Phosphorous Modified Metal Boride as High Efficiency HER Electrocatalyst
Phosphorous Modified Metal Boride as High Efficiency HER Electrocatalyst
复制标题
磷改性金属硼化物作为高效 HER 电催化剂
DOI：
10.20964/2019.07.68
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发表时间：
2019
影响因子：
1.5
通讯作者：
Yiteng Liu
中科院分区：
文献类型：
--
作者：
Yiteng Liu
研究高效耐用的析氢电催化剂对可再生能源技术具有重要意义。在此，我们报告了一系列无定形Co 10-x -Ni x -B-P纳米复合材料的制备，通过简单的化学还原和磷酸化方法。与Ni-B-P、Co-B-P和其他Co 10-x -Ni x -B-P电极相比，co8.5 -Ni 1.5 -B-P纳米复合催化剂在碱性溶液中表现出最高的HER电催化活性。co8.5 -Ni 1.5 -B-P在电流密度为10 mA cm -2时的过电位为145 mV，可实现60.5 mV / dec -1的低塔菲尔斜率。co8.5 -Ni 1.5 -B-P也表现出优异的耐久性，在50小时后没有明显的降解。这些新型的磷修饰硼化物是一种新的低成本、高效率的水裂解催化剂体系。
The investigation on highly active and durable electrocatalysts for the hydrogen evolution reaction (HER) is of great significant for renewable energy technologies. Herein, we report the fabrication of a series of amorphous Co 10-x -Ni x -B-P nanocomposites via a facile chemical reduction and phosphorization method. Compared to the Ni-B-P, Co-B-P, and other Co 10-x -Ni x -B-P electrodes, the Co 8.5 -Ni 1.5 -B-P nanocomposite catalyst exhibited the highest HER electrocatalytic activity in alkaline solution. The overpotential of Co 8.5 -Ni 1.5 -B-P is 145 mV at a current density of 10 mA cm -2 , and a low Tafel slope of 60.5 mV dec -1 is realized. Co 8.5 -Ni 1.5 -B-P also exhibits superior durability, showing no obvious degradation after 50 hours. These new phosphorous-modified borides are proved to be a new low-cost and high-efficiency catalyst system for water splitting. .