作者:Wen, H (Wen, He)[1 ]; Gan, LY (Gan, Li-Yong)[1 ]; Dai, HB (Dai, Hong-Bin)[1 ]; Wen, XP (Wen, Xiao-Ping)[1 ]; Wu, LS (Wu, Lin-Song)[1 ]; Wu, H (Wu, Hui)[2 ]; Wang, P (Wang, Ping)[1 ]
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文献类型:Article
Synthesis of high-performance and cost-effective electrocatalysts towards hydrazine electrooxidation is vital to develop the direct hydrazine fuel cell (DHFC) as a viable energy conversion technology. Herein, we report a combined experimental and theoretical study of nickel phosphides (NixP) as promising catalysts for hydrazine electrooxidation. NixP nanowire array supported on a Ni foam (NF) was synthesized by a one-step phosphorization method using hypophosphite as a P-source. Ni12P5 and Ni2P phases are observed as the products of the direct phosphorization of commercial NF under the applied conditions with Ni2P nanoparticles exclusively distributing on the surface of Ni12P5. The NixP/NF catalyst exhibits a synergetic capabilities of exceptionally high activity, excellent durability and nearly 100% selectivity towards the complete electrooxidation of hydrazine in alkaline condition, which is among the best performance reported on hydrazine electrooxidation catalysts. First-principles calculations have been conducted to gain insight into the catalytic mechanism of Ni phosphides towards hydrazine electrooxidation.
作者关键词:Direct hydrazine fuel cell; Hydrazine electrooxidation; Electrocatalyst; Transition metal phosphides
KeyWords Plus:TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; FUEL-CELLS; HYDROGEN GENERATION; ANODE CATALYSTS; ALKALINE-MEDIUM; OXIDATION; ELECTROCATALYST; NICKEL; CARBON
通讯作者地址:Dai, HB; Wang, P (通讯作者)
 | South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China. |
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| [ 1 ] South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China |
| [ 2 ] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA |
| 基金资助机构 | 授权号 |
|---|---|
| National Natural Science Foundation of China | 51471168 51671087 11504303 |
| Foundation for Innovative Research Groups of the National Natural Science Foundation of China | 51621001 |
| Foundation for Research Groups of the Natural Science Foundation of Guangdong Province | 2016A030312011 |
| Special Support Plan for National 10000-talents Program |