State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics Science and Engineering, Sun Yat-sen (Zhongshan) University , Guangzhou 510275, People's Republic of China.
ACS Appl Mater Interfaces. 2014 Dec 10;6(23):21661-8. doi: 10.1021/am506747z. Epub 2014 Nov 25.
Novel carbon nanostructures, e.g., carbon nanotubes (CNTs), graphene, hierarchical porous graphitic carbon (HPGC), and ordered mesoporous carbon (CMK-3), have been significantly forwarding the progress of energy storage and conversion. Advanced electrodes or hybrid electrodes based on them are springing up one after another. To step further, a generic synthetic approach to large scale hierarchical porous graphitic carbon microbubbles (HPGCMBs) is developed by zinc powder templated organic precursor impregnation method. The facile technique features scalable (yield: once more than 200 mg), in situ heteroatom's doping (doping ratio: more than 26%) and hierarchical-pore-creating traits (pore volume: 1.01 cm(3) g(-1)). Adjustable graphitic content, doping species and amount are readily realized through varying the organic precursors. Rationally, good conductivity, fast kinetics, and abundant ion reservoirs are entirely achieved. To be applied in practice, state-of-the-art anodes for lithium-ion batteries are fabricated. Benefiting from the large specific surface area, rich heteroatoms, and hierarchical pores, the HPGCMBs electrodes exhibit excellent electrochemical properties. Besides superior storage capability of more than 1000 mAh g(-1) at 100 mA g(-1), stable cycling and excellent retention of 370 mAh g(-1) at large rate of 10 A g(-1) are achieved in the meantime.
新型碳纳米结构，例如碳纳米管 (CNT)、石墨烯、分级多孔石墨碳 (HPGC) 和有序介孔碳 (CMK-3)，极大地推动了储能和转换领域的发展。基于这些材料的先进电极或混合电极也如雨后春笋般涌现。为了更进一步，我们通过锌粉模板有机前驱体浸渍法开发了一种通用的大规模分级多孔石墨碳微球 (HPGCMBs) 的合成方法。该简便技术具有可扩展性（产率：一次超过 200 毫克）、原位杂原子掺杂（掺杂比：超过 26%）和分级孔创造特性（孔体积：1.01 cm(3) g(-1)）。通过改变有机前体，很容易实现可调节的石墨含量、掺杂种类和掺杂量。合理地，实现了良好的导电性、快速的动力学和丰富的离子储存库。为了实际应用，我们制备了最新的锂离子电池阳极。得益于大的比表面积、丰富的杂原子和分级孔，HPGCMBs 电极表现出优异的电化学性能。除了在 100 mA g(-1)时超过 1000 mAh g(-1)的优异存储能力外，在 10 A g(-1)的大电流密度下，还实现了稳定的循环和 370 mAh g(-1)的优异保持率。
