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연구성과 > 금주의 우수논문

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SCI Article

Synthesis and Electrochemical Reaction of Tin Oxalate-Reduced Graphene Oxide Composite Anode for Rec
성명 선양국 (-)
소속 공과대학 에너지공학과
캠퍼스 -
우수선정주 2017년 09월 2째주
Author 선양국 (Dept Energy Engn);
Corresponding Author Info Myung, ST (reprint author), Sejong Univ, Dept Nanotechnol & Adv Mat Engn, Seoul 05006, South Korea.; Myung, ST (reprint author), Sejong Univ, Sejong Battery Inst, Seoul 05006, South Korea.; Sun, YK (reprint author), Hanyang Univ, Dept Energy Engn, Seoul 0
E-mail 이메일 아이콘yksun@hanyang.ac.kr
Document Type Article
Source ACS APPLIED MATERIALS & INTERFACES Volume:9 Issue:31 Pages:25941-25951 Published:2017
Times Cited 0
External Information http://dx.doi.org/10.1021/acsami.7b03325
Abstract Unlike for SnO2, few studies have reported on the use of SnC2O4 as an anode material for rechargeable lithium batteries. Here, we first introduce a SnC2O4-reduced graphene oxide composite produced via hydrothermal reactions followed by a layer-by-layer self-assembly process. The addition of rGO increased the electric conductivity up to similar to 10(-3) S cm(-1). As a result, the SnC2O4-reduced graphene oxide electrode exhibited a high charge (oxidation) capacity of similar to 1166 mAh g(-1) at a current of 100 mA g(-1) (0.1 C-rate) with a good retention delivering approximately 620 mAh g(-1) at the 200th cycle. Even at a rate of 10 C (10 A g(-1)), the composite electrode was able to obtain a charge capacity of 467 mAh g(-1). In contrast, the bare SnC2O4 had inferior electrochemical properties relative to those of the SnC2O4-reduced graphene oxide composite: similar to 643 mAh g(-1) at the first charge, retaining 192 mAh g(-1) at the 200th cycle and 289 mAh g(-1) at 10 C. This improvement in electrochemical properties is most likely due to the improvement in electric conductivity, which enables facile electron transfer via simultaneous conversion above 0.75 V and de/alloy reactions below 0.75 V: SnC2O4 + 2Li(+) + 2e(-) -
Web of Science Categories Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
Funding National Research Foundation of Korea (NRF); Ministry of Education, Science and Technology of Korea [NRF-2014R1A2A1A11051197]; National Research Foundation of Korea - Korean government (MEST) [NRF-2015M3D1A1069713]; KETEP [20164010201070]
Language English
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