Qiu Nan, Chen Hong, Yang Zhaoming, Sun Sen, Wang Yuan
Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University Chengdu 610064 People's Republic of China
RSC Adv. 2018 Apr 26;8(28):15703-15708. doi: 10.1039/c8ra01982g. eCollection 2018 Apr 23.
A low-cost and eco-friendly system based on a manganese-based complex cathode and zinc anode was demonstrated. The cathode is able to reversibly (de-)insert Zn ions, providing a high capacity of 248 mA h g at 0.1 A g. TEM and XRD were utilized to determine the electrochemical mechanism of this high capacity cathode. Moreover, the contribution of pre-added Mn in electrolyte to the capacity was revealed, and nearly 18.9% of the capacity is ascribed to the contribution of pre-added Mn. With the help of additive, this aqueous rechargeable battery shows outstanding electrochemical property. Its cycling performance is good with 6% capacity loss after 2000 cycles at 4.0 A g, highlighting it as a promising system for aqueous rechargeable battery applications.
展示了一种基于锰基复合阴极和锌阳极的低成本且环保的系统。该阴极能够可逆地（脱）嵌入锌离子，在0.1 A g时提供248 mA h g的高容量。利用透射电子显微镜（TEM）和X射线衍射（XRD）来确定这种高容量阴极的电化学机制。此外，揭示了电解质中预添加的锰对容量的贡献，近18.9%的容量归因于预添加的锰的贡献。在添加剂的帮助下，这种水系可充电电池表现出出色的电化学性能。其循环性能良好，在4.0 A g下循环2000次后容量损失6%，突出了它作为水系可充电电池应用的一个有前景的系统。
