Operando analysis of graphite intercalation compounds with fluoride-containing polyatomic anions in aqueous solutions
Operando analysis of graphite intercalation compounds with fluoride-containing polyatomic anions in aqueous solutions
复制标题
水溶液中含氟多原子阴离子石墨插层化合物的操作分析
DOI：
10.1039/d1ma00010a
复制
发表时间：
2021
影响因子：
5
通讯作者：
Miyazaki Kohei
中科院分区：
文献类型：
--
作者：
Ito Yuta;Miyahara Yuto;Yokoyama Yuko;Kondo Yasuyuki;Abe Takeshi;Miyazaki Kohei
水溶液中石墨层间化合物(GICs)的形成引起了人们的广泛关注，但GICs形成/变形的可逆性是构建高度安全的二次电池的一个具有挑战性的问题。在这项研究中，我们使用了一种操作数分析(X射线衍射和拉曼光谱)来讨论在高浓度水溶液中使用含氟多原子阴离子形成GICs的可行性。结果表明，含C2F5基团的阴离子(如[N(SO2CF3)(SO2CF3)]−或[N(SO2CF2CF3)2]−)在石墨体中不发生插层反应，而只发生在石墨的表面区。此外，含有CF3部分的阴离子表现出不同的行为：SO3CF3−比N(SO2CF3)2−具有更大的可逆性和更大的级数。这些结果为负离子的可逆插层和脱层及其作为正极材料在水基充电电池中的应用提供了设计指南。
The formation of graphite intercalation compounds (GICs) in aqueous solutions has attracted much attention, but reversibility in the formation/deformation of GICs is a challenging issue to construct highly safe rechargeable batteries. In this study, we used an operando analysis (X-ray diffraction and Raman spectroscopy) to discuss the feasibility of using fluoride-containing polyatomic anions in the formation of GICs in aqueous highly concentrated solutions. We found that the intercalation of anions containing a C2F5 moiety (such as [N(SO2CF3)(SO2CF2CF3)]− or [N(SO2CF2CF3)2]−) does not occur in the bulk of graphite, but only in the surface region. In addition, anions containing a CF3 moiety show different behaviors: SO3CF3− shows greater reversibility and larger stage-number than N(SO2CF3)2− in the formation of GICs. These results provide design guidelines for the reversible intercalation and de-intercalation of anions and their application as a cathode material in aqueous rechargeable batteries.
使用从头计算和离子淌度质谱法分析糖肽离子的分子结构
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
中村賀美;竹内孝江
通讯作者：
竹内孝江
影响因子：
4.9
作者：
Becker, Maximilian;Kuehnel, Ruben-Simon;Battaglia, Corsin
通讯作者：
Battaglia, Corsin