Li, Wenying Yoon, Dohyeon Hwang, Jieun Chang, Wonyoung Kim, Jaehoon 2024-01-20T06:01:08Z 2024-01-20T06:01:08Z 2021-09-05 2015-10-20 0378-7753 https://pubs.kist.re.kr/handle/201004/124875 A simple, one-pot route was developed for the synthesis of SnO2-reduced graphene oxide (RGO) composites. Simultaneous reduction of graphene oxide (GO) and heterogeneous nucleation and growth of SnO2 on the surface of RGO under the supercritical methanol medium resulted in uniform deposition of well-dispersed SnO2 nanoparticles on the RGO sheets. In comparison with the bare SnO2 nanoparticles and bare RGO sheets, the as-synthesized SnO2-RGO composites exhibited enhanced Li-ion storage and high rate performance. The SnO2-RGO composite with a SnO2 loading of 58 wt% delivered a reversible discharge capacity of 776 mAh g(-1) after 70 cycles at a current density of 0.1 A g(-1) and a rate performance of 147 rnAh g(-1) at a high current density of 5 A g(-1). In addition, after 1000 continuous cycles at I A g(-1), the composite electrode exhibited a reversible discharge capacity as high as 531 mAh g(-1) with excellent capacity retention. The enhanced long-term cyclability and high-rate performance of the SnO2-RGO composite can be attributed to the effective confinement of SnO2 nanoparticles on the RGO sheets, and thus, the interparticle agglomeration and volume change associated with alloying-dealloying of SnO2 during cycling can be prevented and cell integrity can be maintained. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved. English ELSEVIER SUPERCRITICAL WATER CATHODE APPLICATION SNO2 NANOPARTICLES CARBON NANOTUBES RATE CAPABILITY LI-STORAGE ELECTRODE NANOMATERIALS NANOCRYSTALS NANOSHEETS One-pot route to synthesize SnO2-Reduced graphene oxide composites and their enhanced electrochemical performance as anodes in lithium-ion batteries Article 10.1016/j.jpowsour.2015.06.025 1 JOURNAL OF POWER SOURCES, v.293, pp.1024 - 1031 JOURNAL OF POWER SOURCES 293 1024 1031 scie scopus 000358809700118 2-s2.0-84931261327 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article SUPERCRITICAL WATER CATHODE APPLICATION SNO2 NANOPARTICLES CARBON NANOTUBES RATE CAPABILITY LI-STORAGE ELECTRODE NANOMATERIALS NANOCRYSTALS NANOSHEETS SnO2 Reduced graphene oxide Supercritical methanol Composite Lithium-ion batteries