Multi-electron reactions and chain conversion of amorphous cathodes to improve the specific capacity of rechargeable lithium batteries
Source abstract
Abstract
This study explores the impact of the oxidation-reduction reaction process and Mo-V diatomic coupling on lithiation by introducing Mo 2B as a reducing agent into the structure of V 2O 5-Li 3PO 4 glass. The results show that the mixed system simultaneously generated B 2O 3, MoO 3 and VO 2. With the increase of B 2O 3, the [BO 3] triangle transformed into the [BO 4] tetrahedron, accompanied by the boron anomaly effect, and V 5+ transformed into V 4+. 65V 2O 5-30Li 3PO 4-5BMo 2 (VPBMo2) showed chain conversion with an excellent specific capacity (the first discharge specific capacity was 289.9 mAh g −1), rate performance, structural stability and had the highest electronic conductivity. The lithiation mechanism of the V-Mo coupling multi-electron reaction was found to increase the specific capacity of the lithium ion battery. According to DFT calculations, the VPBMo2 showed magnetism and became metallic. After Li adsorption, the peak density of states at the Fermi level to the guide band, indicating improved conductivity of the VPBMo2.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (61)
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