FeO0.7F1.3/C Nanocomposite as a High‐Capacity Cathode Material for Sodium‐Ion Batteries. (20th November 2014)

• Record Type: Journal Article
• Authors: Zhou, Yong‐Ning; Sina, Mahsa; Pereira, Nathalie; Yu, Xiqian; Amatucci, Glenn G.; Yang, Xiao‐Qing; Cosandey, Frederic; Nam, Kyung‐Wan
• Is Part Of: Advanced functional materials. Volume 25:Number 5(2015)
• Page Start: 696
• Page End: 703
• Publication Date: 2014-11-20
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201403241
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Searching high capacity cathode materials is one of the most important fields of the research and development of sodium‐ion batteries (SIBs). Here, we report a FeO_0.7F_1.3/C nanocomposite synthesized via a solution process as a new cathode material for SIBs. This material exhibits a high initial discharge capacity of 496 mAh g⁻¹ in a sodium cell at 50 °C. From the 3^rd to 50^th cycle, the capacity fading is only 0.14% per cycle (from 388 mAh g⁻¹ at 3^rd the cycle to 360 mAh g⁻¹ at the 50^th cycle), demonstrating superior cyclability. A high energy density of 650 Wh kg⁻¹ is obtained at the material level. The reaction mechanism studies of FeO_0.7F_1.3/C with sodium show a hybridized mechanism of both intercalation and conversion reaction.</p> </abstract>