▎ 摘　　要

High-performance transition metal carbonates are considered as promising electrode materials in lithium-ion batteries. However, the poor conductivity limits their further application. Herein, graphene modified CdCO3 cubic particles composite (CdCO3@rGO) are prepared using a facile hydrothermal method and their electrochemical performance are discussed. CdCO3@rGO can maintain a reversible capacity of 423.1 mAh g(-1) at 200 mA g(-1) after 100 cycles while CdCO3 only delivers a capacity of 142.0 mAh g(-1). The excellent cycling stability and rate capability of CdCO3@rGO can be attributed to graphene modification, which not only decreases the particle size with large surface area but also improves the electronic conductivity and effectively buffers volume changes during the lithium insertion/extraction process. (C) 2018 Elsevier B.V. All rights reserved.