Trimetallic NiFeMo for Overall Electrochemical Water Splitting with a Low Cell Voltage

被引：244

作者：

Qin, Fan ^{[1
]}

Zhao, Zhenhuan ^{[2
,3
]}

Alam, Md Kamrul ^{[1
]}

Ni, Yizhou ^{[4
,5
]}

Robles-Hernandez, Francisco ^{[3
,6
]}

Yu, Luo ^{[4
,5
]}

Chen, Shuo ^{[4
,5
]}

Ren, Zhifeng ^{[4
,5
]}

Wang, Zhiming ^{[2
]}

Bao, Jiming ^{[1
,2
,3
]}

机构：

[1] Univ Houston, Mat Sci & Engn, Houston, TX 77204 USA

[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[3] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

[4] Univ Houston, Dept Phys, Houston, TX 77204 USA

[5] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[6] Univ Houston, Coll Technol, Houston, TX 77204 USA

来源：

ACS ENERGY LETTERS | 2018年 / 3卷 / 03期

基金：

美国国家科学基金会;

关键词：

LAYERED DOUBLE HYDROXIDE; HYDROGEN EVOLUTION REACTION; BIFUNCTIONAL ELECTROCATALYSTS; HIGHLY EFFICIENT; NICKEL FOAM; NANOWIRE ARRAYS; OXYGEN; MOLYBDENUM; CATALYSTS; PHOSPHIDE;

D O I：

10.1021/acsenergylett.7b01335

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the development of an efficient and earth-abundant catalyst for electrochemical overall water splitting. Trimetallic NiFeMo alloy is synthesized by hydrothermal deposition from inorganic precursors and subsequent low-temperature thermal annealing. A complete cell made of NiFeMo electrodes on nickel foam exhibits a low voltage of 1.45 V at 10 mA/cm(2) as a result of low overpotentials for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). High-resolution transmission electron microscopy reveals that nanometer-sized single-crystal domains of Ni, Fe, and Mo are intimately integrated at the atomic level, which enables a synergistic effect of metallic Ni, Fe, and Mo for efficient HER, while self formed Ni-Fe-Mo (oxy)hydroxides on the surface of the NiFeMo anode become active sites for OER. Such a multimetallic alloy and its (oxy)hydroxides represent a typical HER/OER catalyst couple, and our method provides a new route to develop efficient low-cost metallic alloys for overall water splitting.

引用

页码：546 / 554

页数：17

共 72 条

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