Boosting OER performance of IrO2 in acid via urchin-like hierarchical-structure design

Qian Deng; You Sun; Jin Wang; Shengding Chang; Muwei Ji; Yunteng Qu; Kai Zhang; Bo Li

doi:10.1039/d1dt00329a

Boosting OER performance of IrO₂ in acid via urchin-like hierarchical-structure design

Dalton Trans. 2021 May 11;50(18):6083-6087. doi: 10.1039/d1dt00329a.

Authors

Qian Deng¹, You Sun², Jin Wang¹, Shengding Chang², Muwei Ji³, Yunteng Qu⁴, Kai Zhang², Bo Li²

Affiliations

¹ College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China. wangjin19@szu.edu.cn and Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. boli@mail.tsinghua.edu.cn.
² Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. boli@mail.tsinghua.edu.cn.
³ Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. boli@mail.tsinghua.edu.cn and College of Chemistry and Environment Engineering, Shenzhen University, Shenzhen 518060, China.
⁴ Department of Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China, Hefei 230026, China.

PMID: 33912880
DOI: 10.1039/d1dt00329a

Abstract

Urchin-like hierarchical IrO2 nanostructures, which are obtained by a surfactant-free, wet-chemical approach, show boosted OER performance in acid with an overpotential of 260 mV @10 mA cm-2geo under optimal pocessing conditions. The overpotential @10 mA cm-2geo can be kept below 285 mV for over 30 hours.