Highly active and selective nickel molybdenum catalysts for direct hydrazine fuel cell

被引：60

作者：

Asset, Tristan ^{[1
,2
]}

Roy, Aaron ^{[3
]}

Sakamoto, Tomokazu ^{[4
]}

Padilla, Monica ^{[3
]}

Matanovic, Ivana ^{[3
,6
]}

Artyushkova, Kateryna ^{[3
]}

Serov, Alexey ^{[3
]}

Maillard, Frederic ^{[1
,2
]}

Chatenet, Marian ^{[1
,2
,7
]}

Asazawa, Koichiro ^{[4
]}

Tanaka, Hirohisa ^{[4
,5
]}

Atanassov, Plamen ^{[3
]}

机构：

[1] Univ Grenoble Alpes, LEPMI, F-38000 Grenoble, France

[2] CNRS, LEPMI, F-38000 Grenoble, France

[3] Univ New Mexico, Chem & Biol Engn Dept, UNM Ctr Microengn Mat, Albuquerque, NM 87131 USA

[4] Daihatsu Motor Co Ltd, Adv R&D Dept, R&D Ctr, Corp Business Unit, 3000 Yamanoue, Ryuo, Shiga 5202593, Japan

[5] Kwansei Gakuin Univ, Dept Nanotechnol Sustainable Energy, Sch Sci & Technol, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan

[6] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[7] IUF, French Univ Inst, Paris, France

来源：

ELECTROCHIMICA ACTA | 2016年 / 215卷

关键词：

Direct Hydrazine Fuel Cell; Ni-based catalyst; Nickel; Molybdenum; Ammonia Generation; INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; DIRECT BOROHYDRIDE; ANODE CATALYSTS; ELECTROOXIDATION; REDUCTION; PLATINUM; TRANSITION; STABILITY; MECHANISM;

D O I：

10.1016/j.electacta.2016.08.106

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-supported NiMo catalysts ( NiMo/C) were synthesized and investigated for the electrooxidation of hydrazine. Their morphology and composition were determined with physicochemical characterizations ( TEM-EDS, XPS and XRD) and further bridged to their electrocatalytic activity. The electrochemical performances measured in rotating disk electrode experiments reached 7.68 +/- 0.96 kA g(metal) (1) for hydrazine electrooxidation at E = 0.4 V vs. RHE for the carbon-supported NiMo ( 9:1)/C. This value is amongst the highest reported in the literature. The large activity of the carbon-supported NiMo ( 9: 1)/C catalyst was ascribed to the effect of a low but non-negligible (< 15 at. %) molybdenum content, as molybdenum atoms stabilize the hydrazine N-N bond, thereby preventing the chemical decomposition of hydrazine into ammonia, and improving the catalyst selectivity towards the complete ( and desired) hydrazine oxidation into N-2 gas. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：420 / 426

页数：7

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