MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
School of Materials Science and Engineering, Hunan Provincial Collaborative Innovation Center for High-efficiency Utilization of Wood and Bamboo Resources, Central South University of Forestry and Technology, Changsha, 410004, Hunan, P. R. China.
Adv Mater. 2017 Jul;29(26). doi: 10.1002/adma.201700274. Epub 2017 Apr 27.
Advanced flexible batteries with high energy density and long cycle life are an important research target. Herein, the first paradigm of a high-performance and stable flexible rechargeable quasi-solid-state Zn-MnO battery is constructed by engineering MnO electrodes and gel electrolyte. Benefiting from a poly(3,4-ethylenedioxythiophene) (PEDOT) buffer layer and a Mn -based neutral electrolyte, the fabricated Zn-MnO @PEDOT battery presents a remarkable capacity of 366.6 mA h g and good cycling performance (83.7% after 300 cycles) in aqueous electrolyte. More importantly, when using PVA/ZnCl /MnSO gel as electrolyte, the as-fabricated quasi-solid-state Zn-MnO @PEDOT battery remains highly rechargeable, maintaining more than 77.7% of its initial capacity and nearly 100% Coulombic efficiency after 300 cycles. Moreover, this flexible quasi-solid-state Zn-MnO battery achieves an admirable energy density of 504.9 W h kg (33.95 mW h cm ), together with a peak power density of 8.6 kW kg , substantially higher than most recently reported flexible energy-storage devices. With the merits of impressive energy density and durability, this highly flexible rechargeable Zn-MnO battery opens new opportunities for powering portable and wearable electronics.
具有高能量密度和长循环寿命的先进柔性电池是一个重要的研究目标。在此，通过工程化 MnO 电极和凝胶电解质，构建了首例高性能和稳定的柔性可再充电准固态 Zn-MnO 电池。得益于聚（3,4-亚乙基二氧噻吩）（PEDOT）缓冲层和基于 Mn 的中性电解质，所制备的 Zn-MnO@PEDOT 电池在水系电解质中表现出显著的 366.6 mA h g 的容量和良好的循环性能（300 次循环后 83.7%）。更重要的是，当使用 PVA/ZnCl₂/MnSO₄凝胶作为电解质时，所制备的准固态 Zn-MnO@PEDOT 电池仍然具有高度可再充电性，在 300 次循环后保持其初始容量的 77.7%以上，库仑效率接近 100%。此外，这种柔性准固态 Zn-MnO 电池实现了令人钦佩的 504.9 Wh kg 的能量密度（33.95 mWh cm），以及 8.6 kW kg 的峰值功率密度，显著高于最近报道的大多数柔性储能设备。具有令人印象深刻的能量密度和耐久性的优势，这种高度灵活的可再充电 Zn-MnO 电池为便携式和可穿戴电子设备的供电开辟了新的机会。
