Surface phosphorization of hierarchically nanostructured nickel molybdenum oxide derived electrocatalyst for direct hydrazine fuel cell

Surface phosphorization of hierarchically nanostructured nickel molybdenum oxide derived electrocatalyst for direct hydrazine fuel cell

作者:Wen, H (Wen, He)[ 1 ] ; Cao, GX (Cao, Guo-Xuan)[ 1 ] ; Chen, MH (Chen, Mu-Hua)[ 1 ] ; Qiu, YP (Qiu, Yu-Ping)[ 1 ] ; Gan, LY (Gan, Li-Yong)[ 1 ] ; Wang, P (Wang, Ping)[ 1 ]

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APPLIED CATALYSIS B-ENVIRONMENTAL

卷: 268

文献号: 118388

DOI: 10.1016/j.apcatb.2019.118388

出版年: JUL 5 2020

文献类型:Article

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摘要

Non-faradaic catalytic decomposition of hydrazine (N2H4) is a vital but underappreciated problem for direct hydrazine fuel cell (DHFC). Herein, a careful study of a nickel molybdenum oxide derived catalyst for N2H4 electrooxidation is reported, with special focus on the method for effectively suppressing non-faradaic decomposition of hydrazine as well as the underlying mechanism. A hierarchically nanostructured catalyst consisting of tiny Ni10Mo alloy nanoparticles dispersed on porous Ni-Mo-O nanosheets is synthesized using a simple hydrothermal method followed by reductive annealing treatment. Thus-prepared catalyst shows high activity towards N2H4 electrooxidation, but is entangled with the problematic selectivity towards non-faradaic decomposition of N2H4. Our study find that this problem can be circumvented by a controlled phosphorization method. The resultant catalyst (Ni2P@Ni10Mo/Ni-Mo-O/NF) exhibits exceptionally high activity, excellent durability and nearly 100 % selectivity towards N2H4 electrooxidation. A detailed structural characterization and density functional theory calculations are conducted to understand the phosphorization-induced modification of catalytic property.

关键词

作者关键词:Direct hydrazine fuel cell; Electrocatalysts; Hydrazine electrooxidation; Non-faradaic decomposition

KeyWords Plus:HYDROGEN GENERATION; ANODE CATALYSTS; PERFORMANCE; ELECTRODES; OXIDATION; ARRAY

作者信息

通讯作者地址: Wang, P (通讯作者)

显示更多South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China.

地址:

显示更多[ 1 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China

电子邮件地址:mspwang@scut.edu.cn

基金资助致谢

基金资助机构显示详情授权号

National Natural Science Foundation of China

51621001

National Key R&D Program of China

2018YFB1502100

Foundation for Research Groups of the Natural Science Foundation of Guangdong Province

2016A030312011

National Natural Science Foundation of China

51671087

Special Support Plan for National 10000-talents Program  

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出版商

ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS

期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Engineering

Web of Science 类别:Chemistry, Physical; Engineering, Environmental; Engineering, Chemical