期刊論文

學年 110
學期 2
出版（發表）日期 2022-02-12
作品名稱 Boron-tethering and regulative electronic states around iridium species for hydrogen evolution
作品名稱（其他語言）
著者 D. Xue; J. Cheng; P. Yuan; B. A. Lu; H. Xia; C. C. Yang; C. L. Dong*; H. Zhang; F. Shi; S. C. Mu; J. S. Hu; S. G. Sun; J. Zhang*
單位
出版者
著錄名稱、卷期、頁數 Advanced Functional Materials 32(21), 2113191
摘要 The performance of single-atom electrocatalysts usually suffers from attenuation due to high energy states, especially in harsh environments. Therefore, as high-efficiency electrocatalysts for hydrogen reduction reaction (HER), supported metal nanoclusters (NCs) with maximum metal atom efficiency are promising, yet the genuine mechanism involving rational orbital modulation is still arguable. Herein, the conjugating effect between electron-donor boron (B)-tethering engineering and iridium (Ir) that facilitates the electron capture of Ir atoms is explored, achieving highly dispersive Ir-NCs confined in N, B co-doped defective carbon (Ir@NBD-C). The Ir@NBD-C catalyst achieves displays remarkable high activity for HER in a pH-universal range, in particular, with an ultralow overpotential of 7 mV (10 mA cm−2), high mass activity of 652.2 A , and turnover frequency (TOF) of 1.90 H2 S−1 (100 mV) in 1.0 m KOH, outperforming almost all state-of-the-art HER electrocatalysts. Operando characterizations and theoretical calculations unveil that the outstanding catalytic activity can attribute to the optimal binding to hydrogen intermediate species (H*) derived from the tunable and favorable electronic structure of the Ir site through the tethering of B heteroatoms. Undoubtedly, this work brings new insight into the design of catalysts with high intrinsic activity and thermodynamic stability.
關鍵字
語言 en_US
ISSN 1616-3028
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 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/987654321/124079 )