Synthesis of Porous Hollow Spheres Co@TiO2-x-Carbon Composites for Highly Efficient Lithium-Ion Batteries

Chunyong Liang; Zhongliang Huang; Hongshui Wang; Tai Yang; Ning Liu; Tingdi Liao; Feng Wang; Xi Wang

doi:10.1186/s11671-022-03719-y

Synthesis of Porous Hollow Spheres Co@TiO_2-x-Carbon Composites for Highly Efficient Lithium-Ion Batteries

Nanoscale Res Lett. 2022 Sep 5;17(1):86. doi: 10.1186/s11671-022-03719-y.

Authors

Chunyong Liang^#^{1

2

3}, Zhongliang Huang^#¹, Hongshui Wang², Tai Yang², Ning Liu⁴, Tingdi Liao¹, Feng Wang^{5

6}, Xi Wang⁷

Affiliations

¹ Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000, Fujian, China.
² State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China.
³ Changzhou Blon Minimally Invasive Medical Devices Technology Co. Ltd., Changzhou, 213100, Jiangsu, China.
⁴ State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China. ningliu1985@hebut.edu.cn.
⁵ Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000, Fujian, China. fwang99@126.com.
⁶ College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou, 362000, Fujian, China. fwang99@126.com.
⁷ China Center for Information Industry Development, Beijing, 100048, China. wangxi@ccidthinktank.com.

^# Contributed equally.

Abstract

The hollow TiO₂ anode material has received great attention for next-generation LIBs because of its excellent stability, environmental friendly, and low volume change during lithiation/delithiation. However, there are some problems associated with the current anatase TiO₂ anode materials in practical application owing to low lithium-ion diffusivity and poor reversible theoretical capacities. The introduction of defects has been turned out to be a significant and effective method to improve electronic conductivity, especially oxygen vacancies. In this paper, a facile hydrothermal reaction and subsequent chemical vapor deposition method were successfully used to fabricate Co@TiO_2-x-carbon hollow nanospheres. These results suggest that the synthesized product exhibits good rate performance and superior cycling stability.

Keywords: Chemical vapor deposition; Lithium-ion batteries; Oxygen vacancies; Titanium dioxide.

Abstract

Grants and funding