不織布として、ファイバーからなる不織布であって、前記ファイバーはナノセルロースが添加された熱可塑性ポリマーよりなる不織布を有する、固体電解質膜。 - 請求項1に記載の固体電解質膜において、
前記固体電解質は、リチウムイオン導電性である、固体電解質膜。 - 請求項1に記載の固体電解質膜において、
前記固体電解質は、硫化物系固体電解質である、固体電解質膜。 - 請求項1に記載の固体電解質膜において、
前記支持体の前記固体電解質膜に占める体積比率が、10体積%以上30体積%以下である、固体電解質膜。 - 請求項1乃至4のいずれか1項に記載の固体電解質膜を有する、全固体二次電池。
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JP2019084028A JP7377401B2 (ja) | 2019-04-25 | 2019-04-25 | 不織布、不織布の製造方法、固体電解質膜、固体電解質膜の製造方法、全固体電池および全固体電池の製造方法 |
CN202080030573.2A CN114040999A (zh) | 2019-04-25 | 2020-04-23 | 不织布、不织布的制造方法、固体电解质膜、固体电解质膜的制造方法、全固体电池及全固体电池的制造方法 |
PCT/JP2020/017491 WO2020218417A1 (ja) | 2019-04-25 | 2020-04-23 | 不織布、不織布の製造方法、固体電解質膜、固体電解質膜の製造方法、全固体電池および全固体電池の製造方法 |
US17/594,611 US20220247035A1 (en) | 2019-04-25 | 2020-04-23 | Non-woven fabric, method of manufacturing non-woven fabric, solid electrolyte membrane, method of manufacturing solid electrolyte membrane, all-solid-state battery, and method of manufacturing all-solid-state battery |
PL20794655.9T PL3960921T3 (pl) | 2019-04-25 | 2020-04-23 | Membrana z elektrolitem stałym, sposób produkcji membrany z elektrolitem stałym, bateria typu all-solid-battery i sposób produkcji baterii typu all-solid-state battery |
EP20794655.9A EP3960921B1 (en) | 2019-04-25 | 2020-04-23 | Solid electrolyte membrane, method for producing solid electrolyte membrane, all-solid-battery, and method for producing all-solid-state battery |
KR1020217036941A KR20220002958A (ko) | 2019-04-25 | 2020-04-23 | 부직포, 부직포의 제조 방법, 고체 전해질막, 고체 전해질막의 제조 방법, 전고체 전지 및 전고체 전지의 제조 방법 |
TW109113634A TW202044660A (zh) | 2019-04-25 | 2020-04-23 | 不織布、不織布的製造方法、固體電解質膜、固體電解質膜的製造方法、全固體電池及全固體電池的製造方法 |
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EP3960921A1 (en) | 2022-03-02 |
TW202044660A (zh) | 2020-12-01 |
JP2020180393A (ja) | 2020-11-05 |
KR20220002958A (ko) | 2022-01-07 |
EP3960921B1 (en) | 2024-01-31 |
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