Electrode Materials for Flexible Lithium-Ion Battery

With the development of science and technology, great progress has been made in portable electronic products, especially in wearable devices. Flexible battery, as the core component of portable electronic products, has attracted attention of more and more researchers. Lithium-ion battery is used as the main power source in a variety of products because of its good cycle performance and long life span. In order to make portable electronic products flexible and miniaturized, the development of flexible lithium-ion batteries with high energy density can be an urgent issue. Flexible electrode materials are regarded as the important research direction because they are key materials for flexible lithium-ion battery. The article describes recent progress on researches about electrode materials for flexible lithium-ion battery, including integrated flexible electrode and new macro-flexibility electrode structure design. The carbon-based materials and Mxene-based materials all belong to integrated flexible electrode with electrochemical activity. The polymer-based materials, textile-based materials and metal-based materials all belong to integrated flexible electrode based on non-electrochemical activity. The new macro flexibility electrode structure design meets the needs that wearable devices are woven and tolerable of large scale deformation. This paper analyzes and discusses existing problems of flexible electrodes in order to provide new ideas for researches about flexible lithium-ion battery with high energy density in future.