Kim, A-Young Kim, Min Kyu Kim, Ji Young Wen, Yuren Gu, Lin Van-Duong Dao Choi, Ho-Suk Byun, Dongjin Lee, Joong Kee 2024-01-20T01:31:25Z 2024-01-20T01:31:25Z 2021-09-01 2017-06 1998-0124 https://pubs.kist.re.kr/handle/201004/122702 Lithium-sulfur battery has become one of the most promising candidates for next generation batteries, and it is still restricted due to the low sulfur conductivity, large volume expansion and severe polysulfide shuttling. Herein, we present a novel hybrid electrode with a ternary nanomaterial based on sulfur-impregnated multiwalled carbon nanotubes filled with ordered tin-monoxide nanoparticles (MWCNT-SnO/S). Using a dry plasma reduction method, a mechanically robust material is prepared as a cathode host material for lithium-sulfur batteries. The MWCNT-SnO/S electrode exhibits high conductivity, good ability to capture polysulfides, and small volume change during a repeated charge-discharge process. In situ transmission electron microscopy and ultraviolet-visible absorption results indicate that the MWCNT-SnO host efficiently suppresses volume expansion during lithiation and reduces polysulfide dissolution into the electrolyte. Furthermore, the ordered SnO nanoparticles in the MWCNTs facilitate fast ion/electron transfer during the redox reactions by acting as connective links between the walls of the MWCNTs. The MWCNT-SnO/S cathode with a high sulfur content of 70 wt.% exhibits an initial discharge capacity of 1,682.4 mAh.g(-1) at 167.5 mA.g(-1) (0.1 C rate) and retains a capacity of 530.1 mAh.g(-1) at 0.5 C after 1,000 cycles with nearly 100% Coulombic efficiency. Furthermore, the electrode exhibits the high capacity even at a high current rate of 20 C. English TSINGHUA UNIV PRESS COMPOSITE CATHODES CARBON NANOTUBES GRAPHENE OXIDE PERFORMANCE POLYSULFIDES EFFICIENT CAPACITY NANOCRYSTALS DEPOSITION ELECTRODE Ordered SnO nanoparticles in MWCNT as a functional host material for high-rate lithium-sulfur battery cathode Article 10.1007/s12274-016-1397-y 1 NANO RESEARCH, v.10, no.6, pp.2083 - 2095 NANO RESEARCH 10 6 2083 2095 scie scopus 000401320700022 2-s2.0-85010801670 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article COMPOSITE CATHODES CARBON NANOTUBES GRAPHENE OXIDE PERFORMANCE POLYSULFIDES EFFICIENT CAPACITY NANOCRYSTALS DEPOSITION ELECTRODE hybrid nanomaterial multiwalled carbon nanotube (MWCNT) ordered tin monoxide cathode high loading lithium-sulfur battery