Research Article


2020, 13(7): 1867–1874


Superior wide-temperature lithium storage in a porous cobalt vanadate

Haoliang Chen1, Dan Yang1, Xueye Zhuang1, Dong Chen1, Weiling Liu2, Qi Zhang1, Huey Hoon Hng2, Xianhong Rui1,3 (*), Qingyu Yan2 (*), and Shaoming Huang1 (*)

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1 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 510006, China
2 School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
3 State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, China

Keywords: lithium-ion battery, anode material, cobalt vanadate, porous structure, wide-temperature performance
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Lithium ion batteries (LIBs) that can be operated under extended temperature range hold significant application potentials. Here in this work, we successfully synthesized Co2V2O7 electrode with rich porosity from a facile hydrothermal and combustion process. When applied as anode for LIBs, the electrode displayed excellent stability and rate performance in a wide range of temperatures. Remarkably, a stable capacity of 206 mAh·g−1 was retained after cycling at a high current density of 10 A·g−1 for 6,000 cycles at room temperature (25 °C). And even when tested under extreme conditions, i.e., −20 and 60 °C, the battery still maintained its remarkable stability and rate capability. For example, at −20 °C, a capacity of 633 mAh·g−1 was retained after 50 cycles at 0.1 A·g−1; and even after cycling at 60 °C at 10 A·g−1 for 1,000 cycles, a reversible capacity of 885 mAh·g−1 can be achieved. We believe the development of such electrode material will facilitate progress of the next-generation LIBs with wide operating windows.
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Superior wide-temperature lithium storage in a porous cobalt vanadate. Nano Res. 2020, 13(7): 1867–1874

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