High capacity MoO2-based anode enabled by 3D carbon in-situ embedment through a green template strategy

MoO2 material has attracted extensive attention as a competitive candidate because of high theoretical capacity and low cost. However, the large volume change and low conductivity and ion diffusivity of the MoO2 during lithium storage process bring about fast capacity decay and sluggish reaction kin...

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Bibliographic Details
Published in:Synthetic metals 2021-10, Vol.280, p.116893, Article 116893
Main Authors: Dai, Zhifeng, Ji, Yelin, Tian, Qinghua, Sui, Zhuyin
Format: Article
Language:English
Subjects:
Anodes
Business competition
Carbon
Decay rate
Embedment
Green preparation
High capacity
Improved electrochemical kinetics
Lithium
Lithium-ion batteries
Low conductivity
Molybdenum oxides
MoO2 anode
Nanoparticles
Reaction kinetics
Rechargeable batteries
Strategy
Structural stability
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Summary:MoO2 material has attracted extensive attention as a competitive candidate because of high theoretical capacity and low cost. However, the large volume change and low conductivity and ion diffusivity of the MoO2 during lithium storage process bring about fast capacity decay and sluggish reaction kinetics, seriously impeding the practical application of MoO2 in lithium-ion batteries. Herein, we demonstrate a relatively green and facile strategy to prepare MoO2/C composite to mitigate above issues. Combined multiple characterization results support that this composite is made up of MoO2 nanoparticles with a 3D porous carbon embedment and hence exhibits upgraded structure stability and enhanced reaction kinetics as a lithium-ion battery anode. Consequently, thus MoO2/C composite shows superior performance, revealing 1050 and 707 mAh g−1 after 110 and 100 cycles at 200 and 1000 mA g−1, respectively. Moreover, this work could offer a new insight into aiming of green preparation of advanced MoO2/C-based anodes for lithium-ion batteries. This work demonstrates a facile and relatively green strategy to prepare high capacity MoO2/C composite anodes for lithium-ion batteries. [Display omitted] •3D MoO2/C composite was fabricated via a green and facile NaCl template strategy.•Electrochemical performance of 3D MoO2/C composite was systematically studied.•This well-designed structure promoted the electrochemical properties of MoO2/C composite.•High capacity and good rate capability were demonstrated.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2021.116893