Rh2S3/N-Doped Carbon Hybrids as pH-Universal Bifunctional Electrocatalysts for Energy-Saving Hydrogen Evolution

doi:10.1002/smtd.202000208

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	Rh2S3/N-Doped Carbon Hybrids as pH-Universal Bifunctional Electrocatalysts for Energy-Saving Hydrogen Evolution
	Zhang, Chaoxiong 1,5; Liu, Haoxuan 1; Liu, Yifan 2; Liu, Xijun 1; Mi, Yuying 1; Guo, Ruijie 1; Sun, Jiaqiang 3; Bao, Haihong 1; He, Jia 1; Qiu, Yuan 1
	2020-09-01
关键词	Alkalinity Anodic oxidation Carbon Catalyst activity Cost effectiveness Electrocatalysts Electrolytes Energy conservation Energy utilization Free energy Hydrazine Hydrogen evolution reaction Oxygen evolution reaction Rhodium compoundsAnodic reactions Bifunctional electrocatalysts Electrolysis systems Free energy change Hydrazine oxidation Hydrogen evolution Hydrogen generations Theoretical calculations
卷号	4
期号	9
DOI	10.1002/smtd.202000208
英文摘要	Using hydrazine oxidation reaction (HzOR) to replace the oxygen evolution reaction is an effective way to decrease the overpotential of the anodic reaction in overall water splitting (OWS), facilitating cost-effective and safe hydrogen production. Herein, Rh2S3/N-doped carbon hybrids (Rh2S3/NC) are first reported as novel and efficient bifunctional electrocatalysts for hydrazine-assisted hydrogen generation over a wide pH range. Specifically, Rh2S3/NC exhibits low overpotentials for the hydrogen evolution reaction (HER) in alkaline (38 mV), neutral (46 mV), and acidic (21 mV) electrolytes, to reach the current density of 10 mA cm−2, and maintains the activities over 70 h. Meanwhile, Rh2S3/NC also displays competitive HzOR performance at all-pH electrolytes. Thus, serving as a bifunctional electrocatalyst for both HER and HzOR, Rh2S3/NC shows overwhelming-Pt/C performance in three electrolytes, and can save over 93.3%, 85.2%, and 78.3% energy consumption compared to the corresponding OWS system. Moreover, theoretical calculations confirm that Rh2S3/NC owns low free-energy changes of the H adsorption and the dehydrogenation of adsorbed NHNH both of which are beneficial to enhance catalytic activity. This work develops a novel bifunctional electrocatalyst with free pH-dependent condition for the hydrazine-assisted electrolysis system to furtherly reduce the cost of massive industrial H2 production. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
会议录	Small Methods
会议录出版者	John Wiley and Sons Inc, Postfach 10 11 61, 69451 Weinheim, Boschstrabe 12, 69469 Weinheim, Deutschland, 69469, Germany
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132671]
专题	省部共建有色金属先进加工与再利用国家重点实验室继续教育学院
作者单位	1.Center for Electron Microscopy and Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin; 300384, China; 2.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; 3.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi; 030001, China; 4.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 5.Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming; Yunnan; 650504, China;
推荐引用方式 GB/T 7714	Zhang, Chaoxiong,Liu, Haoxuan,Liu, Yifan,et al. Rh2S3/N-Doped Carbon Hybrids as pH-Universal Bifunctional Electrocatalysts for Energy-Saving Hydrogen Evolution[C]. 见:.