The influence of 3d element doping on the spent LiCoO2

Start year: 2025

Summary: Recently, recycling spent lithium-ion battery (LIBs) cathodes have gained renewed interest for novel energy storage system due to their cost-effectiveness and environmental friendliness. It is predicted that by 2024, the global LIB demand for only electric vehicles will reach $221 billion. However, the lifetime of LIBs is usually 3~8 years, and more than 2 million tons of spent LIBs will produce each year, making it an attractive choice for energy storage solutions[1]. Cathode materials, as the part of highest recycling value, play a crucial role in determining the overall electrochemical performance of LIBs. This study focuses on recycling spent lithium-ion battery (LIBs) cathodes by doping and coating oxides, essential for cost-effective and environmentally-friendly energy storage. We address the challenges of structural degradation in spent cathode. This includes using structural pillars and surface coating to enhance structure integrity and cycling stability after regeneration. In-situ high-temperature synchrotron powder diffraction (PD) is employed to provide detailed insights into phase evolution and strain variations in spent cathodes during the process of regeneration with temperature rising, contributing significantly to the development of more stable and efficient LIBs.

Acknowledgement of Country

UTS acknowledges the Gadigal people of the Eora Nation, the Boorooberongal people of the Dharug Nation, the Bidiagal people and the Gamaygal people, upon whose ancestral lands our university stands. We would also like to pay respect to the Elders both past and present, acknowledging them as the traditional custodians of knowledge for these lands.