锌离子电容器正极材料研究进展

Research progress in cathode materials for zinc ion capacitors

作为新型储能设备,水系锌离子电容器具有高功率密度、大能量密度、长循环寿命和高安全性等优异性能,在民用电子设备和军用电气化武器装备领域具有极高的应用前景,有望成为代替锂离子电池的新一代储能方案。本文系统梳理了活性炭正极材料、碳纳米管正极材料、石墨烯正极材料和生物质碳正极材料等碳基正极材料的储锌能力,总结了MXene正极材料在锌离子电容器领域的研究进展,归纳了过渡金属氧化物正极材料的锌离子储存性能,指出开发高容量、耐高压、耐低温正极材料的必要性与紧迫性。

As a new type of energy storage device,aqueous zinc-ion capacitors(AZICs)have excellent performance,such as high power density,high energy density,long cycle life and high safety.AZICs have a high application prospect in the field of civil electronic equipment and military electrified weapons and equipment,and are expected to become a new generation of energy storage scheme instead of lithium-ion batteries.In this paper,the recent advances of carbon-based materials for zinc ion capacitors,such as activated carbon,carbon nanotubes,graphene and biomass derived carbon were summarized.The zinc ion storage performance of MXenes was analyzed in detail,and the energy storage mechanisms of transition metal oxides were revealed.It is pointed out that developing the cathode materials with high capacity,high voltage tolerance and low temperature adaptability is of great importance.