Selective deposition of nanostructured ruthenium oxide using Tobacco mosaic virus for micro-supercapacitors in solid Nafion electrolyte

JOURNAL OF POWER SOURCES

卷:293

Article

Gnerlich, Markus¹  Ben-Yoav, Hadar^1,2  Culver, James N.^3,4  Ketchum, Douglas R.⁵  Ghodssi, Reza^1,2 

[1] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA

[2] Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA

[3] Univ Maryland, Inst Biosci & Biotechnol Res, College Pk, MD 20742 USA

[4] Univ Maryland, Dept Plant Sci & Landscape Architecture, College Pk, MD 20742 USA

[5] Lab Phys Sci, College Pk, MD 20742 USA

关键词: Supercapacitor;    Ruthenium oxide;    Tobacco mosaic virus;    Electroless deposition;    Self-assembly;    Nafion;   

DOI  :  10.1016/j.jpowsour.2015.05.053

来源: Elsevier

【 摘 要 】

A three-dimensional micro-supercapacitor has been developed using a novel bottom-up assembly method combining genetically modified Tobacco mosaic virus (TMV-1Cys), photolithographically defined micropillars and selective deposition of ruthenium oxide on multi-metallic microelectrodes. The three-dimensional microelectrodes consist of a titanium nitride current collector with two functionalized areas: (1) gold coating on the active electrode area promotes TMV-1Cys adhesion, and (2) sacrificial nickel pads dissolve in ruthenium tetroxide plating solution to produce ruthenium oxide on all electrically connected areas. The microfabricated electrodes are arranged in an interdigitated pattern, and the capacitance per electrode has been measured as high as 203 mF cm(-2) with solid Nafion electrolyte. The process integration of bio-templated ruthenium oxide with microfabricated electrodes and solid electrolyte is an important advance towards the energy storage needs of mass produced self-sufficient micro-devices. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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