材料科学
钠离子电池
储能
电池(电)
电解质
电化学
离子
阳极
锂(药物)
光电子学
超短脉冲
化学工程
阴极
电极
锂离子电池
钠
纳米技术
作者
Wenyu Zhao,Helin Wang,Shaowen Li,Xiaoyu Tang,Min Zhang,Ali Mustehsin,Miao Bai,Siyuan Liu,Changchun Sun,Yue Ma
摘要
Flexible sodium-ion battery (SIB) design is hampered by the incompatible component integration at the device level, especially in consideration of the sluggish Na+ diffusion kinetics, complex assembly technology and the electrode pulverization upon mechanical loadings. Herein, we develop a scalable spin-coating approach, through casting the cathode and anode slurries onto the both sides of an AlOx modified polyethylene (AlOx-MPE) separator, to construct a layer-stacked thin film battery configuration. The composite anode involves hierarchical structure design by vertically anchoring metallic phase (1T) MoS2 nanosheets on an interconnected nitrogen-doped carbon framework (namely 1T-MoS2/NCF). For the cathode part, NASICON-type NaVPO4F was directly integrated with the AlOx-MPE separator as the current-collector-free electrode. Upon the precise tuning of the areal capacity ratio of negative to positive electrodes (N/P ratio), the film battery prototype delivers a robust cyclability in the different deformation states as well as a maximized power output of ∼1049 W kg−1. This integrated, thin-film battery configuration demonstrates tremendous potential in future flexible electronics.
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