Synthesis and Electrochemical Properties of BiMoO/Carbon Anode for Lithium-Ion Battery Application.

High capacity electrode materials are the key for high energy density Li-ion batteries (LIB) to meet the requirement of the increased driving range of electric vehicles. Here we report the synthesis of a novel anode material, BiMoO/palm-carbon composite, via a simple hydrothermal method. The composite shows higher reversible capacity and better cycling performance, compared to pure BiMoO. In 0-3 V, a potential window of 100 mA/g current density, the LIB cells based on BiMoO/palm-carbon composite show retention reversible capacity of 664 mAh·g after 200 cycles. Electrochemical testing and density functional theory calculations are used to study the fundamental mechanism of Li ion incorporation into the materials. These studies confirm that Li ions incorporate into BiMoO via insertion to the interstitial sites in the MoO-layer, and the presence of palm-carbon improves the electronic conductivity, and thus enhanced the performance of the composite materials.