Synthesis and Electrochemical Properties of Bi2MoO6/Carbon Anode for Lithium-Ion Battery Application

Tingting Zhang; Emilia Olsson; Mohammadmehdi Choolaei; Vlad Stolojan; Chuanqi Feng; Huimin Wu; Shiquan Wang; Qiong Cai

doi:10.3390/ma13051132

Synthesis and Electrochemical Properties of Bi₂MoO₆/Carbon Anode for Lithium-Ion Battery Application

Materials (Basel). 2020 Mar 4;13(5):1132. doi: 10.3390/ma13051132.

Authors

Tingting Zhang¹, Emilia Olsson², Mohammadmehdi Choolaei², Vlad Stolojan³, Chuanqi Feng^{1

2}, Huimin Wu¹, Shiquan Wang¹, Qiong Cai²

Affiliations

¹ Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, China.
² Depatment of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK.
³ Advanced Technology Institute, Department of Electrical and Electronic Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK.

Abstract

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, Bi₂MoO₆/palm-carbon composite, via a simple hydrothermal method. The composite shows higher reversible capacity and better cycling performance, compared to pure Bi₂MoO₆. In 0-3 V, a potential window of 100 mA/g current density, the LIB cells based on Bi₂MoO₆/palm-carbon composite show retention reversible capacity of 664 mAh·g^-1 after 200 cycles. Electrochemical testing and ab initio 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 Bi₂MoO₆ via insertion to the interstitial sites in the MoO₆-layer, and the presence of palm-carbon improves the electronic conductivity, and thus enhanced the performance of the composite materials.

Keywords: Li ion batteries; ab initio calculations; composite; electrochemical performance; electrode materials; hydrothermal synthesis.

Abstract

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