Electrochemical properties of graphite electrode in propylene carbonate-based electrolytes containing lithium and calcium ions
Electrochemical properties of graphite electrode in propylene carbonate-based electrolytes containing lithium and calcium ions
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DOI：
10.1016/j.electacta.2011.06.062
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发表时间：
2011-12
影响因子：
6.6
通讯作者：
S. Takeuchi;K. Miyazaki;Fumihiro Sagane;T. Fukutsuka;S. Jeong;T. Abe
中科院分区：
文献类型：
--
作者：
S. Takeuchi;K. Miyazaki;Fumihiro Sagane;T. Fukutsuka;S. Jeong;T. Abe
研究了石墨电极在同时含有LiN(SO2CF3)2和Ca(N(SO2CF3)2)2盐的碳酸丙烯酯(PC)电解液中的电化学性能，阐明了盐浓度对石墨电极嵌入/脱嵌性能的影响。在较高浓度的电解质中，石墨电极处发生可逆的锂离子嵌入/脱嵌。相反，在较低浓度的电解质中仅发生石墨的剥落。讨论了盐浓度对石墨电化学性能的影响。
Electrochemical properties of graphite electrode are studied in propylene carbonate (PC) electrolytes containing both LiN(SO2CF3)2and Ca(N(SO2CF3)2)2salts, and the influence of the salt concentrations on the intercalation/de-intercalation properties of graphite electrode is clarified. In the higher concentration electrolytes, reversible lithium-ion intercalation/de-intercalation at graphite electrode takes place. In contrast, only the exfoliation of graphite occurs in the lower concentration electrolytes. The effect of the salt concentrations on the electrochemical properties of graphite is discussed.