Oxyvanite V3O5: A new intercalation‐type anode for lithium‐ion battery
Dong Chen,
Huiteng Tan,
Xianhong Rui,
Qi Zhang,
Yuezhan Feng,
Hongbo Geng,
Chengchao Li,
Shaoming Huang,
Yan Yu
Affiliations
Dong Chen
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Huiteng Tan
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Xianhong Rui
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Qi Zhang
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Yuezhan Feng
Key Laboratory of Materials Processing and Mold (Zhengzhou University) Ministry of Education, Zhengzhou University Zhengzhou China
Hongbo Geng
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Chengchao Li
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Shaoming Huang
Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy, Guangdong University of Technology Guangzhou Guangdong China
Yan Yu
Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences (CAS) University of Science and Technology of China Hefei Anhui China
Abstract In the present study, V3O5 microcrystals that synthesized via vacuum calcination are employed as anodes for lithium‐ion batteries (LIBs) for the first time. Despite the widely observed sluggish reaction kinetics and poor cycling stability in most micro‐sized transition metal oxides, the V3O5 microcrystals exhibit excellent rate capability (specific capacities of 144 and 125 mAh g−1 are achieved at extremely high current densities of 20 and 50 A g−1, respectively) and long‐term cycling performance (specific capacity of 117 mAh g−1 is sustained over 2000 cycles at 50 A g−1). It is ascribed to the three‐dimensional open‐framework structure of the V3O5 microcrystals as a major factor in dictating the fast reaction kinetics (lithium diffusion coefficient: ~10−9 cm2 s−1). In addition, significant insight into the reaction mechanism of the V3O5 microcrystals in concomitant its phase evolution are obtained from ex‐situ XRD study, revealing that the V3O5 microcrystals undergo intercalation reaction with insignificant structural change in response to lithiation/delithiation.
