Electrochemical properties of LiMnBO₃ as a potential cathode material for lith-ium batteries

Pristine LiMnBO₃ and carbon incorporated LiMnBO₃ are synthesized by a simple solid state reaction at 500 or 800°C. For carbon incorporation, ketchen black or sucrose are added in the starting powder as a carbon source. While the pristine LiMnBO₃ shows very small specific capacities at both temperatures, the added carbon into LiMnBO₃ substantially increases the capacity up to 76 mAh/g at the 30th cycle. Firing at 500 and 800°C results in monoclinic and hexagonal phases, respectively, and the monoclinic LiMnBO₃ addresses better electrochemical properties in terms of the specific capacity and cycling performance.