Organogel Electrolytes Based on a Low Molecular Weight Gelator: 2,3-Bis(n-decyloxy)anthracene
Organogel Electrolytes Based on a Low Molecular Weight Gelator: 2,3-Bis(n-decyloxy)anthracene
复制标题
基于低分子量胶凝剂的有机凝胶电解质：2,3-双（正癸氧基）蒽
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Lassègues
中科院分区：
文献类型：
--
作者：
F. Placin;J. Desvergne;J. Lassègues
由于2,3-双（n-癸氧基）蒽（DDOA）是包括碳酸丙烯酯（PC）在内的多种溶剂的良好胶凝剂，因此研究了基于DDOA的有机凝胶电解质的电化学性能。四烷基铵盐的存在使DDOA/PC凝胶保持了DDOA纤维的三维网状结构。此外，在给定温度下，凝胶中的电导率实际上与相应溶液中的电导率相同，无论是否含有DDOA。凝胶温度（Tgel）受盐的存在和性质的影响很小。因此，在1M盐浓度下，Et4NBF4使Tgel升高9°C， Bu4NBF4使Tgel降低7°C，这可能是由于Bu4N+阳离子的表面活性剂作用。液态电解质的电化学稳定窗口受限于DDOA的稳定性，表现出典型的蒽的氧化还原行为。然而，在凝胶状态下，DDOA在纤维内受到明显的保护，并且电化学稳定。
Since 2,3-bis(n-decyloxy)anthracene (DDOA) is a good gelling agent for a large number of solvents including propylene carbonate (PC), the electrochemical properties of organogel electrolytes based on DDOA have been investigated. The presence of tetraalkylammonium salts in DDOA/PC gels is shown to preserve the three-dimensional network of DDOA fibers. In addition, at a given temperature, the conductivity is practically the same in the gel as in the corresponding solution with or without DDOA. The gelation temperature, Tgel, is slightly affected by the presence and nature of the salt. Thus, at 1M salt concentration, Tgel is increased by 9 °C with Et4NBF4 and decreased by 7 °C with Bu4NBF4, presumably because of a surfactant effect of the Bu4N+ cation. The electrochemical stability window of the liquid electrolyte is limited by the stability of DDOA, which displays the typical redox behavior of anthracene. However, in the gel state, DDOA is apparently protected within the fibers and the electrochemical stabi...