Binder-induced ultrafast ■-intercalation toward a high-voltage,high-power and long-cycling zinc–graphite dual-ion battery
作者机构：Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Material Science and ChemistryChina University of Geosciences College of Resources and EnvironmentSouth-Central Minzu University School of Transportation Science and EngineeringBeihang University
出 版 物：《Rare Metals》 (稀有金属(英文版))
年 卷 期：2024年第43卷第10期
页 面：5017-5029页
核心收录：
基 金：financially supported by the National Natural Science Foundation of China (No.22279122) Shenzhen Science and Technology Program (No.JCYJ20220530162402005) the Research on High Power Flexible Battery in All Sea Depth (2020-XXXX-XX-246-00) the Research Fund Program of Hubei Key Laboratory of Resources and EcoEnvironment Geology (No.HBREGKFJJ-202314) and the Fundamental Research Funds for the Central Universities,South-Central Minzu University (No.CZQ21013)
主 题：Binder Graphite High-voltage PF6−-de-/intercalation Zn-ion batteries
摘 要：Metallic zinc is an ideal anode material owing to its high theoretical capacity (819 mAh·g-1),ecofriendliness,low cost and high safety,which have driven fast development of Zn-ion batteries （ZIBs）.However,the practical application of current ZIBs is significantly restricted by irregular dendrite growth of zinc anode and the low working voltage （usually2 V） of cathode ***,we report a high-voltage Zn-based dualion battery （DIB）,which is constructed by a graphite cathode,a Zn anode,and 3 M LiPF6in the ethyl methyl carbonate （EMC） *** the corrosion interaction of Li+ions,Zn2+can be easily dissolved from Zn anode into the electrolyte to enable dendrite-free Zn2+plating/stripping at the ***,an aqueous carboxymethyl cellulose （CMC） binder is employed to generate a robust cathode electrolyte interface （CEI） layer on the graphite cathode,which renders ultrafast PF6--de-/intercalation into *** resultant Zn–graphite DIB operates stably at a high cut off voltage of 3.2 V,corresponding to an average output voltage of 2.2 *** 9000cycles at 5C,the high capacity retention of 95.9% can be achieved with～100%Coulomb *** on the mass of cathode material,our Zn–graphite battery exhibits ultrafast rate capability （60 C,a discharge time of 44 s） and high energy/power densities (208 Wh·kg-1at 214 W·kg-1;142 Wh·kg-1at 8692 W·kg-1),which holds great promise for large-scale energy storage.
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