Isostructural MOFs with Higher Proton Conductivity for Improved Oxygen Evolution Reaction Performance

Mengxin Zhang; Quanjie Lin; Wangui Wu; Yingxiang Ye; Zizhu Yao; Xiuling Ma; Shengchang Xiang; Zhangjing Zhang

doi:10.1021/acsami.9b23356

Isostructural MOFs with Higher Proton Conductivity for Improved Oxygen Evolution Reaction Performance

ACS Appl Mater Interfaces. 2020 Apr 8;12(14):16367-16375. doi: 10.1021/acsami.9b23356. Epub 2020 Mar 25.

Authors

Mengxin Zhang¹, Quanjie Lin¹, Wangui Wu¹, Yingxiang Ye¹, Zizhu Yao¹, Xiuling Ma¹, Shengchang Xiang^{1

2}, Zhangjing Zhang^{1

2}

Affiliations

¹ Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, 32 Shangsan Road, Fuzhou 350007, P. R. China.
² State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.

PMID: 32208675
DOI: 10.1021/acsami.9b23356

Abstract

Here we synthesized two new isostructural MOFs (FJU-82-Co/FJU-82-Zn) and first observed that tuning of the proton conductivity may provide an effective strategy to improve the electrocatalytic OER perfomances of isostructural crystalline MOF materials. The conductivity value for FJU-82-Co is 7.40 × 10^-5 S cm^-1, which is 127-fold that for FJU-82-Zn with 5.80 × 10^-7 S cm^-1 at 60 °C and 98% RH, while the overpotential of FJU-82-Co is 0.57 V at 1 mA cm^-2, which is better than that of FJU-82-Zn with 1.17 V.

Keywords: electrocatalyst; isostructural MOFs; metal−organic frameworks (MOFs); oxygen evolution reaction; proton conductivity; solvothermal.