Electrochemical Performance of LiMnBO3/C Composite Synthesized by Wet Impregnating Method

• Published in: Rare metal materials and engineering Vol. 46; no. 1; pp. 78 - 82
• Main Authors: Anping, Tang, Zeqiang, He, Guorong, Xu, Ronghua, Peng, Haishen, Song
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2017
• Subjects: cathode; LiMnBO3; lithium ion batteries; cathode; lithium ion batteries; LiMnBO3
• ISSN: 1875-5372; 1875-5372
• DOI: 10.1016/S1875-5372(17)30081-4

Hexagonal-LiMnBO3/C composite was prepared by a wet impregnating method using the 3D-network ketchen black (KB) as both a temple and a conductive framework. The crystal structure, morphology and specific surface area were characterized by X-ray diffraction, scanning electron microscopy and nitrogen sorption measurements, respectively. The electrochemical properties of the composite were studied by galvanostatic charge/discharge and cyclic voltammetry measurements. Results show that when tested at C/20 rate for Li ion insertion/extraction properties, LiMnBO3/C composite exhibits good cycle capability with discharge capacity retention of 87.4% at the 30th cycle. As the current rate increases from C/20, C/10 to C/5, good rate capability is obtained for all rates with initial discharge specific capacities of 138.8, 124.5 and 100.5 mAh·g−1, respectively.