Peng Huiling, Yu Qianchuan, Wang Shengping, Kim Jeonghun, Rowan Alan E, Nanjundan Ashok Kumar, Yamauchi Yusuke, Yu Jingxian
Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 China.
Key Laboratory of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China.
Adv Sci (Weinh). 2019 Jul 25;6(17):1900431. doi: 10.1002/advs.201900431. eCollection 2019 Sep 4.
To sustainably satisfy the growing demand for energy, organic carbonyl compounds (OCCs) are being widely studied as electrode active materials for batteries owing to their high capacity, flexible structure, low cost, environmental friendliness, renewability, and universal applicability. However, their high solubility in electrolytes, limited active sites, and low conductivity are obstacles in increasing their usage. Here, the nucleophilic addition reaction of aromatic carbonyl compounds (ACCs) is first used to explain the electrochemical behavior of carbonyl compounds during charge-discharge, and the relationship of the molecular structure and electrochemical properties of ACCs are discussed. Strategies for molecular structure modifications to improve the performance of ACCs, i.e., the capacity density, cycle life, rate performance, and voltage of the discharge platform, are also elaborated. ACCs, as electrode active materials in aqueous solutions, will become a future research hotspot. ACCs will inevitably become sustainable green materials for batteries with high capacity density and high power density.
为了可持续地满足不断增长的能源需求，有机羰基化合物（OCCs）因其高容量、结构灵活、成本低、环境友好、可再生和普遍适用性，作为电池的电极活性材料正受到广泛研究。然而，它们在电解质中的高溶解度、有限的活性位点和低导电性是增加其使用量的障碍。在此，首次利用芳香族羰基化合物（ACCs）的亲核加成反应来解释羰基化合物在充放电过程中的电化学行为，并讨论了ACCs的分子结构与电化学性能之间的关系。还阐述了通过分子结构修饰来提高ACCs性能的策略，即容量密度、循环寿命、倍率性能和放电平台电压。ACCs作为水溶液中的电极活性材料，将成为未来的研究热点。ACCs将不可避免地成为具有高容量密度和高功率密度的可持续绿色电池材料。
