Electrosprayed hierarchical mesoporous Mn 0.5 Ti 2 (PO 4 ) 3 @C microspheres as promising High-Performance anode for Potassium-Ion batteries

NASICON-structured Ti-based polyanion compounds benefit from a stable structural framework, large ion channels, and fast ion mobility. However, the large radius of potassium and its poor electronic conductivity restrict its use in potassium-ion batteries. Herein, hierarchical mesoporous Mn Ti (PO )...

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Bibliographic Details
Published in:Journal of colloid and interface science 2023-12, Vol.658, p.923
Main Authors: Liu, Shaoxiong, Li, Xiao, Zhong, Siwei, Jiang, Wenjia, Liu, Ye, Ding, Wenchong, Hu, Hai, Huang, Zhifeng, Liu, Li
Format: Article
Language:English
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Summary:NASICON-structured Ti-based polyanion compounds benefit from a stable structural framework, large ion channels, and fast ion mobility. However, the large radius of potassium and its poor electronic conductivity restrict its use in potassium-ion batteries. Herein, hierarchical mesoporous Mn Ti (PO ) @C microspheres have been successfully synthesized using a simple electrospraying method. These microspheres consist of Mn Ti (PO ) nanoparticles evenly embedded in three-dimensional mesoporous carbon microspheres. The hierarchical mesoporous micro/nanostructure facilitates the rapid insertion and extraction of K , while the three-dimensional carbon microspheres matrix enhances electrical conductivity and prevents active materials from collapsing during cycling. So the hierarchical mesoporous Mn Ti (PO ) @C microspheres exhibit a high reversible discharge specific capacity (306 mA h g at 20 mA g ), a notable rate capability (123 mA h g at 5000 mA g ), and exceptional cycle performance (148 mA h g at 500 mA g after 1000 cycles). The results show that electrosprayed Mn Ti (PO ) @C microspheres are a promising anode for PIBs.
ISSN:1095-7103