Toward Na-ion Batteries—Synthesis and Characterization of a Novel High Capacity Na Ion Intercalation Material
Toward Na-ion Batteries—Synthesis and Characterization of a Novel High Capacity Na Ion Intercalation Material
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DOI：
10.1021/cm3029615
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发表时间：
2013-01
影响因子：
8.6
通讯作者：
D. Buchholz;A. Moretti;Richard Kloepsch;S. Nowak;V. Siozios;M. Winter;S. Passerini
中科院分区：
文献类型：
--
作者：
D. Buchholz;A. Moretti;Richard Kloepsch;S. Nowak;V. Siozios;M. Winter;S. Passerini
The rapid growth of the worldwide demand of lithium for batteries (LIBs) can possibly lead to a shortage of its reserves. Sodium batteries represent a promising alternative because they enable much higher energy densities than other battery systems, with the exception of LIBs, and are not limited by sodium availability. Herein, we present a novel, Na+ ion intercalation material, Na0.45Ni0.22Co0.11Mn0.66O2 (space group P63/mmc) synthesized in air by a coprecipitation method followed by a thermal treatment and a water-rinsing step. This material performs a specific capacity of 135 mA h g–1 with a Coulombic efficiency exceeding 99.7%. Upon long-term cycling tests the material shows excellent capacity retention after more than 250 cycles. Such an overall performance, superior to that of presently known sodium-ion cathodes, represents a step further toward the realization of sustainable batteries for efficient stationary energy storage.
