Electrochemical Storage Hydrogen of the Aligned Multi-walled Carbon Nanotubes

Abstract

Abstract: The mechanism of electrochemical storage hydrogen in the aligned multi-walled carbon nanotubes(AMWCNTs) was investigated by using charge-discharge test, cyclic voltammetry(CV) and electrochemical impedance spectra. A high discharge capacity of 1 162 mA·h/g of the AMWCNTs-Cu was obtained at a current density of 1 500 mA/g. The high capacity of the AMWCNTs is related to the space structure. The addition of copper power into the AMWCNTs is advantageous to increase the electro-catalyzed reaction areas of the AMWCNTs electrode and improve its electrochemical activity. The copper powder could also accelerate the diffusion of hydrogen in AMWCNTs-Cu electrode, so the AMWCNTs-Cu electrode has a higher capacity of storage hydrogen.

Key words: Aligned Multi-walled carbon nanotubes(AMWCNTs), Electrochemical storage hydrogen, Cycle voltammetry, Electrochemical impedance

CLC Number:

TM 911.4

TrendMD:

LIU Jing, MAO Zong-Qiang, HAO Dong-Hui, ZHANG Xian-Feng, XU Cai-Lu, WU De-Hai . Electrochemical Storage Hydrogen of the Aligned Multi-walled Carbon Nanotubes[J]. Chem. J. Chinese Universities, 2004, 25(2): 334.

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Electrochemical Storage Hydrogen of the Aligned Multi-walled Carbon Nanotubes

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