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

时间:2020-07-07作者:浏览量:252


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