JP2023501562A - フレキシブル二次電池用パッケージング及びそれを含むフレキシブル二次電池 - Google Patents
フレキシブル二次電池用パッケージング及びそれを含むフレキシブル二次電池 Download PDFInfo
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- JP2023501562A JP2023501562A JP2022527225A JP2022527225A JP2023501562A JP 2023501562 A JP2023501562 A JP 2023501562A JP 2022527225 A JP2022527225 A JP 2022527225A JP 2022527225 A JP2022527225 A JP 2022527225A JP 2023501562 A JP2023501562 A JP 2023501562A
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- secondary battery
- resin
- based resin
- flexible secondary
- barrier layer
- Prior art date
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Abstract
Description
第1高分子樹脂層と、
前記第1高分子樹脂層の上に形成されており、水分及び気体を遮断し、30~999nmの厚さを有し、複数個の層からなり、グラフェン、分散剤及び柔軟性結合剤であるピレンを含み、前記グラフェンとピレンがπ-π結合(π-π相互作用)(π-π interaction)しているバリアー層と、
前記バリアー層の上に形成されている第2高分子樹脂層を含むフレキシブル二次電池用パッケージングが提供される。
前記第1高分子樹脂層が、ポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリエチレンイミン系樹脂、ポリエーテル系樹脂、シアノアクリレート系樹脂、有機チタニウム系樹脂、ポリウレタン系樹脂、ポリエーテルウレタン系樹脂、エポキシ系樹脂、イミド系樹脂、イソシアネート系樹脂、シリコーン系樹脂またはこれらの二種以上を含み得る。
前記グラフェン100重量部を基準として、前記分散剤の含量が0.01~1重量部であり、前記ピレンの含量が0.1~2重量部であり得る。
前記グラフェンが無欠陷グラフェン(defect free graphene)であり得る。
前記分散剤は、CnH2n+1R(RがNH3、OHまたはCOOHであり、20≦n≦30)であり得る。
前記バリアー層の厚さが30~900nmであり得る。
前記バリアー層の層数が3~5個であり得る。
前記第2高分子樹脂層が、ポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリエチレンイミン系樹脂、ポリエーテル系樹脂、シアノアクリレート系樹脂、有機チタニウム系樹脂、ポリウレタン系樹脂、ポリエーテルウレタン系樹脂、エポキシ系樹脂、イミド系樹脂、イソシアネート系樹脂、シリコーン系樹脂またはこれらの二種以上を含み得る。
前記バリアー層と前記第1高分子樹脂層とが接する面、及び前記バリアー層と前記第2高分子樹脂層とが接する面のうち少なくとも一面に接着層がさらに形成され得る。
フレキシブル電極組立体及び前記フレキシブル電極組立体を内蔵するパッケージングを含むフレキシブル二次電池であって、
前記パッケージングは、第1から9のいずれか一具現例によるフレキシブル二次電池用パッケージングであるフレキシブル二次電池が提供される。
第1高分子樹脂層と、
前記第1高分子樹脂層の上に形成されており、水分及び気体を遮断し、30~999nmの厚さを有し、複数個の層からなり、グラフェン、分散剤及び柔軟性結合剤であるピレン(pyrene)を含み、前記グラフェンとピレンがπ-π結合(π-π相互作用)(π-π interaction)しているバリアー層と、
前記バリアー層の上に形成されている第2高分子樹脂層を含む。
透湿度の変化率(%)=[(曲げた後の透湿度-曲げる前の透湿度)/(曲げる前の透湿度)]×100
(1)無欠陷グラフェン及びそれを含むバリアー層用の組成物の準備
黒鉛粉末を液相剥離(Liquid phase exfoliation)した。
図2は、本発明の実施例1によるフレキシブル二次電池用パッケージングの断面を概略的に示した図である。
図3は、本発明の実施例2によるフレキシブル二次電池用パッケージングの断面を概略的に示した図である。
図4は、比較例1によるフレキシブル二次電池用パッケージングの断面を概略的に示した図である。
図5は、比較例2によるフレキシブル二次電池用パッケージングの断面を概略的に示した図である。
図6は、比較例3によるフレキシブル二次電池用パッケージングの断面を概略的に示した図である。
(1)バリアー層用の組成物の準備
1重量%の黒鉛粉末をN-メチルピロリドン(NMP)に分散させて準備した分散液を60℃で120Wのエネルギーで5時間超音波処理してグラフェンを得た。この際、温度は、温度調節器と冷却コイルを用いて均一に60℃に維持した。
前記得られたバリアー層用の組成物を使用したことを除いては、実施例1と同様の方法でフレキシブル二次電池用パッケージングを製造した。
曲げる前後の透湿度(WVTR, Water Vapor Transmission Rate)評価
(1)曲げる前の透湿度評価
実施例1、2及び比較例1~4のフレキシブル二次電池用パッケージングを108mm×108mmの大きさに裁断した後、透湿度試験器(製造社:(株)Sejin Test、モデル:SJTM-014)の内部に各々装着して。その後、フレキシブル二次電池用パッケージングの一面には、水蒸気が含まれていない乾燥窒素ガスを流入させ、他面には水蒸気を流入させた。この際、フレキシブル二次電池用パッケージングの両面に流入するガスが混合しないように前記ガスが各々流入する二つの空間を互いに隔離した。一方、実験を行う間、温度は38℃、前記湿度は100%RHに設定して維持した。そして、24時間の間、湿度センサーを用いて乾燥窒素ガスを流入した前記一面で水蒸気の量を測定した。このような水蒸気の両を前記一面の面積で割り、24時間の間にパッケージングを透過した単位面積当たりの水蒸気の量を算出し、これを透湿度(WVTR)として評価した。その結果を表1に示した。
実施例1、2及び比較例1~4のフレキシブル二次電池用パッケージングに対して5R曲げ試験を100回繰り返した後、前述した条件でさらに透湿度を評価した。その結果を表1に示した。ここで、5R曲げ試験は、断面が半径5mmである円形のバー(bar)を用いてフレキシブル二次電池用パッケージングをバーの円周に沿って曲げと広げを1回にして所定の回数だけ繰り返す試験である。
11、110、210、310、410、510 第1高分子樹脂層
12、120、220、320、420、520 バリアー層
121、221 第1バリアー層
122、222 第2バリアー層
123 第3バリアー層
13、130、230、330、430、530 第2高分子樹脂層
141、142、143、241、242、341、342、441、442、541、542 接着層
Claims (10)
- 第1高分子樹脂層と、
前記第1高分子樹脂層の上に形成されており、水分及び気体を遮断し、30~999nmの厚さを有し、複数個の層からなり、グラフェン、分散剤及び柔軟性結合剤であるピレンを含み、前記グラフェンとピレンがπ-π結合しているバリアー層と、
前記バリアー層の上に形成されている第2高分子樹脂層を含む、フレキシブル二次電池用パッケージング。 - 前記第1高分子樹脂層が、ポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリエチレンイミン系樹脂、ポリエーテル系樹脂、シアノアクリレート系樹脂、有機チタニウム系樹脂、ポリウレタン系樹脂、ポリエーテルウレタン系樹脂、エポキシ系樹脂、イミド系樹脂、イソシアネート系樹脂、シリコーン系樹脂またはこれらの二種以上を含むことを特徴とする、請求項1に記載のフレキシブル二次電池用パッケージング。
- 前記グラフェン100重量部を基準として、前記分散剤の含量が0.01~1重量部であり、前記ピレンの含量が0.1~2重量部であることを特徴とする、請求項1または2に記載のフレキシブル二次電池用パッケージング。
- 前記グラフェンが無欠陷グラフェンであることを特徴とする、請求項1から3のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- 前記分散剤が、CnH2n+1R(RがNH3、OHまたはCOOHであり、20≦n≦30)であることを特徴とする、請求項1から4のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- 前記バリアー層の厚さが30~900nmであることを特徴とする、請求項1から5のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- 前記バリアー層の層数が3~5個であることを特徴とする、請求項1から6のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- 前記第2高分子樹脂層が、ポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリエチレンイミン系樹脂、ポリエーテル系樹脂、シアノアクリレート系樹脂、有機チタニウム系樹脂、ポリウレタン系樹脂、ポリエーテルウレタン系樹脂、エポキシ系樹脂、イミド系樹脂、イソシアネート系樹脂、シリコーン系樹脂またはこれらの二種以上を含むことを特徴とする、請求項1から7のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- 前記バリアー層と前記第1高分子樹脂層とが接する面、及び前記バリアー層と前記第2高分子樹脂層とが接する面のうち少なくとも一面に、接着層がさらに形成されることを特徴とする、請求項1から8のいずれか一項に記載のフレキシブル二次電池用パッケージング。
- フレキシブル電極組立体及び前記フレキシブル電極組立体を内蔵するパッケージングを含むフレキシブル二次電池であって、
前記パッケージングは、請求項1から9のいずれか一項に記載のフレキシブル二次電池用パッケージングである、フレキシブル二次電池。
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JP2018048822A (ja) * | 2016-09-20 | 2018-03-29 | 株式会社東芝 | 分子検出装置 |
KR20190086006A (ko) * | 2016-12-29 | 2019-07-19 | 베이징 퉁수 카본 어드밴스드 머테리얼스 테크놀로지 씨오., 엘티디. | 알루미늄 - 플라스틱 패키징 필름 및 이를 사용한 리튬 이온 전지 |
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KR20210063128A (ko) | 2021-06-01 |
HUE062952T2 (hu) | 2023-12-28 |
EP4044328B1 (en) | 2023-08-30 |
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JP7355936B2 (ja) | 2023-10-03 |
US20220393274A1 (en) | 2022-12-08 |
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CN114747068B (zh) | 2024-05-10 |
ES2960197T3 (es) | 2024-03-01 |
EP4044328A1 (en) | 2022-08-17 |
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WO2021101343A1 (ko) | 2021-05-27 |
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