Single-crystalline layered double hydroxides with rich defects and hierarchical structure by mild reduction for enhancing the oxygen evolution reaction

作     者：Peng Zhou Junying He Yuqin Zou Yanyong Wang Chao Xie Ru Chen Shuangquan Zang Shuangyin Wang 

作者机构：Key Laboratory of Chem/Bio-Sensing and ChemometricsProvincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China College of Chemistry and Molecular EngineeringZhengzhou UniversityZhengzhou 450001China Shenzhen Institute of Hunan UniversityShenzhen 518057China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2019年第62卷第10期

页      面：1365-1370页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the Fundamental Research Funds for the Central Universities (531107051102) the National Natural Science Foundation of China (51402100, 21573066, 21522305) the Provincial Natural Science Foundation of Hunan (2016TP1009) the Shenzhen Discovery Funding (JCYJ20170306141659388) 

主　　题：single crystalline layered double hydroxides defects hierarchical structure oxygen evolution reaction 

摘      要：The oxygen evolution reaction(OER)with sluggish reaction kinetics and large overpotential is the critical reaction in water splitting that is promising for energy storage and *** double hydroxides(LDHs),due to their unique lamellar structure and flexibility of chemical component,are very competing material candidates for ***,the morphology structure and the electronic structure of LDHs were simultaneously tuned to improve the OER catalytic activity by mild solvothermal reduction using ethylene *** increased surface area,the introduction of oxygen vacancies and the construction of hierarchical structure greatly enhanced the electro-catalytic activity of LDHs for *** as-prepared LDHs showed a lower over-potential as low as 276 mV at a current density of 10 mA cm-2,and a small Tafel slope of 40.3 mV dec-1 accompanied with good *** work provides an efficient way to the design and optimization of advanced catalysts in the future.