High Efficiency Energy Storage Using Tailor-made Carbon Gels

碳凝胶是一种独特的多孔碳，具有很高的结构可控性。因此，它们可用于需要具有可控多孔结构的碳的各种应用。本项目首先建立一种精确控制碳凝胶结构的方法，然后将这种结构控制的碳凝胶实际应用于锂离子电池、电双层电容器、甲烷储存容器等储能应用，实现高存储效率。我们用非常简单的方法成功地独立控制了碳凝胶的纳、微、毫米级结构。因此，我们使用开发的结构控制方法，制备了结构调整以最大化其储能能力的碳。通过将获得的碳应用于各种储能系统，我们实现了极高的存储容量。例如，我们使用含有硅粉的碳凝胶，以细颗粒的形式合成，使锂离子电池的碳基阳极的存储容量增加了一倍。我们还通过使用以片剂形式合成的定制碳凝胶，将碳基双电层电容器的储能容量提高了一倍

Carbon gels are unique porous carbons, and are known to have a high structure controllability. Therefore they can be used for various applications which require carbons with controlled porous structures. This project was conducted first, to establish, a method for the precise controlling of the structure of carbon gels, and next, to actually apply such structure controlled carbon gels to energy storage applications, such as Li ion batteries, electric double layer capacitors and methane storage vessels and achieve high storage efficiencies.We succeeded in the independent controlling of the nano-, micro-and millimeter level structures of carbon gels by extremely simple methods. Therefore, we used the developed structure controlling methods, and prepared carbons with structures tuned to maximize their energy storage capabilities. We achieved extremely high storage capacities by applying the obtained carbons to various energy storage systems. For example, we doubled the storage capacity of carbon-based anodes for Li ion batteries by using carbon gels including Si powder, which were synthesized in the form of fine particles. We also doubled the energy storage capacities of carbon based electric double layer capacitors, by using tailor made carbon gels synthesized in the form of tablet