Carbon nanowalls thin films as nanostructured electrode materials in vanadium redox flow batteries

被引：85

作者：

Gonzalez, Zoraida ^{[1
]}

Vizireanu, Sorin ^{[2
]}

Dinescu, Gheorghe ^{[2
]}

Blanco, Clara ^{[1
]}

Santamaria, Ricardo ^{[1
]}

机构：

[1] INCAR CSIC, Inst Nacl Carbon, Oviedo 33080, Spain

[2] Natl Inst Laser Plasma & Radiat Phys, Magurele 077125, Romania

来源：

NANO ENERGY | 2012年 / 1卷 / 06期

关键词：

Carbon nanowalls thin film; Cyclic voltammetry; Electrical conductivity; Surface activity; Vanadium redox flow batteries; CHEMICAL-VAPOR-DEPOSITION; NANOTUBES; GROWTH; FELT;

D O I：

10.1016/j.nanoen.2012.07.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three carbon nanowalls (CNWs) thin films, synthesized by Radiofrequency Plasma Enhanced Chemical Vapor Deposition (RF-PECVD) using different processing parameters, are studied as electrode materials in the positive half-cell of a Vanadium Redox Flow Battery (VRFB). These 2D-networks of interconnected graphenes exhibit an excellent electrochemical performance towards the V(IV)/V(V) redox couple in terms of a low overpotential and fast electron transfer kinetics. This can be attributed to certain specific features of CNWs such as the arrangement of the graphene planes perpendicular to the substrate, thus facilitating the electron transfer from the substrate and resulting in a large amount of exposed reactive graphitic edge planes. Repetitive cyclic voltammetry measurements, at various scan rates, together with SEM images evidence the long term stability of these materials. The obtained results represent a significant step forward in the development of highly effective VRFB electrode materials. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：833 / 839

页数：7

共 33 条

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