Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
School of Chemical Engineering and Materials, Changzhou Institute of Technology, Changzhou 213032, P.R. China.
Nanoscale. 2019 Nov 28;11(44):21259-21265. doi: 10.1039/c9nr07002h. Epub 2019 Oct 31.
The development of high-efficiency nonprecious electrocatalysts based on inexpensive and Earth abundant elements is of great significance for renewable energy technologies. Group VIII transition metal phosphides (TMPs) gradually stand out due to their intriguing properties including low resistance and superior catalytic activity and stability. Herein, we adopt a unique MOF-derived strategy to synthesize transition metal phosphide nanoboxes which can be employed as electrocatalysts for the hydrogen evolution reaction. During this process, we converted a Co-MOF to a CoNi-MOF by ion exchange and low-temperature phosphating to achieve CoNiP nanoboxes. The CoNiP nanoboxes can reach a current density of 10 mA cm at a low overpotential of 138 mV with a small Tafel slope of 65 mV dec.
基于廉价且丰富的元素开发高效非贵金属电催化剂对于可再生能源技术具有重要意义。VIII 族过渡金属磷化物（TMPs）由于其独特的性质，包括低电阻和优异的催化活性和稳定性，逐渐脱颖而出。在此，我们采用一种独特的 MOF 衍生策略合成了作为析氢反应电催化剂的过渡金属磷化物纳米盒。在这个过程中，我们通过离子交换和低温磷化将 Co-MOF 转化为 CoNi-MOF，从而得到 CoNiP 纳米盒。CoNiP 纳米盒在低过电势 138 mV 时即可达到 10 mA cm 的电流密度，塔菲尔斜率为 65 mV dec。
