Enhancement of LiMn₂O₄ Cathode Material Stability by LiB₃O₅ Coating and Synchronized B Doping

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Spinel manganese lithium oxide (LMO) has garnered considerable attention as a promising cathode material for lithium-ion batteries, because of its low cost, superior safety, and cycling stability. However, rapid capacity fading, particularly at increased temperatures, poses challenge to widespread application. To enhance the stability LMO, we employ straightforward method coat LiB3O5, characterized by chemical electrochemical stability, an appropriate window, excellent conductivity, onto surface LMO particles. Among all coated samples, one with 2% LiB3O5 (2% LBO@LMO) demonstrates most remarkable performance. After 300 cycles 25 °C rate 1C, retention was 88.55%, compared 58.47% uncoated LMO. At 55 LBO@LMO sample maintains 77.38% after 100 while retains only 58.37%. Further investigation into mechanism underlying enhanced performance reveals that coating simultaneously induces boron doping, altering valence state distribution Mn elements. Additionally, mitigates particle cracking, prevents dissolution, increases conductivity rate. This study paves new avenues utilization borate materials promotes broader adoption materials.

Language: Английский

LiFePO4 (LFP) coating and blending on Li1.05(Ni0.88Co0.08Mn0.04)O2 (Ni-rich NCM): A strategy for reduced gas generation

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180771 - 180771

Published: May 1, 2025

Language: Английский