Construction of porous CoTiO3 microrods with enhanced performance as lithium-ion battery anode

CoTiO3 microrods (CTO MRs) and CoTiO3 nanoparticles (CTO NPs) were successfully prepared by a solvothermal method followed by thermal annealing in air. The correlation between structure and electrochemical properties of both CTO NPs and CTO MRs was studied by a series of material analysis and characterizations, as well as electrochemical tests. When used as anode materials for lithium-ion batteries (LIBs), CTO MRs exhibit a higher discharge capacity (410 mAh g(-1) at 100 mA g(-1) after 200 cycles) and better rate capability, compared with those of CTO NPs. The enhanced electrochemical properties of CTO MRs can be attributed to good Li+ diffusion ability, large specific surface area and porous rod-like structure composed of a large number of NPs. This work provides a feasible strategy to develop a promising material with improved performance as anode for LIBs. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

CoTiO3 microrods and nanoparticles were prepared by a solvothermal method followed by thermal annealing. The microrods exhibited higher discharge capacity and better rate capability compared with nanoparticles, attributed to their good ion diffusion ability, large specific surface area, and porous rod-like structure. This work provides a feasible strategy for developing improved anode materials for lithium-ion batteries.