Park, Dongjoo Park, Sangbaek Kim, Dong-Wan 2024-01-19T15:31:27Z 2024-01-19T15:31:27Z 2021-09-02 2021-02-01 1385-8947 https://pubs.kist.re.kr/handle/201004/117427 The insertion of an interlayer between the separator and cathode is considered a promising strategy to improve the conductivity as well as suppress the polysulfide shuttling effect in lithium-sulfur batteries (LSBs). However, the fundamental disadvantages of loss in weight/volume capacity and high cost upon the addition of an interlayer brings significant challenges. Herein, we report free-standing carbon nanofibers based on electrospun-cellulose (ACCF) as a lightweight (0.38 mg cm(-2)) and ultrathin (10 mu m) interlayer for LSBs. The unique semi carbonization of cellulose precursors provides a large surface area (2665.2 m(2) g(-1)) and high conductivity (6.5 S cm(-1)) to overcome the conductivity-surface area trade-off in conventional interlayers. Interestingly, the high wettability of ACCF is induced by the functional groups in cellulose, which decreases the electrolyte demand and enables the material to be stacked into multiple layers. This allows a conceptual study providing the scientific clue for the critical material factor in the LSB interlayer. Benefitting from its multi-functional characteristics, ACCF-modified cell provides a high specific capacity of 1403 mA h g(-1) and a remarkable areal capacity 4.83 mA h cm(-2) (S loading 4.6 mg cm(-2)) at 0.1C. Therefore, this innovative, cheap, and scalable ACCF can be used as a practical interlayer toward the commercialization of high-energy LSBs. English ELSEVIER SCIENCE SA Electrospun-cellulose derived free-standing carbon nano fi bers as lightweight, ultrathin, and stackable interlayers for lithium-sulfur batteries Article 10.1016/j.cej.2020.126596 1 CHEMICAL ENGINEERING JOURNAL, v.405 CHEMICAL ENGINEERING JOURNAL 405 scie scopus 000631342100004 2-s2.0-85089430811 Engineering, Environmental Engineering, Chemical Engineering Article Cellulose Interlayer Lithium-sulfur batteries Free-standing Electrospinning