Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/23356
Title: 
Other Titles: 
An advanced cathode composite for co-utilization of cations and anions in lithium batteries [Published title]
Authors: 
Subjects: 
Lithium Batteries
Cathode
Anion de-/intercalation
Graphite
LiMn0.7Fe0.3PO4
Issue Date: 
2021
Citation: 
Wang, X.-T., Yang, Y., Guo, J.-Z., Gu, Z.-Y., Ang, E. H., Sun, Z.-H., Li, W.-H., Liang, H.-J., & Wu, X.-L. (2021). An advanced cathode composite for co-utilization of cations and anions in lithium batteries. Journal of Materials Science & Technology, 102, 72-79. https://doi.org/10.1016/j.jmst.2021.05.074
Journal: 
Journal of Materials Science and Technology
Abstract: 
Anions in the electrolyte are usually ignored in conventional "rocking-chair" batteries because only cationic de-/intercalation is considered. An ingenious scheme combining LiMn0.7Fe0.3PO4 (LMFP@C) and graphite as a hybrid cathode for lithium-ion batteries (LIBs) is elaborately designed in order to exploit the potential value of anions for battery performance. The hybrid cathode has a higher conductivity and energy density than any of the individual components, allowing for the co-utilization of cations and anions through the de-/intercalation of Li+ and PF6− over a wide voltage range. The optimal compound with a weight mix ratio of LMFP@C: graphite= 5: 1 can deliver the highest specific capacity of nearly 140 mA h/g at 0.1 C and the highest voltage plateau of around 4.95 V by adjusting the appropriate mixing ratio. In addition, cyclic voltammetry was used to investigate the electrode kinetics of Li+ and PF6- diffusion in the hybrid compound at various scan rates. In situ X-ray diffraction is also performed to further demonstrate the structural evolution of the hybrid cathode during the charge/discharge process.
URI: 
ISSN: 
1005-0302
DOI: 
Grant ID: 
91963118
20200201066JC
B13013
Funding Agency: 
National Natural Science Foundation of China
Science Technology Program of Jilin Province
111 Project China
File Permission: 
Embargo_20230901
File Availability: 
With file
Appears in Collections:Journal Articles

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