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首页> 外文期刊>Polymers for advanced technologies >Functionalization of poly(4-chloromethylstyrene) with anthraquinone pendants for organic anode-active materials
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Functionalization of poly(4-chloromethylstyrene) with anthraquinone pendants for organic anode-active materials

机译：带有蒽醌侧基的聚（4-氯甲基苯乙烯）官能团用于有机阳极活性材料

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摘要

Condensation of anthraquinone-2-carboxylic acid with poly(4-chloromethylstyrene) afforded a high-density redox polymer containing the anthraquinone pendants with reversible charge storage capability at negative potentials near -1 V versus Ag/AgCl. Electrochemically reversible redox response of the polymer, which was ascribed to the reduction of the pendant group to the anion radical and the dianion, suggested that the polymer was sufficiently robust in these redox states for charge storage application. Immobilizing the anthraquinone groups on current collectors was accomplished by the use of the polymer which was swellable and yet insoluble in both aqueous and nonaqueous electrolyte solutions. Such properties allowed the accommodation of external cations from the electrolyte solution to permeate through the polymer layer for electroneutralization of the negative charge produced at the reduced state, which led to the repeatable charging and discharging cycles without degradation of the charge storage capacity. Exploration of the aqueous electrochemistry of anthraquinone, which had been inaccessible by the lack of the solubility of the conjugated and fused-ring molecule in H_2O, became feasible by virtue of the swelling property of the polymer layer in the aqueous electrolyte. While negative charge was relatively difficult to be stored with redox polymers compared to the positive charge due to the enhanced reactivity in their reduced states and small varieties of the appropriate redox sites, the present polymer was characterized as the excellent organic electrode-active materials that operated at sufficiently negative potentials which was essential for the fabrication of entirely organic batteries.
机译：蒽醌-2-羧酸与聚（4-氯甲基苯乙烯）的缩合反应得到了一种高密度氧化还原聚合物，该聚合物含有蒽醌侧基，在相对于Ag / AgCl的负电位接近-1 V时具有可逆的电荷存储能力。聚合物的电化学可逆氧化还原反应归因于侧基还原为阴离子自由基和二价阴离子，表明该聚合物在这些氧化还原状态下具有足够的鲁棒性，可用于电荷存储。通过使用可溶胀而又不溶于水和非水电解质溶液的聚合物，将蒽醌基团固定在集电器上。这样的性质允许容纳来自电解质溶液的外部阳离子渗透穿过聚合物层，以使在还原状态下产生的负电荷电子中和，这导致可重复的充电和放电循环而不降低电荷存储容量。由于在电解质中的聚合物层的溶胀性，由于缺乏共轭和稠环分子在H_2O中的溶解度而无法接近的蒽醌的水电化学研究变得可行。尽管与正电荷相比，由于其还原态的反应性增强和适当氧化还原位点的种类少，与正电荷相比，负电荷相对较难存储，但本聚合物的特点是具有出色的有机电极活性材料具有足够的负电势，这对于制造完全有机的电池至关重要。

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