Kim, Hun Hwang, Jang-Yeon Bang, Sangin Jung, Hun-Gi Sun, Yang-Kook 2024-01-19T12:02:53Z 2024-01-19T12:02:53Z 2022-05-12 2022-05 2050-7488 https://pubs.kist.re.kr/handle/201004/115230 The realization of practical lithium-sulfur (Li-S) batteries is contingent on the development of innovative electrode designs having high energy, high power and a long lifespan. Herein, we propose a compact, high-performance, 2D sulfurized-polyacrylonitrile/graphene (2D-SPAN/G) cathode for practical Li-S batteries. A 2D-SPAN/G cathode with a high active-mass (sulfur) loading of 10 mg cm(-2) is successfully prepared via high-pressure pelletization. In the 2D-SPAN/G cathode, graphene nanosheets function as a robust and conductive scaffold, which uniformly encapsulates SPAN nanoparticles, providing structural integrity and enabling the high electrochemical utilization of sulfur. The combination of the stabilized lithium metal anode, a modified electrolyte (consisting of 1 M LiPF6 and 0.05 M LiDFOB in EMC : FEC (3 : 1 (v/v))) and a 2D-SPAN/G cathode delivers a high areal capacity of 11 mA h cm(-2) and demonstrates outstanding cycling stability over 300 cycles at a high current density of 4 mA cm(-2). Moreover, the excellent electrochemical performance of a scaled-up, pouch-type Li-S battery featuring a 2D-SPAN/G cathode demonstrates the viability of the proposed cathode. The reversibility of the Li+-ion storage mechanism of the 2D-SPAN/G cathode is confirmed using operando Raman spectroscopy. English Royal Society of Chemistry Geometrical engineering of a SPAN-graphene composite cathode for practical Li-S batteries Article 10.1039/d2ta01398c 1 Journal of Materials Chemistry A, v.10, no.20, pp.10844 - 10853 Journal of Materials Chemistry A 10 20 10844 10853 N scie scopus 000789907300001 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article SULFURIZED-POLYACRYLONITRILE CATHODE LITHIUM STORAGE PERFORMANCE CARBONATE NANOCOMPOSITE ACCELERATOR ELECTROLYTE NANOFIBERS BINDER