材料科学
煅烧
纳米复合材料
阴极
碳纤维
电化学
化学工程
储能
燃烧
炭黑
复合数
电极
纳米技术
复合材料
化学
催化作用
生物化学
功率(物理)
物理
有机化学
物理化学
量子力学
工程类
天然橡胶
作者
Murugan Nanthagopal,Chang Won Ho,Nitheesha Shaji,Gyu Sang Sim,Murugesan Varun Karthik,Hong Ki Kim,Chang Woo Lee
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-03-16
卷期号:12 (6): 984-984
被引量:10
摘要
Sodium-ion batteries (SIBs) have emerged as an alternative candidate in the field of energy storage applications. To achieve the commercial success of SIBs, the designing of active materials is highly important. O3-type layered-NaFe0.5Mn0.5O2 (NFM) materials provide higher specific capacity along with Earth-abundance and low cost. Nevertheless, the material possesses some disadvantages, such as a low rate capability and severe capacity fading during cycling. To overcome such drawbacks, composite O3-type layered NFM with carbon has been prepared for the cathode electrode of SIBs through a facile solution combustion method followed by calcination process. The introduction of carbon sources into NFM material provides excellent electrochemical performances; moreover, the practical limitations of NFM material such as low electrical conductivity, structural degradation, and cycle life are effectively controlled by introducing carbon sources into the host material. The NFM/C-2 material delivers the specific charge capacities of 171, 178, and 166 mA h g−1; and specific discharge capacities of 188, 169, and 162 mA h g−1, in the first 3 cycles, respectively.
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