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Boosting electrocatalytic hydrogen generation by a renewable porous wood membrane decorated with Fe-doped NiP alloys

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Journal of Energy Chemistry 2021年第5期30卷 23-33页

作者： Bin Hui Jian Li Yun Lu Kewei Zhang Hongjiao Chen Dongjiang Yang Liping Cai Zhenhua Huang State Key Laboratory of Bio-Fibers and Eco-Textiles Shandong Collaborative Innovation Center of Marine Biobased Fiber and Ecological TextileInstitute of Marine Biobased MaterialsSchool of Environmental Science and EngineeringQingdao UniversityQingdao 266071ShandongChina Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education Research Center of Wood Bionic Intelligent ScienceNortheast Forestry UniversityHarbin 150040HeilongjiangChina Research Institute of Wood Industry Chinese Academy of ForestryBeijing 100091China College of Engineering University of North Texas3940 NElm St.DentonTX 76207USA

Porous biomass electrodes have emerged as a critical material for electrocatalytic hydrogen evolution reaction(HER).However,most approaches for synthesizing porous electrodes from biomass require high energy consumption,which is resulted from the smash of biomass and the undergoing of serial ***,a self-supported wood-derived"breathable"membrane is utilized directly as electrodes for highefficient HER via an assembly of Fe-doped NiP *** well-designed hierarchical porous structures in natural wood membrane(NWM)are unusually beneficial for electrolytes accessibility and hydrogen gas *** obtained wood-derived membrane exhibits a high electrocatalytic activity and good cycling durability in acidic and alkaline ***,the Fe_(0.074) NiP alloys/NWM electrode affords a large current density of 100 m A cm^(-2) at extremely low overpotentials of 168 mV in acidic electrolyte and174 m V in alkaline *** functional theory calculations unveil that the Fe atom doped in NiP alloys can create much more charge accumulation around Fe and Ni active sites,which helps decrease the △GH_(*)and △G_(H2O)and significantly promote the HER *** new insight will promote further explorations of economic,high-efficient,and biodegradable wood-derived electrocatalysts for HER.

关键词： Wood membrane Hierarchical structures electrocatalysis:hydrogen generation

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