材料科学
多硫化物
阴极
电解质
化学工程
锂硫电池
电池(电)
纳米技术
化学
电极
量子力学
物理
工程类
物理化学
功率(物理)
作者
Hai Anh Hoang,Dukjoon Kim
出处
期刊:Small
[Wiley]
日期:2022-07-30
卷期号:18 (34)
被引量:12
标识
DOI:10.1002/smll.202202963
摘要
Abstract With its superior theoretical energy density as well as abundance and environment‐friendliness, the lithium–sulfur battery (LiSB) is a potential candidate to replace the traditional energy storage and generation systems. An innovative design is proposed for the high‐performance solid‐state LiSB system by combining the multi‐functional cathode comprising the sulfur‐loaded Al 2 O 3 ‐modified carbon nanotubes (S@ACNTs) and the flexible hybrid solid electrolyte (HSE). Assembled with S@ACNTs active material, the polycation poly(diallyldimethylammonium bis(trifluoromethylsulfonyl)imide) (PDATFSI) binder exhibits high Li + conductivity of 0.45 mS cm −1 at room temperature, good thermal stability up to 450 °C, high adhesive strength with aluminum current collector up to 24 MPa, sustainable non‐flammability, and desirable flexibility. When assembled with HSE membrane, the S@ACNTs/PDATFSI–60IL cathode layer demonstrates effective polysulfide trapping behavior and superior compatibility (65 Ω), resulting in high discharge capacity of 1203 mAh g −1 at 0.2 C in the 1st cycle, and long‐term stability up to 91.69% of the discharge capacity after 200 cycles of charge/discharge process.
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