Effects of alkaline treatment of hydrogen storage alloy on electrocatalytic activity for NaBH4 oxidation

Guiling Wang; Xunying Wang; Rongrong Miao; Dianxue Cao; Kening Sun

doi:10.1016/j.ijhydene.2009.11.041

Effects of alkaline treatment of hydrogen storage alloy on electrocatalytic activity for NaBH₄ oxidation

Guiling Wang
, Xunying Wang
, Rongrong Miao
, Dianxue Cao^*
, Kening Sun

^*Corresponding author for this work

Harbin Engineering University
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Activation of the MmNi_4.03Co_0.42Mn_0.31Al_0.24 hydrogen storage alloy electrode is performed by immersing the electrode in a solution containing 6.0 mol dm^-3 NaOH and 0.1 mol dm^-3 NaBH_4. The effects of activation on the electrocatalytic activity of the electrode for NaBH₄ oxidation are investigated by cyclic voltammetry and chronoamperometry. Immersion activation greatly improves the electrocatalytic activity of the alloy electrode. Hydrogen was absorbed in the alloy during the immersion activation treatment and its electrooxidation is responsible for the high initial oxidation current. The stabilized current mainly results from the direct oxidation starting from the borohydride species. The effects of activation on structure and surface chemistry of the alloy are also discussed.

Original language	English
Pages (from-to)	1227-1231
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.ijhydene.2009.11.041
Publication status	Published - Feb 2010
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Activation
Direct borohydride fuel cell
Electrooxidation of NaBH
Hydrogen storage alloy

Access to Document

10.1016/j.ijhydene.2009.11.041

Cite this

@article{ff9ac93cf5bf43b38f58ff179d5c5292,

title = "Effects of alkaline treatment of hydrogen storage alloy on electrocatalytic activity for NaBH4 oxidation",

abstract = "Activation of the MmNi4.03Co0.42Mn0.31Al0.24 hydrogen storage alloy electrode is performed by immersing the electrode in a solution containing 6.0 mol dm-3 NaOH and 0.1 mol dm-3 NaBH4. The effects of activation on the electrocatalytic activity of the electrode for NaBH4 oxidation are investigated by cyclic voltammetry and chronoamperometry. Immersion activation greatly improves the electrocatalytic activity of the alloy electrode. Hydrogen was absorbed in the alloy during the immersion activation treatment and its electrooxidation is responsible for the high initial oxidation current. The stabilized current mainly results from the direct oxidation starting from the borohydride species. The effects of activation on structure and surface chemistry of the alloy are also discussed.",

keywords = "Activation, Direct borohydride fuel cell, Electrooxidation of NaBH, Hydrogen storage alloy",

author = "Guiling Wang and Xunying Wang and Rongrong Miao and Dianxue Cao and Kening Sun",

year = "2010",

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doi = "10.1016/j.ijhydene.2009.11.041",

language = "English",

volume = "35",

pages = "1227--1231",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Effects of alkaline treatment of hydrogen storage alloy on electrocatalytic activity for NaBH4 oxidation

AU - Wang, Guiling

AU - Wang, Xunying

AU - Miao, Rongrong

AU - Cao, Dianxue

AU - Sun, Kening

PY - 2010/2

Y1 - 2010/2

N2 - Activation of the MmNi4.03Co0.42Mn0.31Al0.24 hydrogen storage alloy electrode is performed by immersing the electrode in a solution containing 6.0 mol dm-3 NaOH and 0.1 mol dm-3 NaBH4. The effects of activation on the electrocatalytic activity of the electrode for NaBH4 oxidation are investigated by cyclic voltammetry and chronoamperometry. Immersion activation greatly improves the electrocatalytic activity of the alloy electrode. Hydrogen was absorbed in the alloy during the immersion activation treatment and its electrooxidation is responsible for the high initial oxidation current. The stabilized current mainly results from the direct oxidation starting from the borohydride species. The effects of activation on structure and surface chemistry of the alloy are also discussed.

AB - Activation of the MmNi4.03Co0.42Mn0.31Al0.24 hydrogen storage alloy electrode is performed by immersing the electrode in a solution containing 6.0 mol dm-3 NaOH and 0.1 mol dm-3 NaBH4. The effects of activation on the electrocatalytic activity of the electrode for NaBH4 oxidation are investigated by cyclic voltammetry and chronoamperometry. Immersion activation greatly improves the electrocatalytic activity of the alloy electrode. Hydrogen was absorbed in the alloy during the immersion activation treatment and its electrooxidation is responsible for the high initial oxidation current. The stabilized current mainly results from the direct oxidation starting from the borohydride species. The effects of activation on structure and surface chemistry of the alloy are also discussed.

KW - Activation

KW - Direct borohydride fuel cell

KW - Electrooxidation of NaBH

KW - Hydrogen storage alloy

UR - https://www.scopus.com/pages/publications/74849113581

U2 - 10.1016/j.ijhydene.2009.11.041

DO - 10.1016/j.ijhydene.2009.11.041

M3 - Article

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JF - International Journal of Hydrogen Energy

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