Ultrahigh‐Current‐Density and Long‐Term‐Durability Electrocatalysts for Water Splitting

Hydrogen economy is imagined where excess electric energy from renewable sources stored directly by electrochemical water splitting into hydrogen is later used as clean hydrogen fuel. Electrocatalysts with the superhigh current density (1000 mA cm−2‐level) and long‐term durability (over 1000 h), esp...

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Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2022-01, Vol.18 (4), p.e2104513-n/a
Main Authors: Wen, Qunlei, Zhao, Yang, Liu, Youwen, Li, Huiqiao, Zhai, Tianyou
Format: Article
Language:English
Subjects:
Atomic structure
Charge transfer
Current density
Durability
Electrical resistivity
Electrocatalysts
Hydrogen
Hydrogen fuels
hydrogen production
Hydrogen-based energy
long‐term durability
Mass transfer
Nanotechnology
ultrahigh current density
Water splitting
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cited_by cdi_FETCH-LOGICAL-c4393-da203f50994aaca874346e5ed47476272dfc90d248f436248dfba80993f2293a3
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container_title Small (Weinheim an der Bergstrasse, Germany)
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creator Wen, Qunlei
Zhao, Yang
Liu, Youwen
Li, Huiqiao
Zhai, Tianyou
description Hydrogen economy is imagined where excess electric energy from renewable sources stored directly by electrochemical water splitting into hydrogen is later used as clean hydrogen fuel. Electrocatalysts with the superhigh current density (1000 mA cm−2‐level) and long‐term durability (over 1000 h), especially at low overpotentials (
doi_str_mv 10.1002/smll.202104513
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Electrocatalysts with the superhigh current density (1000 mA cm−2‐level) and long‐term durability (over 1000 h), especially at low overpotentials (&lt;300 mV), seem extremely critical for green hydrogen from experiment to industrialization. Along the way, numerous innovative ideas are proposed to design high efficiency electrocatalysts in line with industrial requirements, which also stimulates the understanding of the mass/charge transfer and mechanical stability during the electrochemical process. It is of great necessity to summarize and sort out the accumulating knowledge in time for the development of laboratory to commercial use in this promising field. This review begins with examining the theoretical principles of achieving high‐efficiency electrocatalysts with high current densities and excellent durability. Special attention is paid to acquaint efficient strategies to design perfect electrocatalysts including atomic structure regulation for electrical conductivity and reaction energy barrier, array configuration constructing for mass transfer process, and multiscale coupling for high mechanical strength. Finally, the importance and the personal perspective on future opportunities and challenges, is highlighted. This review begins with examining the theoretical principles of achieving high‐efficiency electrocatalysts with large current densities and excellent durability. 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source Wiley-Blackwell Read & Publish Collection
subjects Atomic structure
Charge transfer
Current density
Durability
Electrical resistivity
Electrocatalysts
Hydrogen
Hydrogen fuels
hydrogen production
Hydrogen-based energy
long‐term durability
Mass transfer
Nanotechnology
ultrahigh current density
Water splitting
title Ultrahigh‐Current‐Density and Long‐Term‐Durability Electrocatalysts for Water Splitting
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