Unusual double ligand holes as catalytic active sites in LiNiO2
學年 111
學期 2
出版（發表）日期 2023-04-13
作品名稱 Unusual double ligand holes as catalytic active sites in LiNiO2
作品名稱（其他語言）
著者 Haoliang Huang, Yu Chung Chang, Yu Cheng Huang, Lili Li, Alexander C. Komarek, Liu Hao Tjeng, Yuki Orikasa, Chih Wen Pao, Ting Shan Chan, Jin Ming Chen, Shu Chih Haw, Jing Zhou, Yifeng Wang, Hong Ji Lin, Chien Te Chen, Chung Li Dong, Chang Yang Kuo, Jian Qiang Wang, Zhiwei Hu, Linjuan Zhang
單位
出版者
著錄名稱、卷期、頁數 Nature Communications 14, 2112
摘要 Designing efficient catalyst for the oxygen evolution reaction (OER) is of importance for energy conversion devices. The anionic redox allows formation of O-O bonds and offers higher OER activity than the conventional metal sites. Here, we successfully prepare LiNiO2 with a dominant 3d8L configuration (L is a hole at O 2p) under high oxygen pressure, and achieve a double ligand holes 3d8L2 under OER since one electron removal occurs at O 2p orbitals for NiIII oxides. LiNiO2 exhibits super-efficient OER activity among LiMO2, RMO3 (M = transition metal, R = rare earth) and other unary 3d catalysts. Multiple in situ/operando spectroscopies reveal NiIII→NiIV transition together with Li-removal during OER. Our theory indicates that NiIV (3d8L2) leads to direct O-O coupling between lattice oxygen and *O intermediates accelerating the OER activity. These findings highlight a new way to design the lattice oxygen redox with enough ligand holes created in OER process.
關鍵字
語言 en
ISSN 2041-1723
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Linjuan Zhang
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/987654321/125725 )