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Modulating Electronic Structure of Metal‐Organic Framework for Efficient Electrocatalytic Oxygen Evolution
Author(s) -
Xue Ziqian,
Li Yinle,
Zhang Yawei,
Geng Wei,
Jia Baoming,
Tang Jia,
Bao Shixiong,
Wang HaiPing,
Fan Yanan,
Wei Zhangwen,
Zhang Zishou,
Ke Zhuofeng,
Li Guangqin,
Su ChengYong
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201801564
Subject(s) - overpotential , tafel equation , oxygen evolution , electrocatalyst , metal organic framework , materials science , catalysis , water splitting , chemical engineering , metal , nanotechnology , chemistry , electrode , electrochemistry , organic chemistry , adsorption , metallurgy , engineering , photocatalysis
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 A 2.7 B‐MOF‐FeCo 1.6 . More importantly, A 2.7 B‐MOF‐FeCo 1.6 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.