An Efficient and Earth-Abundant Oxygen-Evolving Electrocatalyst Based on Amorphous Metal Borides
An Efficient and Earth-Abundant Oxygen-Evolving Electrocatalyst Based on Amorphous Metal Borides
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DOI：
10.1002/aenm.201701475
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发表时间：
2018-01-05
影响因子：
27.8
通讯作者：
Wang, Xin
中科院分区：
文献类型：
--
作者：
Nsanzimana, Jean Marie Vianney;Peng, Yuecheng;Wang, Xin
能量存储和转换技术迫切需要具有成本效益且高效的析氧电催化剂。在这项工作中，通过简单的方法制备的非晶三金属硼化物纳米催化剂（Fe-Co-2.3Ni-B）被报道为一种高效的析氧反应电催化剂。它具有 274 mV 的过电势 ()，可提供 10 mA cm(-2) 的几何电流密度 (j(geo))、38 mV dec(-1) 的小塔菲尔斜率，以及在 0.3 mg cm(-2) 质量负载下出色的长期耐用性。令人印象深刻的电催化性能源于独特的非晶多金属-类金属复合纳米结构。从应用的角度来看，这项工作具有很大的前景，因为该过程很简单，并且可以大规模生产廉价而高效的材料。
Cost-effective and efficient oxygen-evolving electrocatalysts are urgently required for energy storage and conversion technologies. In this work, an amorphous trimetallic boride nanocatalyst (Fe-Co-2.3Ni-B) prepared by a simple approach is reported as a highly efficient oxygen evolution reaction electrocatalyst. It exhibits an overpotential () of 274 mV to deliver a geometric current density (j(geo)) of 10 mA cm(-2), a small Tafel slope of 38 mV dec(-1), and excellent long-term durability at a mass loading of 0.3 mg cm(-2). The impressive electrocatalytic performance originates from the unique amorphous multimetal-metalloid complex nanostructure. From application's point of view, this work holds great promise as this process is simple and allows for large-scale production of cheap, yet efficient, material.