The strategies to improve the layer structured cathodes for aqueous multivalent metal ions batteries

• Main Authors: Wu, Chen, Tan, Huiteng, Huang, Wenjing, Liu, Chuntai, Wei, Weifeng, Chen, Libao, Yan, Qingyu
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Materials::Energy materials; Aqueous Batteries; Morphological Engineering
• Online Access: https://hdl.handle.net/10356/154703
• Institution: Nanyang Technological University

Aqueous multivalent metal ion batteries (AMMIBs), with their unique strengths of high safety, low cost and the characteristic of multiple electron transfers, have been widely applied in the fields of wearable devices, consumer electronics and electric vehicles. Layer structured materials are regarded as promising electrode materials for AMMIBs owing to their tunable interlayer spacing and the ability to accommodate other guest ions or molecular. However, their large-scale application is impeded by several issues including dissolution, structural instability, low conductivity and poor electrochemical properties. This review highlights various strategies aimed to solve these issues for layer structured materials. It begins with the brief introduction on the fundamental characteristics of the AMMIBs and challenges facing layer structured materials. Subsequently, one section is to elaborate several strategies specific to layer structured materials for AMMIBs in detail with corresponding progress highlighted, which pave the way to high-performance AMMIBs. The last, a brief summary of the strengths and weaknesses of the above strategies are presented and focus is placed on possible direction for further improvements in this field.