首页|Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc-Ion Batteries
Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc-Ion Batteries
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Aqueous zinc-ion batteries(AZIBs)are regarded as promising electrochemical energy storage devices owing to its low cost,intrinsic safety,abundant zinc reserves,and ideal specific capacity.Compared with other cathode materials,manganese dioxide with high voltage,environmental protection,and high theoretical specific capacity receives considerable attention.However,the problems of structural instability,manganese dissolution,and poor electrical conductivity make the exploration of high-performance manganese dioxide still a great challenge and impede its practical applications.Besides,zinc storage mechanisms involved are complex and somewhat controversial.To address these issues,tremendous efforts,such as surface engineering,heteroatoms doping,defect engineering,electrolyte modification,and some advanced characterization technologies,have been devoted to improving its electrochemical performance and illustrating zinc storage mechanism.In this review,we particularly focus on the classification of manganese dioxide based on crystal structures,zinc ions storage mechanisms,the existing challenges,and corresponding optimization strategies as well as structure-performance relationship.In the final section,the application perspectives of manganese oxide cathode materials in AZIBs are prospected.
Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation,Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering Xi'an University of Technology,Xi'an 710048,China
Engineering Research Center of Conducting Materials and Composite Technology,Ministry of Education,Xi'an 710048,China
Center for International Cooperation on Designer Low-carbon &Environmental Materials(CDLCEM),Zhengzhou University,Zhengzhou 450001,C
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Basic Research Plan in Shaanxi Province of ChinaChina Postdoctoral Science FoundationScience and Technology Planning Project of Beilin DistrictYoung Talents Supporting Project of Xi'an Science Association
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