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Toward an Ideal Polymer Binder Design for High-Capacity Battery Anodes
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2013-07-31 , DOI: 10.1021/ja4054465 Mingyan Wu , Xingcheng Xiao 1 , Nenad Vukmirovic 2 , Shidi Xun , Prodip K. Das , Xiangyun Song , Paul Olalde-Velasco , Dongdong Wang , Adam Z. Weber , Lin-Wang Wang , Vincent S. Battaglia , Wanli Yang , Gao Liu
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2013-07-31 , DOI: 10.1021/ja4054465 Mingyan Wu , Xingcheng Xiao 1 , Nenad Vukmirovic 2 , Shidi Xun , Prodip K. Das , Xiangyun Song , Paul Olalde-Velasco , Dongdong Wang , Adam Z. Weber , Lin-Wang Wang , Vincent S. Battaglia , Wanli Yang , Gao Liu
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The dilemma of employing high-capacity battery materials and maintaining the electronic and mechanical integrity of electrodes demands novel designs of binder systems. Here, we developed a binder polymer with multifunctionality to maintain high electronic conductivity, mechanical adhesion, ductility, and electrolyte uptake. These critical properties are achieved by designing polymers with proper functional groups. Through synthesis, spectroscopy, and simulation, electronic conductivity is optimized by tailoring the key electronic state, which is not disturbed by further modifications of side chains. This fundamental allows separated optimization of the mechanical and swelling properties without detrimental effect on electronic property. Remaining electronically conductive, the enhanced polarity of the polymer greatly improves the adhesion, ductility, and more importantly, the electrolyte uptake to the levels of those available only in nonconductive binders before. We also demonstrate directly the performance of the developed conductive binder by achieving full-capacity cycling of silicon particles without using any conductive additive.
中文翻译：
迈向高容量电池阳极的理想聚合物粘合剂设计
采用高容量电池材料并保持电极的电子和机械完整性的困境需要粘合剂系统的新颖设计。在这里，我们开发了一种多功能粘合剂聚合物，以保持高电子导电性、机械粘附性、延展性和电解质吸收。这些关键特性是通过设计具有适当官能团的聚合物来实现的。通过合成、光谱和模拟，通过定制关键电子状态来优化电子电导率，而不会受到侧链进一步修改的干扰。这一基本原理允许单独优化机械和溶胀性能，而不会对电子性能产生不利影响。保持电子导电性，聚合物增强的极性大大提高了附着力，延展性，更重要的是，电解质的吸收达到以前只有在非导电粘合剂中才有的水平。我们还通过在不使用任何导电添加剂的情况下实现硅颗粒的全容量循环，直接证明了所开发的导电粘合剂的性能。
更新日期：2013-07-31
中文翻译：
迈向高容量电池阳极的理想聚合物粘合剂设计
采用高容量电池材料并保持电极的电子和机械完整性的困境需要粘合剂系统的新颖设计。在这里，我们开发了一种多功能粘合剂聚合物，以保持高电子导电性、机械粘附性、延展性和电解质吸收。这些关键特性是通过设计具有适当官能团的聚合物来实现的。通过合成、光谱和模拟，通过定制关键电子状态来优化电子电导率，而不会受到侧链进一步修改的干扰。这一基本原理允许单独优化机械和溶胀性能，而不会对电子性能产生不利影响。保持电子导电性，聚合物增强的极性大大提高了附着力，延展性，更重要的是，电解质的吸收达到以前只有在非导电粘合剂中才有的水平。我们还通过在不使用任何导电添加剂的情况下实现硅颗粒的全容量循环，直接证明了所开发的导电粘合剂的性能。
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