Recent Development and Future Perspective for Multivalent Ion Batteries

In recent years, rechargeable batteries based on multivalent cations (Al3+, Mg2+, Ca2+, Zn2+, etc.) have attracted extensive attention due to their high natural abundance, low cost and good chemical safety. In this review, some achievements and breakthrough progress in the study of multivalent ion batteries, both from home and abroad research teams were summarized. It is found that most researches are focused on the development of anode and cathode materials and the optimization of electrolyte components in aluminum-ion and magnesium-ion batteries. However, there are still some tricky problems to be solved in the rapid development of multivalent ion batteries, such as the structural instability of the cathode materials, the slow migration of ions, the passivation and dendrite problems of the anodes, and the corrosion of the electrolytes. Finally, the future perspective of multivalent ion batteries is prospected. In the later study, looking for multivalent ion battery model with high energy density is the main research direction, in which we could make some explorations and experiments on the modification to the cathode and anode structures to improve corresponding performance, as well as the optimization and matching of multicomponent electrolytes to obtain high-performance multivalent ion batteries. © 2021, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.