Bifunctional cobalt phosphide nanoparticles with convertible surface structure for efficient electrocatalytic water splitting in alkaline solution
學年 107
學期 2
出版（發表）日期 2019-05-01
作品名稱 Bifunctional cobalt phosphide nanoparticles with convertible surface structure for efficient electrocatalytic water splitting in alkaline solution
作品名稱（其他語言）
著者 M. Wang; C. L. Dong; Y. C. Huang; S. Shen
單位
出版者
著錄名稱、卷期、頁數 Journal of Catalysis 371, p.262-269
摘要 Highly efficient non-noble materials for water splitting are essential for renewable energy application. Herein, cobalt phosphide nanoparticles with high P/Co ratio are synthesized and display overpotentials of 348 mV (or 343 mV) for oxygen evolution reaction (OER) with surface oxidized active species formed and 200 mV (or 184 mV) for hydrogen evolution reaction (HER) in 1 M NaOH (or 1 M KOH) at 10 mA cm−2. The improved OER could be ascribed to the smaller particle size for increased active site number and more importantly the improved intrinsic activity probably assisted by more phosphates formed during electrocatalytic reaction; while the improved HER performance is mainly attributed to the increased active sites in the form of CoP bonds. In a two-electrode configuration, the catalysts exhibit excellent overall water splitting performance, with 10 mA cm−2 at 1.58 V and a long-time reaction stability without attenuation during 10 h operation.
關鍵字 Cobalt hydroxides;Cobalt phosphides;Electrocatalysis;Surface structures;Overall water splitting
語言 en
ISSN 1090-2694
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
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