JP2018137416A - 導電性ペーパー電極、電気化学キャパシタ及びその製造方法 - Google Patents
導電性ペーパー電極、電気化学キャパシタ及びその製造方法 Download PDFInfo
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- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
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Abstract
【解決手段】導電性ペーパー電極1であって、紙10とカーボン粉層12とグラファイト層14とナノ構造層16とを有する。カーボン粉層12は、紙10の上に位置する。カーボン粉層は、写真印刷によるカーボン粉層を有することが好ましい。グラファイト層14は、カーボン粉層12の上に位置する。ナノ構造層16は、グラファイト層14の上に位置する。電気化学キャパシタは、2つの導電性ペーパー電極と、それらの間に挿入配置する電解質と、を有する。
【選択図】図1
Description
Csp=Qm/ΔV (1)
Csp=IΔt/ΔVw (2)
QmはCVから積分した特定ボルタンメトリー電荷(Mn酸化物量に基づく)であり、ΔVは走査範囲(すなわち0.8V×2)であり、Iは加えた電流密度(2A/g)であり、wはMn酸化物の量であり、Δtは放電サイクル期間である。2つの電極系に基づく充放電曲線により、Cspは対称スーパーキャパシタの比容量であり、エネルギー密度(E)と出力密度(P)は方程式(3)と(4)に基づき、時間−電位曲線から計算する。
E=1/2CspΔV2 (3)
P=E/Δt (4)
Δtは放電時間であり、ΔVは電池電圧(すなわち2.0V)である。
10 紙
12 カーボン粉層
14 グラファイト層
16 ナノ構造層
18 エネルギー貯蔵層
30 電解質
50 電気化学キャパシタ
Claims (20)
- 紙と、
該紙の上に位置するカーボン粉層と、
該カーボン粉層の上に位置するグラファイト層と、
該グラファイト層の上に位置するナノ構造層と、を有する導電性ペーパー電極。 - 該カーボン粉層が写真印刷のカーボン粉層を有する請求項1記載の導電性ペーパー電極。
- 該グラファイト層が織目表面を有する請求項1記載の導電性ペーパー電極。
- 該ナノ構造層が複数個の導電性ナノチューブを有する請求項1記載の導電性ペーパー電極。
- 該ナノ構造層がニッケル層を含む請求項1記載の導電性ペーパー電極。
- 該ナノ構造層の上に位置するエネルギー貯蔵層をさらに有する請求項1記載の導電性ペーパー電極。
- 該エネルギー貯蔵層の材料が金属酸化物または導電性ポリマーを有する請求項6記載の導電性ペーパー電極。
- 該金属酸化物が、酸化マンガン、酸化コバルト、酸化ニッケル、酸化バナジウム、またはそれらの組み合わせを含む請求項7記載の導電性ペーパー電極。
- 該導電性ポリマーが、ポリピロール(Polypyrrole、PPy)、ポリ(3,4−エチレンジオキシチオフェン)(poly(3,4−ethylenedioxythiophene)、PEDOT)、ポリアニリン(Polyaniline、PANI)、またはそれらの組み合わせを含む請求項7記載の導電性ペーパー電極。
- 該導電性ペーパー電極が可撓性(flexible)である請求項1記載の導電性ペーパー電極。
- 2つの請求項1記載の導電性ペーパー電極であって、該導電性ペーパー電極のそれぞれは、導電性ナノ構造上にエネルギー貯蔵層をさらに有する、2つの請求項1記載の導電性ペーパー電極と、
該導電性ペーパー電極の該エネルギー貯蔵層の間に挿入配置される電解質と、
を有する電気化学キャパシタ。 - 該電解質が、
少なくとも一つのアシルアミノ基を有する有機化合物、及びリチウム塩、を含むリチウム含有準イオン液体と、
粘着剤と、
を有する請求項11記載の電気化学キャパシタ。 - 該有機化合物が、アセトアミド、尿素、メチル尿素(methylurea、NMU)、2−オキサゾリジノン(2−oxazolidinone、OZO)、エチレン尿素(ethyleneurea)、1,3−ジメチル尿素(1,3−dimethylurea、DMU)、またはそれらの組み合わせを含み、該リチウム塩が、LiXであり、XがClO4 −、SCN−、PF6 −、B(C2O4)2 −、N(SO2CF3)2 −、CF3SO3 −、またはそれらの組み合わせを含み、該粘着剤がポリビニルアルコール(Polyvinyl alcohol、PVA)を含む、請求項12記載の電気化学キャパシタ。
- 該リチウム含有準イオン液体の該粘着剤に対する重量比が約1:4.5から約4:1の間である請求項12記載の電気化学キャパシタ。
- 紙を提供するステップと、
カーボン粉層を該紙の上に形成するステップと、
グラファイト層を該カーボン粉層の上に形成するステップと、
ナノ構造層を該グラファイト層の上に形成するステップと、
を有する導電性ペーパー電極の製造方法。 - 該カーボン粉層が該紙の上に写真印刷されるものである請求項15記載の製造方法。
- グラファイト含有道具で該カーボン粉層上に該グラファイト層を描く請求項15記載の製造方法。
- 該カーボン粉層の一表面上に単一方向に該グラファイト層を描く請求項17記載の製造方法。
- エネルギー貯蔵層を該ナノ構造層の上に形成するステップをさらに有する請求項15記載の製造方法。
- 該エネルギー貯蔵層の材料が金属酸化物または導電性ポリマーを含む請求項19記載の製造方法。
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