Towards organic energy storage: characterization of 2,5-bis(methylthio) thieno[3,2-b]thiophene
Towards organic energy storage: characterization of 2,5-bis(methylthio) thieno[3,2-b]thiophene
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DOI：
10.1039/c1jm10664c
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Abruna, Hector D.
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文献类型：
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作者：
Burkhardt, Stephen E.;Conte, Sean;Abruna, Hector D.
电能存储设备将在可持续能源生产和使用的发展中发挥关键作用，并将间歇性和可再生能源整合到能源领域。用于开发改进的能量存储材料和装置的一种策略是利用电容和赝电容电极，例如活性炭或导电聚合物。然而，这些材料通常具有低能量密度的缺点。这些材料的功能与悬垂氧化还原单元已被提出作为一种方法，以提高能量密度，同时保持高倍率性能。在这份报告中，我们提出了一个这样的候选侧分子，2，5-双（甲硫基）噻吩并[3，2-B]噻吩的合成和彻底的表征，并评估其作为阴极材料的潜在用途。电化学、光谱电化学和计算数据表明，双（甲硫基）噻吩并[3，2-B]噻吩是轻质分子，能够经历多个可逆氧化还原过程，并且是用于改善阴极材料的能量密度同时仍提供高倍率（功率）能力的良好候选者。
Electrical energy storage devices will play a key role in the development of sustainable energy production and usage, and for integrating intermittent and renewable sources into the energy landscape. One strategy for developing improved energy storage materials and devices is to take advantage of capacitive and pseudocapacitive electrodes such as activated carbons or conducting polymers. However, these materials generally suffer from low energy densities. Functionalization of these materials with pendant redox units has been proposed as a method to improve the energy densities while maintaining the high rate capability. In this report, we present the synthesis and thorough characterization of one such candidate pendant molecule, 2,5-bis(methylthio) thieno[3,2-b]thiophene, and assess its potential use as a cathode material. Electrochemical, spectroelectrochemical and computational data suggest that bis(methylthio) thieno[3,2-b]thiophene is a lightweight molecule, capable of undergoing multiple reversible redox processes, and a good candidate for improving the energy density of cathode materials while still offering high rate (power) capability.