In recent years,sodium-ion batteries(SIBs)have attracted wide interest.Research on high-energy,highly reversible,low cost,and environmentally-friendly positive electrodes is crucial for the development of new generation of SIBs.O3-type layered oxide has unique advantages in energy density,operating voltage,and synthesis cost,and is currently the most concerned cathode material for SIBs.However,the development of the materials still meets some challenges such as irreversible structural phase transitions during charge/discharge cycles,high Na+diffusion barriers,and poor air stability.This article comprehensively overviews and evaluates the research status of O3-type layered materials from the aspects of material design,phase transition evolution,electrochemical reaction mechanisms and interfacial modification strategy,and the challenges faced in this field.
关键词
钠离子二次电池/正极材料/层状过渡金属氧化物/O3相材料
Key words
sodium-ion battery/cathode/layered transition-metal oxide/O3 type cathode
维普
万方数据