【摘 要】
:
The rapid development of flexible electronic devices requires the design of flexible energy-storage devices.Lithium-sulfur (Li-S) batteries are attracting much interest due to their high energy density.Therefore,flexible Li-S batteries with high areal cap
【机 构】
:
Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education), Renewable Energy Conve
论文部分内容阅读
The rapid development of flexible electronic devices requires the design of flexible energy-storage devices.Lithium-sulfur (Li-S) batteries are attracting much interest due to their high energy density.Therefore,flexible Li-S batteries with high areal capacity are desired.Herein,we fabricated freestanding reduced graphene oxide-sulfur (RGO@S) composite films with a cross-linked structure using a blade coating technique,followed by a subsequent chemical reduction.The porous cross-linked structure endows the com-posite films with excellent electrochemical performance.The batteries based on RGO@S composite films could exhibit a high discharge capacity of 1381 mAh/g at 0.1 C and excellent cycle stability.Furthermore,the freestanding composite film possesses excellent conductivity and high mechanical strength.Therefore,they can be used as the cathodes of flexible Li-S batteries.As a proof of concept,soft-packaged Li-S batteries were assembled and remained stable electrochemical performance under different bending states.
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