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Chemical and morphological transformation of MOF-derived bimetallic phosphide for efficient oxygen evolution
Nano Energy ( IF 16.8 ) Pub Date : 2019-06-05 , DOI: 10.1016/j.nanoen.2019.06.002
Xian Wang , Lulu Chai , Junyang Ding , Li Zhong , Yujing Du , Ting-Ting Li , Yue Hu , Jinjie Qian , Shaoming Huang

Environmentally friendly and efficient transition metal phosphide (TMP) electrocatalysts for oxygen evolution reaction (OER) are developed to meet the growing demand for clean energy. Here we report a novel and environmentally friendly strategy for the preparation of MOF-derived bimetallic phosphide embedded in the carbonaceous matrix (FeNiP/C). With 3-dimensional hollow barrel shape and high specific surface, FeNiP/C-900 performs excellent OER catalytic performance, reaching a current density of 10 mA cm−2 at an overpotential of 229 mV with a low Tafel slope of 74.5 mV dec−1. Meantime, we explore the thermal conversion mechanism of P-containing MOF and the compositional changes during heat treatment.



中文翻译:

MOF衍生的双金属磷化物的化学和形态转变,可有效释放氧气

开发了用于氧气析出反应(OER)的环保高效的过渡金属磷化物(TMP)电催化剂,以满足对清洁能源不断增长的需求。在这里,我们报告了一种新颖且环保的策略,用于制备嵌入在碳质基质(FeNiP / C)中的MOF衍生的双金属磷化物。FeNiP / C-900具有三维空心桶形和高比表面,具有出色的OER催化性能,在229 mV的过电势下具有10 mA cm -2的电流密度,而Tafel斜率低至74.5 mV dec -1。同时,我们探讨了含P的MOF的热转化机理以及热处理过程中的成分变化。

更新日期:2019-06-05
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