A free-standing Li1.2Mn0.54Ni0.13Co0.13O2/MWCNT framework for high-energy lithium-ion batteries. Issue 12 (22nd October 2018)

• Record Type: Journal Article
• Authors: Lv, Congjie; Peng, Yi; Yang, Jing; Liu, Chen; Duan, Xiaochuan; Ma, Jianmin; Wang, Taihong
• Is Part Of: Inorganic chemistry frontiers. Volume 5:Issue 12(2018)
• Page Start: 3053
• Page End: 3060
• Publication Date: 2018-10-22
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8qi00926k
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : Free-standing Li1.2 Mn0.54 Ni0.13 Co0.13 O2 /MWCNT (LLO/MWCNT) framework electrodes have been successfully fabricated for high energy density lithium-ion batteries. By constructing a 3D conductive network, the LLO/MWCNT cells exhibit superior electrochemical performances. Abstract : Free-standing Li1.2 Mn0.54 Ni0.13 Co0.13 O2 /MWCNT (LLO/MWCNT) framework electrodes have been successfully fabricated for high energy density lithium-ion batteries. By constructing a 3D conductive network, the LLO/MWCNT cells exhibit superior electrochemical performances. Specifically, LLO/MWCNT cells achieve a high initial discharge capacity of 318.2 mA h g −1 at 0.1 C (1 C = 250 mA g −1 ) with a coulombic efficiency of 91.1%. After 200 cycles at 1 C, LLO/MWCNT cells can still deliver 209.2 mA h g −1, corresponding to a capacity retention of 95.9%. Furthermore, LLO/MWCNT electrodes can still deliver a high discharge capacity of 121.6 mA h g −1 after 500 cycles at 10 C. Compared with conventional electrodes, the free-standing LLO/MWCNT electrodes can yield up to 47% reduction in the total weight and the active materials of LLO/MWCNT electrodes have been raised 2 times. By combining the high capacity Li1.2 Mn0.54 Ni0.13 Co0.13 O2 cathodes and the superiority of the free-standing structure, the energy density of lithium-ion batteries can be highly enhanced and this design holds great potential to be used with future electronic devices.