Improved Reversibility of Fe³⁺/Fe⁴⁺ Redox Couple in Sodium Super Ion Conductor Type Na3Fe2(PO4)3 for Sodium-Ion Batteries

Authors

Ranjusha Rajagopalan, University of WollongongFollow
Bo Chen, Nanyang Technological University
Zhicheng Zhang, Nanyang Technological University
Xing Long Wu, Nanyang Technological University
Yonghua Du, Institute of Chemical and Engineering Sciences, Singapor
Ying Huang, Nanyang Technological University
Bing Li, Institute of Chemical and Engineering Sciences, Singapor
Yun Zong, Institute of Materials Research and Engineering, Singapor
Jie Wang, Nanyang Technological University
Gwang-Hyeon Nam, Nanyang Technological University
Melinda Sindoro, Nanyang Technological University
Shi Xue Dou, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow
Hua Zhang, Nanyang Technological UniversityFollow

RIS ID

112056

Publication Details

Rajagopalan, R., Chen, B., Zhang, Z., Wu, X., Du, Y., Huang, Y., Li, B., Zong, Y., Wang, J., Nam, G., Sindoro, M., Dou, S. Xue., Liu, H. Kun. & Zhang, H. (2017). Improved Reversibility of Fe³⁺/Fe⁴⁺ Redox Couple in Sodium Super Ion Conductor Type Na3Fe2(PO4)3 for Sodium-Ion Batteries. Advanced Materials, 29 (12), 1605694-1.

Abstract

The methodology employed here utilizes the sodium super ion conductor type sodium iron phosphate wrapped with conducting carbon network to generate a stable Fe3+/Fe4+ redox   couple, thereby exhibiting higher operating voltage and energy density of sodium-ion batteries. This new class of sodium iron phosphate wrapped by carbon also displays a cycling stability with >96% capacity retention after 200 cycles.