Synergetic impact of high-entropy microdoping modification in NaV(PO)

High entropy polyanionic Na 3 V 1.9 (Ca,Mg,Cr,Ti,Mn) 0.1 (PO 4 ) 3 was synthesized, which activated a reversible redox reaction of V 4+ /V 5+ and reached a remarkable capacity of 116 mA h g −1 at 1C and maintained 90% capacity retention after 1000 cycles at 10C. Structure evolution and sodium storag...

Full description

Saved in:
Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 6; no. 18; pp. 2512 - 2515
Main Authors Kang, Yahao, Lin, Xitao, Tong, Shuai, Zhu, Wenlong, Wang, Yang, Jia, Min, Zhang, Xiaoyu
Format Journal Article
Published 27.02.2024
Online AccessGet full text

Cover

More Information
Summary:High entropy polyanionic Na 3 V 1.9 (Ca,Mg,Cr,Ti,Mn) 0.1 (PO 4 ) 3 was synthesized, which activated a reversible redox reaction of V 4+ /V 5+ and reached a remarkable capacity of 116 mA h g −1 at 1C and maintained 90% capacity retention after 1000 cycles at 10C. Structure evolution and sodium storage mechanisms were revealed by an in situ XRD method, which disclosed the high-entropy effect of material design. Together with the full battery tests, these findings promote the wide applications of high-entropy polyanionic cathodes in SIBs. High entropy Na 3 V 1.9 (Ca,Mg,Cr,Ti,Mn) 0.1 (PO 4 ) 3 doped with a trace amount of polyanions was successfully synthesized, which exhibited excellent electrochemical performance even at a 10C rate. A V 4+ /V 5+ redox reaction was also achieved, which promoted the commercial application.
Bibliography:Electronic supplementary information (ESI) available. See DOI
https://doi.org/10.1039/d4cc00033a
ISSN:1359-7345
1364-548X
DOI:10.1039/d4cc00033a