Open AccessDesign and Synthesis of Hollow Nanostructures for Electrochemical Water Splitting
Author(s) -
Yang Min,
Zhang Cai Hong,
Li Nian Wu,
Luan Deyan,
Yu Le,
Lou Xiong Wen David
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202105135
Subject(s) - water splitting , nanotechnology , materials science , oxygen evolution , electrolysis of water , electrolysis , electrochemistry , nanostructure , renewable energy , hydrogen fuel , hydrogen production , catalysis , chemical engineering , fuel cells , photocatalysis , electrode , chemistry , engineering , biochemistry , electrical engineering , electrolyte
Electrocatalytic water splitting using renewable energy is widely considered as a clean and sustainable way to produce hydrogen as an ideal energy fuel for the future. Electrocatalysts are indispensable elements for large‐scale water electrolysis, which can efficiently accelerate electrochemical reactions occurring at both ends. Benefitting from high specific surface area, well‐defined void space, and tunable chemical compositions, hollow nanostructures can be applied as promising candidates of direct electrocatalysts or supports for loading internal or external electrocatalysts. Herein, some recent progress in the structural design of micro‐/nanostructured hollow materials as advanced electrocatalysts for water splitting is summarized. First, the design principles and corresponding strategies toward highly effective hollow electrocatalysts for oxygen/hydrogen evolution reactions are highlighted. Afterward, an overview of current reports about hollow electrocatalysts with diverse architectural designs and functionalities is given, including direct hollow electrocatalysts with single‐shelled, multi‐shelled, or open features and heterostructured electrocatalysts based on hollow hosts. Finally, some future research directions of hollow electrocatalysts for water splitting are discussed based on personal perspectives.