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Nano-sized lithium manganese oxide dispersed on carbon nanotubes for energy storage applications |
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| Authors: | Sang-Bok Ma Kyung-Wan Nam Won-Sub Yoon Seong-Min Bak Xiao-Qing Yang Byung-Won Cho Kwang-Bum Kim |
| Affiliation: | aDepartment of Material Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-gu, Seoul 120-749, Republic of Korea;bChemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA;cSchool of Advanced Materials Engineering, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Republic of Korea;dBattery Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea |
| Abstract: | Nano-sized lithium manganese oxide (LMO) dispersed on carbon nanotubes (CNT) has been synthesized successfully via a microwave-assisted hydrothermal reaction at 200 °C for 30 min using MnO2-coated CNT and an aqueous LiOH solution. The initial specific capacity is 99.4 mAh/g at a 1.6 C-rate, and is maintained at 99.1 mAh/g even at a 16 C-rate. The initial specific capacity is also maintained up to the 50th cycle to give 97% capacity retention. The LMO/CNT nanocomposite shows excellent power performance and good structural reversibility as an electrode material in energy storage systems, such as lithium-ion batteries and electrochemical capacitors. This synthetic strategy opens a new avenue for the effective and facile synthesis of lithium transition metal oxide/CNT nanocomposite. |
| Keywords: | Batteries Carbon nanotube Lithium manganese oxide Nanocomposite Nanoparticle |
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