梁长海

个人信息Personal Information

教授

博士生导师

硕士生导师

任职 : 大连理工大学成都研究院院长

性别:男

毕业院校:中科院大连化学物理研究所

学位:博士

所在单位:化工学院

学科:化学工艺. 物理化学. 功能材料化学与化工

办公地点:大连理工大学西部校区化工综合楼A401室

联系方式:辽宁省大连市高新区凌工路2号,邮编116024

电子邮箱:changhai@dlut.edu.cn

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In-situ surface selective removal: An efficient way to prepare water oxidation catalyst

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论文类型:期刊论文

发表时间:2019-06-07

发表刊物:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录刊物:SCIE、EI

卷号:44

期号:29

页面范围:14955-14967

ISSN号:0360-3199

关键字:Surface selective removal; Nickel tin; Water oxidation

摘要:The design of cost-efficient earth-abundant catalysts with superior performance for oxygen evolution reaction (OER) is extremely important for future renewable energy production. The synthesis of high-surface-area catalysts with high intrinsic activity remains challenging. In this work, in-situ surface selective removal method by electrochemical oxidation is used to synthesize nickel (oxy)hydroxide covered Ni3Sn2 supported on carbon nanotubes (Ni3Sn2@NiOxHy/CNT), which exhibits 10, 100, 200 and 300 mA cm(-2) at over-potential of 250, 317, 329 and 335 mV in OER, respectively. In-situ surface selective removal of Sn from the crystal lattices and oxidation of Ni under anodic oxidation provide highly active amorphous NiOxHy with abundant surface defects, leading to the high apparent activity (current density) and intrinsic activity (TOF) of the Ni3Sn2@NiOxHy/CNT. This work develops a general method to synthesize high-surface-area water oxidation catalysts, which can be used to prepare a series of catalysts for oxygen evolution reaction in the near future. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.