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Improved Reversibility of Fe 3+ /Fe 4+ Redox Couple in Sodium Super Ion Conductor Type Na 3 Fe 2 (PO 4 ) 3 for Sodium‐Ion Batteries
Author(s) -
Rajagopalan Ranjusha,
Chen Bo,
Zhang Zhicheng,
Wu XingLong,
Du Yonghua,
Huang Ying,
Li Bing,
Zong Yun,
Wang Jie,
Nam GwangHyeon,
Sindoro Melinda,
Dou Shi Xue,
Liu Hua Kun,
Zhang Hua
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201605694
Subject(s) - sodium , redox , ion , materials science , carbon fibers , nanotechnology , chemical engineering , inorganic chemistry , chemistry , composite number , metallurgy , engineering , organic chemistry , composite material
The methodology employed here utilizes the sodium super ion conductor type sodium iron phosphate wrapped with conducting carbon network to generate a stable Fe 3+ /Fe 4+ 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.