Enhanced hydrogen evolution performance by 3D ordered macroporous Ru-CoP@NC electrocatalysts  

作　　者：Chen-Chen Zhang Sheng Wei Li-Xian Sun Yi-Fang Ouyang Fen Xu Hai-Liang Chu Hong-GePan Li-Xin Chen Xue-Zhang Xiao 

机构地区：[1]School of Material Science and Engineering,Guilin University of Electronic Technology,Guilin,541004,China [2]School of Chemistry and Chemical Engineering,Guangxi University,Nanning,530004,China [3]Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,Guangdong,China [4]Institute of Science and Technology for New Energy,Xi'an Technological University,Xi'an,710021,China [5]School of Materials Science and Engineering,Zhejiang University,Hangzhou,310058,China

出　　处：《Rare Metals》2024年第3期1095-1107,共13页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.U20A20237,52371218,51863005,52271205,51871065,51971068and52101245);the Scientific Research and Technology Development Program of Guangxi(Nos.AA19182014,AD 17195073,AA17202030-1,AB21220027 and 2021AB17045);the National Natural Science Foundation of Guangxi Province(Nos.2021GXNSFBA075057,2018GXNSFDA281051,2014GXNSFAA118401 and 2013GXNSFBA019244);the Scientific Research and Technology Development Program of Guilin(Nos.20210102-4 and 20210216-1);Guangxi Bagui Scholar Foundation;Guilin Lijiang Scholar Foundation;Guangxi Collaborative Innovation Centre of Structure and Property for New Energy and Materials;Guangxi Advanced Functional Materials Foundation;Application Talents Small Highlands and Chinesisch-Deutsche Kooperationsgruppe(No.GZ1528)。

摘　　要：Electrocatalytic water splitting coupled with sustainable energies is identified as an environmentally friendly and renewable strategy to generate high-quality hydrogen for the fuel cells.However,the main challenge is to develop high performance,low cost and chemically stable electrocatalysts to decline the energy barriers and enhance the sluggish kinetics of hydrogen evolution reaction(HER).Herein,a three-dimensional hierarchically ordered macroporous Ru-CoP@NC electrocatalyst(3DOM Ru-CoP@NC)derived from ordered macro-microporous metal-organic frameworks has been prepared using the precursor@template and double-solvent methods.The prepared 3DOM Ru-CoP@NC catalyst exhibits an overpotential of 15 mV(j=10 mA·cm^(-2))and a reaction Tafel slope of 38 mV·dec^(-1)in alkaline electrolyte,which are superior to commercial Pt@C catalyst.Additionally,the overpotential and reaction Tafel slope of this catalyst in acidic media are 45 mV and 50 mV·dec^(-1),respectively.The outstanding HER activities of 3DOM Ru-CoP@NC catalysts are ascribed to the 3D highly interconnectedreticular nanospaces that can increase effective reaction active sites.The N dope d carbon framework improves the electronic properties and conductivity.Moreover,the strong interaction of Ru and CoP nanoparticles also boosts the HER process.These results indicate that 3DOM Ru-CoP@NC catalysts with high catalytic activities have a broad application prospect in the future.

关 键 词：Hydrogen evolution reaction Template method 3D ordered macroporous Ru-CoP@NC 

分 类 号：TQ116.2[化学工程—无机化工] TQ426