Affiliation:
1. Lanzhou University of Technology
Abstract
Abstract
The lithium-rich manganese-based material Li1.2Mn0.54Ni0.13Co0.13O2 is currently the most promising anode material due to its high capacity and low cost. However, the material still suffers from severe capacity degradation and low multiplicity performance. After thiourea treatment, the electrochemical performance of the material is improved. Through elemental and morphological characterization, the treated crystals show more dispersed particles and a small amount of Sulphur doped on the surface. Various electrochemical tests were performed on the cells and the 3wt% thiourea treated cells showed improved discharge specific capacity and cycling performance compared to the non-thiourea treated cells. Moreover, the polarity of the battery was reduced and the impedance decreased. The specific capacity of the first cycle was 274.2mAh/g at 0.1C. The specific capacity was 236mAh/g at 0.5C and the capacity retention rate was 72.46% after 100 cycles.
Publisher
Research Square Platform LLC
Reference39 articles.
1. The effects of process parameters on the properties of manganese-rich carbonate precursors: A study of co-precipitation synthesis using semi-batch reactors;Ngoepe N;Chemical Engineering Science,2021
2. Yang, Y., Gao, C., Luo, T., Song, J., Yang, T., Wang, H., Zhang, K., Zuo, Y., Xiao, W., Jiang, Z., Chen, T., & Xia, D. (2023). Unlocking The Potential of Li-rich Mn‐based Oxides for High‐rate Rechargeable Lithium‐ion Batteries. Advanced Materials, 2307138.
3. Reaction Mechanisms of Layered Lithium-Rich Cathode Materials for High‐Energy Lithium‐Ion Batteries;Zhao S;Angewandte Chemie International Edition,2021
4. Surface modifications of electrode materials for lithium-ion batteries: status and trends;Mauger A;Ionics,2014
5. Review on Challenges and Recent Advances in the Electrochemical Performance of High Capacity Li- and Mn‐Rich Cathode Materials for Li‐Ion Batteries;Nayak PK;Advanced Energy Materials,2018