To improve the lithium storage properties of anode in lithium ion capacitors (LICs), reduced graphene oxide (rGO) decorated with crystallized cobalt borate nanoparticles (Co-B/rGO) was prepared by an in-situ grow method. Microstructural characterizations demonstrate that crystallized Co-B nanoparticles not only act as an effective electron transfer bridge between rGO nanosheets but also provide more active sites for lithium storage. As a result, LIC based on Co-B/rGO anode exhibited stable cycling performance with a capacitance retention of 75% after 2000 cycles at 2000 mA g^-1, and high energy and power density. Thus, Co-B/rGO can be a promising anode material for LICs.

为了提高锂离子电容器（LICs）中阳极的锂存储性能，通过原位生长方法制备了用结晶的硼酸钴纳米颗粒（Co-B / rGO）装饰的还原氧化石墨烯（rGO）。微观结构表征表明，结晶的Co-B纳米粒子不仅充当rGO纳米片之间的有效电子转移桥，而且还提供了更多的锂存储活性位。结果，基于Co-B / rGO阳极的LIC表现出稳定的循环性能，在2000 mA g ^-1的2000次循环后，电容保持率为75％，并且具有高能量和功率密度。因此，Co-B / rGO可以成为LIC的有希望的阳极材料。