Amorphous nickel borate nanosheets as cathode material with high capacity and better cycling performance for zinc ion battery |
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| Affiliation: | 1. School of Physics and Technology, University of Jinan, Ji''nan 250022, China;2. School of Electronic and Information Engineering (Department of Physics), Qilu University of Technology (Shandong Academy of Sciences), Ji''nan 250353, China;1. Beijing Key Laboratory of Polymorphic Drugs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China;2. National Institutes for Food and Drug Control, Beijing 102629, China;3. Beijing City Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China;1. College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China;2. Institute of Flexible Electronics, Northwestern Polytechnical University, Xi''an 710072, China;3. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Zinc-ion batteries are under current research focus because of their uniqueness in low cost and high safety. However, the pursuing of high-performance cathode materials of aqueous Zinc ion batteries (AZBs) with low cost, high energy density and long cycle life has become the key problem to be solved. Herein we synthesized a series of amorphous nickel borate (AM-NiBO) nanosheets by varying corrosion time with in-situ electrochemical corrosion method. The AM-NiBO-T13 as electrode material possesses a high areal capacity of 0.65 mAh/cm2 with the capacity retention of 95.1% after 2000 cycles. In addition, the assembled AM-NiBO-T13//Zn provides high energy density (0.77 mWh/cm2 at 1.76 mW/cm2). The high areal capacity and better cycling performance can be owing to the amorphous nanosheets structure and the stable coordination characteristics of boron and oxygen in borate materials. It shows that amorphous nickel borate nanosheets have great prospects in the field of energy storage. |
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