材料科学
共轭体系
氢
导电体
氢键
化学工程
结晶学
纳米技术
无机化学
聚合物
有机化学
分子
复合材料
化学
工程类
作者
Lingtong Lin,Caiyun Zhang,Congcong Liang,Honggang Zhang,Zeyan Wang,Peng Wang,Zhaoke Zheng,Hefeng Cheng,Danning Xing,Ying Dai,Yuanyuan Liu,Baibiao Huang
标识
DOI:10.1002/adma.202402388
摘要
Abstract Conductive π‐d conjugated metal‐organic frameworks (MOFs) have attracted wide concerns in electrocatalysis due to their intrinsic high conductivity. However, the poor electrocatalytic stability is still a major problem that hinders the practical application of MOFs. Herein, we report a novel approach to enhancing the stability of MOF‐based electrocatalyst, namely, the introduction of hydrogen bonds (H‐bonds). Impressively, the π‐d conjugated MOF FeCo 3 (DDA) 2 exhibits ultra‐high oxygen evolution reaction (OER) stability (up to 2000 h). The experimental studies demonstrate that the presence of H‐bonds in FeCo 3 (DDA) 2 is responsible for its ultra‐high OER stability. Besides that, FeCo 3 (DDA) 2 also displays a prominent OER activity (an overpotential of 260 mV versus RHE at a current density of 10 mA cm −2 and a Tafel slope of 46.86 mV dec −1 ). Density functional theory (DFT) calculations further indicate that the synergistic effect of the Fe and Co sites in FeCo 3 (DDA) 2 contributes to its prominent OER performance. This work provides a new avenue of boosting the electrocatalytic stability of conductive π‐d conjugated MOFs. This article is protected by copyright. All rights reserved
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