JP2018060778A - 蓄電装置 - Google Patents
蓄電装置 Download PDFInfo
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- JP2018060778A JP2018060778A JP2017151486A JP2017151486A JP2018060778A JP 2018060778 A JP2018060778 A JP 2018060778A JP 2017151486 A JP2017151486 A JP 2017151486A JP 2017151486 A JP2017151486 A JP 2017151486A JP 2018060778 A JP2018060778 A JP 2018060778A
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- Prior art keywords
- negative electrode
- active material
- positive electrode
- power storage
- material layer
- Prior art date
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- 239000011780 sodium chloride Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
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- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- DZKDPOPGYFUOGI-UHFFFAOYSA-N tungsten(iv) oxide Chemical compound O=[W]=O DZKDPOPGYFUOGI-UHFFFAOYSA-N 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
【解決手段】セパレータと、第1の電極と、第2の電極と、電解液と、を有し、セパレータは、第1の電極と第2の電極との間に設けられ、第1の電極は、活物質層と、集電体と、を有し、第1の電極は、集電体を挟む一対の被膜を有し、活物質層は、集電体と接する領域を有し、活物質層は、一対の被膜の少なくとも一つと接する領域を有し、電解液は、アルカリ金属塩と、イオン液体と、を有する蓄電装置。負極活物質層は黒鉛を有し、正極活物質層はLiFePO4を有し、電解液は1−ブチル−3−メチルイミダゾリウムビス(フルオロスルホニル)アミドとリチウムビス(フルオロスルホニル)アミドを有する蓄電装置
【選択図】なし
Description
である。
本実施の形態では、本発明の一態様に係る蓄電装置の構成の一例を説明する。
ここで、本発明の一態様である蓄電装置の一例について、図面を用いて説明する。まず、図1を用いて蓄電装置の負極および電解液の間で起こる反応について説明する。図1に示す負極506は、負極集電体504と、負極集電体504を挟んで向かい合う負極活物質層505aおよび負極活物質層505bと、を有する。また、負極活物質層505aに接する被膜515aと、負極活物質層505bに接する被膜515bと、を有する。
ここで、本発明の一態様を用いた蓄電装置500の一例について、図5を用いて説明する。図5(A)に、蓄電装置500の一例として、薄型の蓄電池の形態を示す。また、図6(A)に図5に示す一点鎖線A1−A2における断面を、また図6(B)に図5に示す一点鎖線B1−B2における断面をそれぞれ示す。ここで蓄電装置500は、正極503、負極506、セパレータ507、外装体509、正極リード電極510および負極リード電極511を有する。
次に、蓄電装置500が薄型の蓄電池である場合について、その作製方法の一例を、図面を用いて説明する。
本実施の形態では、本発明の一態様である蓄電装置に用いられる非水溶媒について説明する。
本実施の形態では、本発明の一態様に用いることのできる正極および負極の具体的な構成と作製方法を説明する。
まず、負極506の作製方法について説明する。
次に、正極503の作製方法について説明する。正極503の作製方法については、負極506の作製方法を参照することができる。
本実施の形態では、本発明の一態様を用いた蓄電装置の様々な形態について説明する。
次に、図13乃至図14に、本発明の一態様を用いた蓄電装置である、捲回体を用いた蓄電池の構成例を示す。図13に示す捲回体993は、負極994と、正極995と、セパレータ996と、を有する。
次に、図13乃至図15と同様に捲回体を用いた蓄電装置の一例として、円筒型の蓄電池を示す。円筒型の蓄電池について、図16を参照して説明する。円筒型の蓄電池600は図16(A)に示すように、上面に正極キャップ(電池蓋)601を有し、側面および底面に電池缶(外装缶)602を有している。これら正極キャップと電池缶(外装缶)602とは、ガスケット(絶縁パッキン)610によって絶縁されている。
次に蓄電装置の一例として、本発明の一態様を用いた蓄電装置である、コイン型の蓄電池の一例を、図17を用いて説明する。図17(A)はコイン型(単層偏平型)の蓄電池の外観図であり、図17(B)および図17(C)は、その断面図の例を示す。
また、蓄電システムの構造例について、図18、図19、図20を用いて説明する。ここで蓄電システムとは、例えば、蓄電装置を搭載した機器を指す。本実施の形態で説明する蓄電システムは、本発明の一態様を用いた蓄電装置である、蓄電池を有する。
本実施の形態では、本発明の一態様を用いた蓄電装置である、可撓性を有する蓄電池を電子機器に実装する例について説明する。
本実施の形態では、蓄電装置を搭載することのできる電子機器の一例を示す。
本実施の形態では、車両に蓄電装置を搭載する例を示す。
まず、正極および負極の作製について説明する。
次に、薄型の蓄電池を作製した。薄型の蓄電池の作製方法を図27のフローを用いて説明する。まず、できあがった正極および負極を切断した。また、セパレータを切断した(Step1)。
作製した蓄電池の充放電サイクルを評価した。なお、評価温度は100℃で行った。充電条件4Vを上限として定電流充電を行った。また、放電条件は、2Vを下限として定電流放電を行った。充放電を概略0.3Cのレートで行った。なお、レートの算出は正極活物質重量あたり170mA/gの電流値を1Cとした。
集電体の両面に活物質層を形成した蓄電池の放電サイクル特性では、いずれの条件もサイクルの途中で容量が大きく低下する変曲点がみられるまでのサイクル数を増やすことができた。また、LiFSAの濃度が大きい方が放電容量の劣化が小さいことが確認できた。
また、薄型の蓄電池Aの温度条件振りによる放電特性を評価した。測定温度は、25℃、10℃、0℃、−10℃、および−25℃の温度条件振りとした。また、該測定の充電方式は、定電流方式を採用し、概略0.1Cのレートで定電流充電を行った後、概略0.2Cのレートで放電した。なお、充電時の温度は、25℃とした。
ここで、薄型の蓄電池Aにおける負極の集電体の片面のみに活物質層が設けられている蓄電池と負極の集電体の両面に活物質層が設けられている蓄電池を解体し、観察を行った。解体は、アルゴン雰囲気下で行った。解体後に取り出した負極を重アセトニトリルで洗浄した後、負極を脱水アセトニトリルで洗浄し、真空引きしてアセトニトリルを乾燥させた。
観察結果を図31に示す。
試料1は、電解液として、溶媒にBMI−FSAを用い、電解質としてLiFSAを用いた。LiFSAをBMI−FSAに溶解させ、LiFSAの濃度が1mol/kgのイオン液体電解液を準備した。
試料2は、電解液として、溶媒にBMI−FSAを用い、電解質としてLiFSAを用いた。LiFSAをBMI−FSAに溶解させ、LiFSAの濃度が1.8mol/kgのイオン液体電解液を準備した。
試料3は、電解液として、溶媒にエチレンカーボネート(EC)と、ジエチルカーボネート(DEC)と、をそれぞれ体積比1:1の割合で混合された混合液体を用い、電解質として六フッ化リン酸リチウム(略称:LiPF6)を用いた。LiPF6を混合液体に溶解させ、LiPF6の濃度が0.87mol/kgの有機電解液を準備した。
さらに、電解液として、溶媒にエチレンカーボネート(EC)と、ジエチルカーボネート(DEC)と、をそれぞれ体積比3:7の割合で混合された混合液体を用い、電解質として六フッ化リン酸リチウム(略称:LiPF6)を用いた。LiPF6を混合液体に溶解させ、LiPF6の濃度が0.87mol/kgの有機電解液を試料4として準備した。
まず、先の実施の形態の図5で示した薄型の蓄電池を作製した。
次に、薄型の蓄電池を作製するためにまず、正極、負極、セパレータを切断した。セパレータは、切断後、半分に折り、2辺を固定することで、袋状とした。
118 接合部
119 導入口
261 領域
262 領域
281 タブ領域
282 タブ領域
300 蓄電池
301 正極缶
302 負極缶
303 ガスケット
304 正極
305 正極集電体
306 正極活物質層
307 負極
308 負極集電体
309 負極活物質層
310 セパレータ
500 蓄電装置
501 正極集電体
502 正極活物質層
502a 正極活物質層
502b 正極活物質層
503 正極
503a 正極
504 負極集電体
505 負極活物質層
505a 負極活物質層
505b 負極活物質層
506 負極
506a 負極
507 セパレータ
508 電解液
509 外装体
510 正極リード電極
511 負極リード電極
512 接合部
513 湾曲部
514 接合部
515 被膜
515a 被膜
515b 被膜
521 グラフェン
522 正極活物質
600 蓄電池
601 正極キャップ
602 電池缶
603 正極端子
604 正極
605 セパレータ
606 負極
607 負極端子
608 絶縁板
609 絶縁板
611 PTC素子
612 安全弁機構
900 回路基板
910 ラベル
911 端子
912 回路
913 蓄電池
914 アンテナ
915 アンテナ
916 層
917 層
918 アンテナ
919 端子
920 表示装置
921 センサ
922 端子
951 端子
952 端子
981 フィルム
982 フィルム
990 蓄電池
991 外装体
992 外装体
993 捲回体
994 負極
995 正極
996 セパレータ
997 リード電極
998 リード電極
1122 充電器
1123 充電器
7100 携帯表示装置
7101 筐体
7102 表示部
7103 操作ボタン
7104 蓄電装置
7200 携帯情報端末
7201 筐体
7202 表示部
7203 バンド
7204 バックル
7205 操作ボタン
7206 入出力端子
7207 アイコン
7300 表示装置
7304 表示部
7400 携帯電話機
7401 筐体
7402 表示部
7403 操作ボタン
7404 外部接続ポート
7405 スピーカ
7406 マイク
7407 蓄電装置
7408 リード電極
7409 集電体
8000 表示装置
8001 筐体
8002 表示部
8003 スピーカ部
8004 蓄電装置
8021 充電装置
8022 ケーブル
8024 蓄電装置
8100 照明装置
8101 筐体
8102 光源
8103 蓄電装置
8104 天井
8105 側壁
8106 床
8107 窓
8200 室内機
8201 筐体
8202 送風口
8203 蓄電装置
8204 室外機
8300 電気冷凍冷蔵庫
8301 筐体
8302 冷蔵室用扉
8303 冷凍室用扉
8304 蓄電装置
8400 自動車
8401 ヘッドライト
8500 自動車
9600 タブレット型端末
9625 スイッチ
9626 スイッチ
9627 電源スイッチ
9628 操作スイッチ
9629 留め具
9630 筐体
9630a 筐体
9630b 筐体
9631 表示部
9631a 表示部
9631b 表示部
9632a 領域
9632b 領域
9633 太陽電池
9634 充放電制御回路
9635 蓄電体
9636 DCDCコンバータ
9637 コンバータ
9638 操作キー
9639 ボタン
9640 可動部
Claims (2)
- 正極と、負極と、セパレータと、電解液とを有し、
前記正極は、正極活物質層と、正極集電体とを有し、
前記負極は、負極活物質層と、負極集電体とを有し、
前記正極集電体は、片面に前記正極活物質層を有し、
前記負極集電体は、両面に前記負極活物質層を有し、
前記セパレータは、前記正極と前記負極との間に位置し、
前記負極活物質層は、黒鉛を有し、
前記正極活物質層は、LiFePO4を有し、
前記電解液は、1−ブチル−3−メチルイミダゾリウムビス(フルオロスルホニル)アミドと、リチウムビス(フルオロスルホニル)アミドとを有することを特徴とする蓄電装置。 - 請求項1において、
前記正極は、前記負極と重なり、且つ、前記負極の端部は前記正極の端部と揃っている、または、前記負極の端部は前記正極の端部よりも内側に位置することを特徴とする蓄電装置。
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CN108232295B (zh) * | 2017-12-21 | 2020-11-17 | 北京科技大学 | 一种锂空气电池用离子液体基电解液及其锂空气电池体系 |
US10468674B2 (en) * | 2018-01-09 | 2019-11-05 | South Dakota Board Of Regents | Layered high capacity electrodes |
JP7231188B2 (ja) * | 2018-10-02 | 2023-03-01 | エリーパワー株式会社 | リチウムイオン電池の製造方法 |
CN113196545A (zh) * | 2018-12-28 | 2021-07-30 | 松下知识产权经营株式会社 | 全固体电池和全固体电池的制造方法 |
CN111435730B (zh) * | 2019-01-14 | 2022-06-24 | 谢淑惠 | 在以铅为基础的基材上形成铅碳复合材界面层的方法 |
CN112151862B (zh) * | 2020-09-25 | 2022-06-14 | 东北师范大学 | 卤化取代咪唑作为氧化还原媒介的应用、电解液和锂氧电池 |
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