A high-capacity and long-lifespan SnO_(2)@K-MnO_(2) cathode material for aqueous zinc-ion batteries
作者机构：College of Chemistry and Chemical EngineeringKey Laboratory of Hexi Corridor Resources Utilization of GansuHexi UniversityZhangye 734000China Department of ChemistryShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai 200433China
出 版 物：《Frontiers of Materials Science》 (材料学前沿（英文版）)
年 卷 期：2024年第18卷第3期
页 面：45-57页
核心收录：
基 金：supported by the Science and Technology Planning Project of Gansu Province(22JR5RG569) the Faculty Research Grants Awarded by Principal's Funds(CXTD2022008)
主 题：zinc ion battery SnO_(2)@K-MnO_(2) cathode material energy storage mechanism
摘 要：Aqueous Zn/MnO_(2) rechargeable zinc-ion batteries(ZIBs)possess potential applications in electrochemical energy storage due to their safety,low cost,and environmental ***,manganese dioxide as the cathode material has poor cycle stability and low *** this work,the SnO_(2)@K-MnO_(2)(SMO)composite was prepared using the hydrothermal method followed by the treatment with SnCl_(2) sensitization,and its electrochemical characteristics were examined using SMO as the cathode material for *** reversible specific capacity reaches 298.2 mA·h-g^(-1) at 0.5A·g^(-1),and an excellent capacity retention of 86%is realized after 200 cycles,together with a high discharge capacity of 105 mA·h·g^(-1) at 10 A·g^(-1) and a long-term cycling life of over 8000 cycles with no apparent capacity *** cathode exhibits a long cycle life up to 2000 cycles at 2 Ag^(-1) with the mass loading of 5 mg·cm^(-2),and the battery maintains the capacity of 80%.The reversible co-embedding mechanism of H^(+)/Zn^(2+) in such a ZnlSMO battery was confirmed by XRD and SEM during the chargeldischarge *** work can enlighten and promote the development of advanced cathode materialsforZIBs.
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