Electrochemical characterization of carbon nanotubes for hydrogen storage

被引：37

作者：

Lombardi, I ^{[1
]}

Bestetti, M ^{[1
]}

Mazzocchia, C ^{[1
]}

Cavallotti, PL ^{[1
]}

Ducati, U ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20131 Milan, Italy

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 05期

关键词：

D O I：

10.1149/1.1669341

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical behavior and the reversible hydrogen storage capacity of multiwalled carbon nanotubes (MWNTs) have been investigated both in alkaline (6 M KOH) and acid (0.3 M H2SO4) electrolytic solutions by cyclic voltammetry and constant current charge/discharge measurements. Different purification treatments were performed on as-prepared MWNTs to improve hydrogen uptake. About 0.1 wt % of hydrogen was reversibly stored in MWNTs after nitric acid treatment. Vacuum annealing (950degreesC, 1 h) of MWNTs lowered the electrochemical hydrogen uptake. Finally, electrochemical oxidation of MWNTs at high potentials allowed an increase in hydrogen charge capacity to 0.3 wt %. (C) 2004 The Electrochemical Society.

引用

页码：A115 / A118

页数：4

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