Highly active cobalt-based catalysts in situ prepared from CoX2 (X = Cl-, NO3-) and used for promoting hydrogen generation from NaBH4 solution

Chuan Wu; Ying Bai; Feng Wu; Bao lian Yi; Hua min Zhang

doi:10.1016/j.ijhydene.2009.04.028

Highly active cobalt-based catalysts in situ prepared from CoX₂ (X = Cl^-, NO₃^-) and used for promoting hydrogen generation from NaBH₄ solution

Chuan Wu^*, Ying Bai, Feng Wu, Bao lian Yi, Hua min Zhang

^*Corresponding author for this work

School of Material Science and Engineering

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

29 Citations (Scopus)

Abstract

Two kinds of CoX₂ (X = Cl^-, NO₃^-) are adopted as the accelerators for the hydrolysis reaction of NaBH₄, which is a promising H₂-supply method for proton exchange membrane fuel cell (PEMFC). In the reactor, the initial H₂ generation is caused by the reaction between pre-infused CoX₂ solution and subsequently imported NaBH₄ solution, and some precipitates are in situ formed on the catalyst bed by this way; and the following H₂ generation is promoted by these precipitates. It is found that there are competitive reactions during H₂ generation from an NaBH₄ to NaOH solution, the anions of CoX₂ are crucial to the reaction pathways, which led to the formation of highly active Co-B or inactive Co(OH)₂. The effects of the CoX₂ concentration, the NaOH concentration, the NaBH₄ feeding rate and the NaBH₄ concentration on H₂ generation performances are discussed and compared.

Original language	English
Pages (from-to)	2675-2679
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	7
DOIs	https://doi.org/10.1016/j.ijhydene.2009.04.028
Publication status	Published - Apr 2010

Keywords

Anion effect
Co-B
Hydrogen generation
PEMFC
Sodium borohydride

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

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10.1016/j.ijhydene.2009.04.028

Cite this

@article{b38fbe10b86a4ea4ae8273c4895da681,

title = "Highly active cobalt-based catalysts in situ prepared from CoX2 (X = Cl-, NO3-) and used for promoting hydrogen generation from NaBH4 solution",

abstract = "Two kinds of CoX2 (X = Cl-, NO3-) are adopted as the accelerators for the hydrolysis reaction of NaBH4, which is a promising H2-supply method for proton exchange membrane fuel cell (PEMFC). In the reactor, the initial H2 generation is caused by the reaction between pre-infused CoX2 solution and subsequently imported NaBH4 solution, and some precipitates are in situ formed on the catalyst bed by this way; and the following H2 generation is promoted by these precipitates. It is found that there are competitive reactions during H2 generation from an NaBH4 to NaOH solution, the anions of CoX2 are crucial to the reaction pathways, which led to the formation of highly active Co-B or inactive Co(OH)2. The effects of the CoX2 concentration, the NaOH concentration, the NaBH4 feeding rate and the NaBH4 concentration on H2 generation performances are discussed and compared.",

keywords = "Anion effect, Co-B, Hydrogen generation, PEMFC, Sodium borohydride",

author = "Chuan Wu and Ying Bai and Feng Wu and Yi, {Bao lian} and Zhang, {Hua min}",

year = "2010",

month = apr,

doi = "10.1016/j.ijhydene.2009.04.028",

language = "English",

volume = "35",

pages = "2675--2679",

journal = "International Journal of Hydrogen Energy",

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T1 - Highly active cobalt-based catalysts in situ prepared from CoX2 (X = Cl-, NO3-) and used for promoting hydrogen generation from NaBH4 solution

AU - Wu, Chuan

AU - Bai, Ying

AU - Wu, Feng

AU - Yi, Bao lian

AU - Zhang, Hua min

PY - 2010/4

Y1 - 2010/4

N2 - Two kinds of CoX2 (X = Cl-, NO3-) are adopted as the accelerators for the hydrolysis reaction of NaBH4, which is a promising H2-supply method for proton exchange membrane fuel cell (PEMFC). In the reactor, the initial H2 generation is caused by the reaction between pre-infused CoX2 solution and subsequently imported NaBH4 solution, and some precipitates are in situ formed on the catalyst bed by this way; and the following H2 generation is promoted by these precipitates. It is found that there are competitive reactions during H2 generation from an NaBH4 to NaOH solution, the anions of CoX2 are crucial to the reaction pathways, which led to the formation of highly active Co-B or inactive Co(OH)2. The effects of the CoX2 concentration, the NaOH concentration, the NaBH4 feeding rate and the NaBH4 concentration on H2 generation performances are discussed and compared.

AB - Two kinds of CoX2 (X = Cl-, NO3-) are adopted as the accelerators for the hydrolysis reaction of NaBH4, which is a promising H2-supply method for proton exchange membrane fuel cell (PEMFC). In the reactor, the initial H2 generation is caused by the reaction between pre-infused CoX2 solution and subsequently imported NaBH4 solution, and some precipitates are in situ formed on the catalyst bed by this way; and the following H2 generation is promoted by these precipitates. It is found that there are competitive reactions during H2 generation from an NaBH4 to NaOH solution, the anions of CoX2 are crucial to the reaction pathways, which led to the formation of highly active Co-B or inactive Co(OH)2. The effects of the CoX2 concentration, the NaOH concentration, the NaBH4 feeding rate and the NaBH4 concentration on H2 generation performances are discussed and compared.

KW - Anion effect

KW - Co-B

KW - Hydrogen generation

KW - PEMFC

KW - Sodium borohydride

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DO - 10.1016/j.ijhydene.2009.04.028

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