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Batteries: Na 4‐α M 2+α/2 (P 2 O 7 ) 2 (2/3 ≤ α ≤ 7/8, M = Fe, Fe 0.5 Mn 0.5 , Mn): A Promising Sodium Ion Cathode for Na‐ion Batteries (Adv. Energy Mater. 6/2013)
Author(s) -
Ha KwangHo,
Woo Seung Hee,
Mok Duckgyun,
Choi NamSoon,
Park Yuwon,
Oh Seung M.,
Kim Youngshol,
Kim Jeongsoo,
Lee Junesoo,
Nazar Linda F.,
Lee Kyu Tae
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201370023
Subject(s) - materials science , electrochemistry , hydride , cathode , stoichiometry , lithium (medication) , ion , phase (matter) , metal , sodium , nanotechnology , electrode , chemistry , metallurgy , endocrinology , medicine , organic chemistry
Sodium‐ion batteries are an attractive alternative to replace Lithium‐ion batteries and Ni–metal hydride batteries for electric vehicle and smart grid applications. Kyu Tae Lee, Linda F. Nazar, and co‐workers demonstrate on page 770 , for the first time, the synthesis of new polyanion‐based compounds, Na 3.12 M 2.44 (P 2 O 7 ) 2 (M=Fe, Fe 0.5 Mn 0.5 , Mn), and their electrochemical performance as a cathode material for Na ion batteries. The deliberate synthesis of the off‐stoichiometric phase, Na 3.42 Fe 2.44 (P 2 O 7 ) 2.05 shows excellent cycle and rate performance, and this is attributed to the spacious channel size along the a ‐axis, along with a single phase transformation upon de/sodiation.