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Zero-Strain Na2FeSiO4 as Novel Cathode Material for Sodium-Ion Batteries

TitleZero-Strain Na2FeSiO4 as Novel Cathode Material for Sodium-Ion Batteries
Publication TypeJournal Article
Year of Publication2016
AuthorsLi, SD, Guo, JH, Ye, Z, Zhao, X, Wu, SQ, Mi, JX, Wang, CZ, Gong, ZL, McDonald, MJ, Zhu, ZZ, Ho, KM, Yang, Y
Journal Interfaces
Date Published07
Type of ArticleArticle
ISBN Number1944-8244
Accession NumberWOS:000379794100026
Keywordscathode, electrodes, energy-storage, high-capacity, lithium, Materials Science, Na2FeSiO4, nanocrystallites, performance, sodium ion batteries, Technology - Other Topics, zero-strain

A new cubic polymorph of sodium iron silicate, Na2FeSiO4, is reported for the first time as a cathode material for Na-ion batteries. It adopts an unprecedented cubic rigid tetrahedral open framework structure, i.e., F (4) over bar 3m, leading to a polyanion cathode material without apparent cell volume change during the charge/discharge processes. This cathode shows a reversible capacity of 106 mAh g(-1) and a capacity retention of 96% at 5 mA g(-1) after 20 cycles.

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Exploratory Theory

Alternate JournalACS Appl. Mater. Interfaces