Preferential Cation Vacancies in Perovskite Hydroxide for the Oxygen Evolution Reaction
學年 106
學期 2
出版（發表）日期 2018-05-17
作品名稱 Preferential Cation Vacancies in Perovskite Hydroxide for the Oxygen Evolution Reaction
作品名稱（其他語言）
著者 Dawei Chen; Man Qiao; Ying‐Rui Lu; Li Hao; Dongdong Liu; Prof. Chung‐Li Dong; Prof. Yafei Li; Prof. Shuangyin Wang
單位
出版者
著錄名稱、卷期、頁數 Angewandte Chemie 57(28), p.8691-8696
摘要 The oxygen evolution reaction (OER) is an ideal model to study the relationship between the activity and the surface properties of catalysts. Defect engineering has been extensively developed to tune the electrocatalytic activity for OER. Compared to the anion vacancies in metal oxides, cation vacancies are more challenging to selectively generate, and the insight into the structure and activity of cation vacancies‐rich catalysts are lacked. Herein, using SnCoFe perovskite hydroxide as a precursor, abundant Sn vacancies on the surface were preferentially produced by Ar plasma. Sn vacancies could be preferentially produced as confirmed by the X‐ray absorption spectra, probably owing to the lower lattice energy and weaker chemical bonds of Sn(OH)4. The Sn vacancies promoted the exposure of active CoFe sites, resulting in an amorphous surface layer, modulated the conductivity, and thus enhanced the OER performance.
關鍵字 defects;electrocatalysts;oxygen;evolution;reaction;perovskites;vacancies
語言 en_US
ISSN 1433-7851
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 DEU
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/114959 )