UHP Mg-Ge alloys was recently found to provide excellent corrosion resistance.This paper provides new insights on the mechanism of improved corrosion resistance of UHP Mg-Ge alloys in Hanks’solution.The studied UHP M...UHP Mg-Ge alloys was recently found to provide excellent corrosion resistance.This paper provides new insights on the mechanism of improved corrosion resistance of UHP Mg-Ge alloys in Hanks’solution.The studied UHP Mg-0.5Ge and UHP Mg-1Ge alloys showed superior corrosion resistance compared to UHP Mg and WE43,with the Mg-1Ge exhibiting the best corrosion performance.The exceptional corrosion resistance of the UHP alloy is attributed to(i)Mg_(2)Ge’s ability to suppress cathodic kinetics,(ii)Ge’s capability to accelerate the formation of a highly passive layer,and the(iii)low amounts of corrosion-accelerating impurities.展开更多
Lithium-sulfur(Li-S)batteries have attracted significant attention due to their high theoretical energy density and cost-effectiveness,leading to notable progress in recent years.However,a huge gap between fundamental...Lithium-sulfur(Li-S)batteries have attracted significant attention due to their high theoretical energy density and cost-effectiveness,leading to notable progress in recent years.However,a huge gap between fundamental research and practical implementation remains a major obstacle to commercialization.This review first outlines critical design parameters and technical challenges in realizing practical high energy density Li-S batteries,and summarizes the recent advancements.It then systematically discusses potential strategies to address these challenges,focusing on cathode kinetics,electrolyte optimization,and anode interface engineering.The review further explores the opportunities,challenges,structural designs,and capacity enhancement strategies for next-generation all-solid-state Li-S batteries.Finally,future research directions are proposed to guide the continued development of high energy density Li-S battery technologies.展开更多
Metal–air batteries are an appealing option for energy storage,boasting a high energy density and environmental sustainability.Researchers focus on the catalyst design to solve the problem of sluggish cathode reactio...Metal–air batteries are an appealing option for energy storage,boasting a high energy density and environmental sustainability.Researchers focus on the catalyst design to solve the problem of sluggish cathode reaction kinetic.However,in some cases,where thermodynamic regulation is required,the role of catalysts is limited.Based on catalysts changing reaction kinetics,external fields can change the thermodynamic parameters of the reaction,further reduce overpotential,and accelerate the reaction rate.By selecting appropriate external fields and adjusting controllable variables,greater flexibility and potential are provided for reaction control.This paper reviews the basic principles by which several external fields influence metal–air batteries.Additionally,some design strategies of photoelectrode materials,the similarities and differences of different magnetic field effects,and some research progress of the ultrasonic field,stress field,and microwave field are systematically summarized.Multifield coupling can also interact and produce additive effects.Furthermore,introducing external fields will also bring about the problem of aggravated side reactions.This paper proposes some research methods to explore the specific reaction mechanism of external field assistance in more depth.The primary objective is to furnish theoretical direction for enhancing the performance of external field-supported metal–air batteries,thereby advancing their development.展开更多
基金support of the Australian Research Council through the ARC Research Hub for Advanced Manufacturing of Medical Devices(IH150100024).J.Venezuela is also supported by the Advance Queensland Industry Research Fellowship(AQIRF114-2019RD2).
文摘UHP Mg-Ge alloys was recently found to provide excellent corrosion resistance.This paper provides new insights on the mechanism of improved corrosion resistance of UHP Mg-Ge alloys in Hanks’solution.The studied UHP Mg-0.5Ge and UHP Mg-1Ge alloys showed superior corrosion resistance compared to UHP Mg and WE43,with the Mg-1Ge exhibiting the best corrosion performance.The exceptional corrosion resistance of the UHP alloy is attributed to(i)Mg_(2)Ge’s ability to suppress cathodic kinetics,(ii)Ge’s capability to accelerate the formation of a highly passive layer,and the(iii)low amounts of corrosion-accelerating impurities.
基金supported by the National Key Research and Development Program of China(grant no.2021YFB2500200)the National Natural Science Foundation of China(grant nos.92372115 and 22409006)the Beijing Natural Science Foundation(grant no.Z220020).
文摘Lithium-sulfur(Li-S)batteries have attracted significant attention due to their high theoretical energy density and cost-effectiveness,leading to notable progress in recent years.However,a huge gap between fundamental research and practical implementation remains a major obstacle to commercialization.This review first outlines critical design parameters and technical challenges in realizing practical high energy density Li-S batteries,and summarizes the recent advancements.It then systematically discusses potential strategies to address these challenges,focusing on cathode kinetics,electrolyte optimization,and anode interface engineering.The review further explores the opportunities,challenges,structural designs,and capacity enhancement strategies for next-generation all-solid-state Li-S batteries.Finally,future research directions are proposed to guide the continued development of high energy density Li-S battery technologies.
基金funded by the National Key R&D Program of China(2021YFB2012500)supported by the National Natural Science Foundation of China(No.52273081,No.52433002)the Young Talent Support Plan of Xi’an Jiaotong University.
文摘Metal–air batteries are an appealing option for energy storage,boasting a high energy density and environmental sustainability.Researchers focus on the catalyst design to solve the problem of sluggish cathode reaction kinetic.However,in some cases,where thermodynamic regulation is required,the role of catalysts is limited.Based on catalysts changing reaction kinetics,external fields can change the thermodynamic parameters of the reaction,further reduce overpotential,and accelerate the reaction rate.By selecting appropriate external fields and adjusting controllable variables,greater flexibility and potential are provided for reaction control.This paper reviews the basic principles by which several external fields influence metal–air batteries.Additionally,some design strategies of photoelectrode materials,the similarities and differences of different magnetic field effects,and some research progress of the ultrasonic field,stress field,and microwave field are systematically summarized.Multifield coupling can also interact and produce additive effects.Furthermore,introducing external fields will also bring about the problem of aggravated side reactions.This paper proposes some research methods to explore the specific reaction mechanism of external field assistance in more depth.The primary objective is to furnish theoretical direction for enhancing the performance of external field-supported metal–air batteries,thereby advancing their development.
