The electrolysis of water to produce hydrogen is an important technique to replace traditional fossil fuel-based hydrogen production.This method efficiently converts electrical energy into chemical energy,it is ostens...The electrolysis of water to produce hydrogen is an important technique to replace traditional fossil fuel-based hydrogen production.This method efficiently converts electrical energy into chemical energy,it is ostensibly a promising candidate for addressing the energy crisis.Significant effort has been devoted to developing efficient electrocatalysts for water electrolysis.The exploration of suitable catalytic materials for the hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and other bifunctional electrocatalytic reactions is crucial.Transition metal selenides(TMSes)have emerged as potential HER and OER electrocatalysts because of their unique electronic structures,which are beneficial for charge transfer,tuneable bandgaps,distinctive morphologies,and low-cost.This review discusses the mechanisms and performance comparisons of TMSes in overall water splitting under various pH conditions.From an industrial and commercial perspective,the catalytic performance of TMSes for the HER and OER is not ideal.Methods for preparing electrocatalytic materials and optimizing materials for overall water decomposition and modulation mechanisms have been introduced to improve electrocatalytic performance,such as element doping,carbon composites,bimetallic systems,morphology control,and heterogeneous interface engineering.Finally,the challenges and prospects of TMSes were discussed.展开更多
Rechargeable magnesium batteries have received increasing interest because of the prominent advantages, including high security, low cost, and high energy density. The development of rechargeable magnesium batteries i...Rechargeable magnesium batteries have received increasing interest because of the prominent advantages, including high security, low cost, and high energy density. The development of rechargeable magnesium batteries is hindered by the sluggish Mg2+ion diffusion kinetics, which makes the exploration of high-performance cathode materials a problem. Recently researchers have exploited various seleniumbased cathodes for rechargeable magnesium batteries. Herein, we have critically reviewed these advancements, studying different types of reaction mechanisms and analyzing the electrochemical performance of cathode materials in rechargeable magnesium batteries. Besides, as key materials for rechargeable magnesium batteries, the exploit and optimization of electrolytes are discussed as well, including the selection of reagents, the effect of Li salts, and the compatibility between electrodes and electrolytes. Finally,promising directions are proposed for future rechargeable magnesium batteries based on selenium-based cathode materials.展开更多
基金financially supported by the National Natural Science Foundation of China(No.U2002213)Tianshan Innovation Team Plan of Xinjiang Uygur Autonomous Region(No.2023D14002)+3 种基金Open Foundation of Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials(No.2022GXYSOF10)Open Fund of the Hubei Longzhong Laboratory(No.2022KF07)Science Foundation of Donghai Laboratory(No.DH-2022KF0314)Double-First Class University Plan(No.C176220100042).
文摘The electrolysis of water to produce hydrogen is an important technique to replace traditional fossil fuel-based hydrogen production.This method efficiently converts electrical energy into chemical energy,it is ostensibly a promising candidate for addressing the energy crisis.Significant effort has been devoted to developing efficient electrocatalysts for water electrolysis.The exploration of suitable catalytic materials for the hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and other bifunctional electrocatalytic reactions is crucial.Transition metal selenides(TMSes)have emerged as potential HER and OER electrocatalysts because of their unique electronic structures,which are beneficial for charge transfer,tuneable bandgaps,distinctive morphologies,and low-cost.This review discusses the mechanisms and performance comparisons of TMSes in overall water splitting under various pH conditions.From an industrial and commercial perspective,the catalytic performance of TMSes for the HER and OER is not ideal.Methods for preparing electrocatalytic materials and optimizing materials for overall water decomposition and modulation mechanisms have been introduced to improve electrocatalytic performance,such as element doping,carbon composites,bimetallic systems,morphology control,and heterogeneous interface engineering.Finally,the challenges and prospects of TMSes were discussed.
基金financially supported by the National Natural Science Foundation of China (Nos. 21975159, 21573146 and U1705255)the Shanghai Aerospace Science and Technology Innovation Fund (No. SAST2018–117)the Shanghai Municipal Commission of Science and Technology (No. 11JC1405700)。
文摘Rechargeable magnesium batteries have received increasing interest because of the prominent advantages, including high security, low cost, and high energy density. The development of rechargeable magnesium batteries is hindered by the sluggish Mg2+ion diffusion kinetics, which makes the exploration of high-performance cathode materials a problem. Recently researchers have exploited various seleniumbased cathodes for rechargeable magnesium batteries. Herein, we have critically reviewed these advancements, studying different types of reaction mechanisms and analyzing the electrochemical performance of cathode materials in rechargeable magnesium batteries. Besides, as key materials for rechargeable magnesium batteries, the exploit and optimization of electrolytes are discussed as well, including the selection of reagents, the effect of Li salts, and the compatibility between electrodes and electrolytes. Finally,promising directions are proposed for future rechargeable magnesium batteries based on selenium-based cathode materials.
