Yao Minjie, Wang Rui, Zhao Zifang, Liu Yue, Niu Zhiqiang, Chen Jun
Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry , Nankai University , Tianjin 300071 , P. R. China.
ACS Nano. 2018 Dec 26;12(12):12503-12511. doi: 10.1021/acsnano.8b06936. Epub 2018 Dec 6.
The recent boom in flexible and wearable electronic devices has increased the demand for flexible energy storage devices. The flexible lithium-sulfur (Li-S) battery is considered to be a promising candidate due to its high energy density and low cost. Herein, a flexible Li-S battery was fabricated based on an all-in-one integrated configuration, where a multiwalled carbon nanotubes/sulfur (MWCNTs/S) cathode, MWCNTs/manganese dioxide (MnO) interlayer, polypropylene (PP) separator, and Li anode were integrated together by combining blade coating with vacuum evaporation methods. Each component of the all-in-one structure can be seamlessly connected with the neighboring layers. Such an optimal interfacial connection can effectively enhance electron- and/or load-transfer capacity by avoiding the relative displacement or detachment between two neighboring components at bending strain. Therefore, the flexible all-in-one Li-S batteries display fast electrochemical kinetics and have stable electrochemical performance under different bending states.
近年来，柔性和可穿戴电子设备的蓬勃发展增加了对柔性储能设备的需求。柔性锂硫（Li-S）电池因其高能量密度和低成本而被认为是一种很有前途的候选者。在此，基于一体化集成结构制备了一种柔性Li-S电池，其中多壁碳纳米管/硫（MWCNTs/S）阴极、MWCNTs/二氧化锰（MnO）中间层、聚丙烯（PP）隔膜和锂阳极通过刮涂与真空蒸发方法相结合而集成在一起。一体化结构的每个组件都可以与相邻层无缝连接。这种优化的界面连接可以通过避免两个相邻组件在弯曲应变下的相对位移或分离，有效地提高电子和/或负载转移能力。因此，柔性一体化Li-S电池显示出快速的电化学动力学，并且在不同弯曲状态下具有稳定的电化学性能。
