Enhanced electrochemical performance of Li1.2Ni0.13Co0.13Mn0.54O2 composited with Ti3C2Tx MXene nanosheets

• DOI: 10.1007/s10008-019-04232-6
• Publication Date: 2019-03-16T07:02:44Z
• Authors: Zhitang Fang; Bangchuan Zhao; Jiafeng Zhou; Jin Bai; Kunzhen Li; Hongyang Ma; Shuai Lin; Xuebin Zhu; Yuping Sun
• Keywords: 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Li1.2Ni0.13Co0.13Mn0.54O2/Ti3C2Tx (LMR/TC) composite materials have been synthesized through mixing LMR particles with TC nanosheets. SEM result shows that most LMR particles are anchored on the surface of the Ti3C2Tx nanosheets. Such a structure can short the diffusion pathway for both the electron and lithium ions, enhancing electronic and ionic conductivities. Meanwhile, the composite structure keeps much stable during charge/discharge processes, leading to an enhanced cycling performance of the cathode. The LMR/TC (5 wt% Ti3C2Tx) composite electrode delivers an initial discharge capacity of 279.9 mA h g−1 at 0.1 C with coulombic efficiency of 81.8% and the capacity can maintain 248 mA h g−1 after 100 cycles with capacity retention of 85.7%. In contrast, the initial coulombic efficiency and the capacity retention after 100 cycles at same conditions of the pristine LMR electrode are only 67.1% and 67.6%, respectively. The composited cathode also shows an enhanced rate capacity compared to the pristine LMR.