当前位置: X-MOL 学术Adv. Energy Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Modulating Electronic Structure of Metal‐Organic Framework for Efficient Electrocatalytic Oxygen Evolution
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-09-02 , DOI: 10.1002/aenm.201801564
Ziqian Xue 1 , Yinle Li 1 , Yawei Zhang 1 , Wei Geng 2 , Baoming Jia 1 , Jia Tang 1 , Shixiong Bao 1 , Hai-Ping Wang 1 , Yanan Fan 1 , Zhang-wen Wei 1 , Zishou Zhang 1 , Zhuofeng Ke 2 , Guangqin Li 1 , Cheng-Yong Su 1
Affiliation  

Exploring effective electrocatalysts for oxygen evolution reaction (OER) is a crucial requirement of many energy storage and conversion systems, involving fuel cells, water splitting, and metal–air batteries. Herein, a heterogeneity metal‐organic framework (MOF) is prepared by the assembling of metals, terephthalic (A) and 2‐aminoterephthalic ligands (B), defined as A2.7B‐MOF‐FeCo1.6. More importantly, A2.7B‐MOF‐FeCo1.6 exhibits excellent OER activity with an ultralow overpotential of 288 mV at 10 mA cm−2 and a Tafel slope of 39 mV dec−1. The high electrocatalytic performance for OER is attributed to the optimized electronic structure of the intrinsic catalytic center in MOFs via the engineering of the metal node and linkers. The work offers not only a benchmark for pure MOFs in electrocatalysis but also a new efficient strategy to improve electrocatalytic performance by electronic structure engineering of catalytic active centers in MOFs.

中文翻译:

调制金属-有机骨架的电子结构以有效地产生电催化氧

探索用于氧气释放反应(OER)的有效电催化剂是许多能量存储和转换系统(包括燃料电池,水分解和金属空气电池)的关键要求。在此,通过金属,对苯二甲酸(A)和2-氨基对苯二甲酸配体(B)的组装制备了异相金属有机骨架(MOF),定义为A 2.7 B-MOF-FeCo 1.6。更重要的是,A 2.7 B-MOF-FeCo 1.6具有出色的OER活性,在10 mA cm -2时具有288 mV的超低过电势,而Tafel斜率在dec -1时为39 mV。OER的高电催化性能归因于MOF中固有催化中心的优化电子结构,这是通过对金属节点和连接基进行的工程设计而实现的。这项工作不仅为电催化中的纯MOF提供了基准,而且为通过MOF中催化活性中心的电子结构工程改善电催化性能提供了新的有效策略。
更新日期:2018-09-02
down
wechat
bug