A step forward into hierarchically nanostructured materials for high performance micro-supercapacitors: Diamond-coated SiNW electrodes in protic ionic liquid electrolyte

被引：37

作者：

Aradilla, David ^{[1
,2
,3
]}

Gao, Fang ^{[4
]}

Lewes-Malandrakis, Georgia ^{[4
]}

Mueller-Sebert, Wolfgang ^{[4
]}

Gaboriau, Dorian ^{[1
,2
,3
,5
,6
]}

Gentile, Pascal ^{[5
,6
]}

Iliev, Boyan ^{[7
]}

Schubert, Thomas ^{[7
]}

Sadki, Said ^{[1
,2
,3
]}

Bidan, Gerard ^{[1
,2
,3
]}

Nebel, Christoph E. ^{[4
]}

机构：

[1] Univ Grenoble Alpes, INAC SPRAM, F-38000 Grenoble, France

[2] CNRS, SPRAM, F-38000 Grenoble, France

[3] CEA, INAC SPRAM, F-38000 Grenoble, France

[4] Fraunhofer Inst Appl Solid State Phys IAF, Freiburg, Germany

[5] Univ Grenoble Alpes, INAC SP2M, F-38000 Grenoble, France

[6] CEA, INAC SP2M, F-38000 Grenoble, France

[7] IOLITEC Ion Liquids Technol GmbH, Salzstr 184, D-74076 Heilbronn, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2016年 / 63卷

关键词：

Supercapacitors; Ionic liquid; Diamond; Silicon nanowires; SILICON-CARBIDE NANOWIRES; ELECTROCHEMICAL CHARACTERIZATION; DOPED DIAMOND; CARBON ONIONS; ENERGY; SURFACE; NANOTUBES; GRAPHENE; STORAGE; FOAM;

D O I：

10.1016/j.elecom.2015.12.008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Silicon nanowires (SiNWs) were successfully coated by uniform, adherent and homogenous ultra-thin crystalline diamond films through microwave enhanced chemical vapor deposition (MWCVD). The as-grown functionalized nanowires were employed as electrodes in a symmetric micro-supercapacitor (MSC) using a protic ionic liquid electrolyte [triethylammonium bis(trifluoromethylsulfonyl)imide; Et3NH TFSI]. The electrochemical performance of the device delivered a specific capacitance of 1.5 mF cm(-2) and a power density of 25 mW cm(-2) using an enlarged cell voltage of 4 V. Furthermore, a remarkable cycling stability was evaluated after 1 . 10(6) galvanostatic cycles at a high current density of 10 mA cm(-2) with an excellent capacitive behavior. These results confirm that diamond-coated SiNW micro-supercapacitors exhibit very promising performances dealing with MSCs based on CVD-grown SiNWs. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：34 / 38

页数：5

共 39 条

[1]

Hierarchical nanocomposite electrodes based on titanium nitride and carbon nanotubes for micro-supercapacitors [J].