JP4720999B2 - 蓄電デバイス - Google Patents
蓄電デバイス Download PDFInfo
- Publication number
- JP4720999B2 JP4720999B2 JP2005517909A JP2005517909A JP4720999B2 JP 4720999 B2 JP4720999 B2 JP 4720999B2 JP 2005517909 A JP2005517909 A JP 2005517909A JP 2005517909 A JP2005517909 A JP 2005517909A JP 4720999 B2 JP4720999 B2 JP 4720999B2
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- JP
- Japan
- Prior art keywords
- storage device
- positive electrode
- chemical formula
- nitroxyl
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
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- 125000001424 substituent group Chemical group 0.000 description 1
- 125000005156 substituted alkylene group Chemical group 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
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- 239000011593 sulfur Chemical group 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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Description
本発明の蓄電デバイスは、酸化状態において下記化学式(I)で示されるニトロキシルカチオン部分構造をとり、還元状態において下記化学式(II)で示されるニトロキシルラジカル部分構造をとるニトロキシル高分子を正極中に含有し、その2つの状態間で電子の授受を行う下記反応式(B)で示される反応を正極の電極反応として用いる蓄電デバイスであって、炭素を主成分とする導電補助層をアルミニウム電極上に一体化形成した正極用集電体を用いることを特徴としている。
ニトロキシル高分子を活物質とする正極と、アルミニウム電極との間に挟まれた導電補助層が、有機高分子化合物と金属集電体とのポテンシャル障壁を小さくする効果があるため、蓄電デバイスの内部抵抗が小さくなる。
2 絶縁パッキン
3 負極
4 セパレータ
5 正極
6 正極用集電体
7 正極用金属集電体
8 導電補助層
9 アルミニウム
次に、本発明の実施の形態について図面を参照して詳細に説明する。
次に図1を参照して、第1の実施の形態の製造方法を説明する。
上記第1の実施の形態において、コイン型であった蓄電デバイスの形状を、従来公知の形状にすることができる。蓄電デバイス形状の例としては、電極の積層体あるいは巻回体を、金属ケース、樹脂ケース、あるいはラミネートフィルム等によって封止したものが挙げられる。また外観としては、円筒型、角型、コイン型、およびシート型等が挙げられる。
還流管を付けた100mlナスフラスコ中に、2,2,6,6−テトラメチルピペリジン メタクリレート モノマー20g(0.089mol)を入れ、乾燥テトラヒドロフラン80mlに溶解させた。そこへ、アゾビスイソブチロニトリル(AIBN)0.29g(0.00178mol)(モノマー/AIBN=50/l)を加え、アルゴン雰囲気下75〜80℃で攪拌した。6時間反応後、室温まで放冷した。へキサン中でポリマーを析出させて濾別し、減圧乾燥してポリ(2,2,6,6−テトラメチルピペリジン メタクリレート)18g(収率90%)を得た。次に、得られたポリ(2,2,6,6−テトラメチルピペリジン メタクリレート)10gを乾操ジクロロメタン100mlに溶解させた。ここへm−クロロ過安息香酸15.2g(0.088mol)のジクロロメタン溶液100mlを室温にて攪拌しながら1時間かけて滴下した。さらに6時間攪拌後、沈殿したm−クロロ安息香酸を濾別して除き、濾液を炭酸ナトリウム水溶液および水で洗浄後、ジクロロメタンを留去した。残った固形分を粉砕し、得られた粉末をジエチルカーボネート(DEC)で洗浄し、減圧下乾燥させて、下記化学式(16)で示されるポリ(2,2,6,6−テトラメチルピペリジノキシ メタクリレート)(PTMA)7.2gを得た(収率68.2%、茶褐色粉末)。得られた高分子の構造はIRで確認した。また、GPCにより測定した結果、重量平均分子量Mw=89000、分散度Mw/Mn=3.30という値が得られた。ESRスペクトルにより求めたスピン濃度は2.26×1021spin/gであった。これはポリ(2,2,6,6−テトラメチルピペリジン メタクリレート)のN−H基が、N−Oラジカルへ90%転化されると仮定した場合のスピン濃度と一致する。
小型ホモジナイザ容器に純水20gを測り取り、テフロン(登録商標)粒子およびセルロースからなるバインダー272mgを加えて3分間攪拌し完全に溶解させた。そこにアセチレンブラック2.0gを加え、15分間攪拌してスラリーを得た。得られたスラリーを厚さ20ミクロンのアルミニウム板上に薄く塗布し、100℃で乾燥させて導電補助層を作製した。導電補助層の厚みは10ミクロンであった。このようにして、炭素を主成分とする導電補助層とアルミニウム板とが一体化された正極用集電体が得られた。
正極活物質として合成した化学式(17)のポリアクリレートを使用する以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質として合成した化学式(18)のポリメタクリレートを使用する以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質として合成した化学式(19)のポリメタクリレートを使用する以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
負極としてグラファイト電極板を使用する以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を156mgとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を350mgとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を933mgとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を1400mgとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を2100mgとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
アルミニウム板上に形成する導電補助層の厚みを30ミクロンとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
アルミニウム板上に形成する導電補助層の厚みを5ミクロンとする以外は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
アルミニウム電極上に、カーボン蒸着装置を用いてアモルファス状の炭素を蒸着させ、導電補助層を作製した。導電補助層の厚みは30ナノメートルであった。それ以降は、実施例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
小型ホモジナイザ容器にN−メチルピロリドン20gを測り取り、ポリフッ化ビニリデン400mgを加えて30分間攪拌し完全に溶解させた。そこに、正極活物質として合成した化学式(16)のポリメタクリレート1.0gを加え5分間攪拌した。全体がオレンジ色で均一になったら、アセチレンブラック600mgを加え15分間攪拌した。できたサンプルを脱泡してスラリーを得た。得られたスラリーを、アルミニウム板上に直接塗布し、125℃で乾燥させて正極を作製した。正極の厚みは80ミクロンであった。
正極活物質として合成した化学式(17)のポリアクリレートを使用する以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質として合成した化学式(18)のポリメタクリレートを使用する以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質として合成した化学式(19)のポリメタクリレートを使用する以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
負極としてグラファイト電極板を使用する以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を156mgとする以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を350mgとする以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を933mgとする以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を1400mgとする以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
正極活物質に混合するアセチレンブラックの量を2100mgとする以外は、比較例1と同様の方法で実施し、コイン型蓄電デバイスを得た。
Claims (5)
- 前記正極中にさらに導電性付与剤を含有し、前記正極における該導電性付与剤の含有率が50重量%以下であることを特徴とする請求項1記載の蓄電デバイス。
- 前記導電性付与剤の含有率が40重量%以下であることを特徴とする請求項2記載の蓄電デバイス。
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JP4530133B2 (ja) * | 2004-02-16 | 2010-08-25 | 日本電気株式会社 | 蓄電デバイス |
CN1741214A (zh) * | 2005-07-15 | 2006-03-01 | 复旦大学 | 有机聚合物自由基/碳复合材料为正极的电化学超电容器 |
JP5034261B2 (ja) * | 2006-02-23 | 2012-09-26 | 日本電気株式会社 | 金属リチウム二次電池 |
JP5240808B2 (ja) * | 2006-02-24 | 2013-07-17 | 国立大学法人大阪大学 | 分子結晶性二次電池 |
US8728662B2 (en) | 2006-06-06 | 2014-05-20 | Nec Corporation | Process for producing polyradical compound and battery cell |
JP4943106B2 (ja) * | 2006-09-26 | 2012-05-30 | 住友精化株式会社 | (メタ)アクリル酸系架橋共重合体の製造方法 |
FR2912554A1 (fr) * | 2007-02-12 | 2008-08-15 | Arkema France | Electrode comprenant au moins un nitroxyde et des nanotubes de carbone |
US8617744B2 (en) | 2009-06-02 | 2013-12-31 | Nec Corporation | Electricity storage device |
US20120107685A1 (en) * | 2009-06-26 | 2012-05-03 | Takumi Tamaki | Electropostive plate, battery, vehicle battery-mounted device, and electropositive plate manufacturing method |
US20120171561A1 (en) * | 2009-09-18 | 2012-07-05 | Nec Corporation | Polymer radical material-activated carbon-conductive material composite, method for producing conductive material composite, and electricity storage device |
JP2012009276A (ja) * | 2010-06-24 | 2012-01-12 | Toyota Motor Corp | リチウムイオン二次電池およびその製造方法 |
KR101256065B1 (ko) * | 2011-06-02 | 2013-04-18 | 로베르트 보쉬 게엠베하 | 리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 |
FR2982083B1 (fr) * | 2011-11-02 | 2014-06-27 | Fabien Gaben | Procede de realisation de films minces d'electrolyte solide pour les batteries a ions de lithium |
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JP6720350B2 (ja) | 2016-06-02 | 2020-07-08 | エボニック オペレーションズ ゲーエムベーハー | 電極材料の製造方法 |
CN109312018B (zh) | 2016-09-06 | 2021-04-20 | 赢创运营有限公司 | 改善仲胺基团氧化的方法 |
FR3080957B1 (fr) | 2018-05-07 | 2020-07-10 | I-Ten | Electrodes mesoporeuses pour dispositifs electrochimiques en couches minces |
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JP2002117854A (ja) * | 2000-10-06 | 2002-04-19 | Nec Corp | 二次電池およびその製造方法 |
JP2002117855A (ja) * | 2000-10-06 | 2002-04-19 | Nec Corp | 二次電池およびその製造方法 |
JP2002170568A (ja) * | 2000-12-01 | 2002-06-14 | Nec Corp | 電 池 |
JP2002304996A (ja) * | 2001-04-03 | 2002-10-18 | Nec Corp | 蓄電デバイス |
JP2003022809A (ja) * | 2001-07-09 | 2003-01-24 | Nec Corp | 電池および電池用電極 |
JP2003242980A (ja) * | 2002-02-18 | 2003-08-29 | Nec Corp | 電極活物質、電極および電池 |
JP2005097409A (ja) * | 2003-09-24 | 2005-04-14 | Mitsubishi Gas Chem Co Inc | 安定ラジカルを持つ高分子化合物の製造方法 |
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WO2005078830A1 (ja) | 2005-08-25 |
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