Mao Wenfeng, Yue Wei, Xu Zijia, Chang Shiyong, Hu Qianqian, Pei Feng, Huang Xiangdong, Zhang Jingbo, Li Dejun, Liu Gao, Ai Guo
Tianjin Key Laboratory of Structure and Performance for Functional Molecules, MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, College of Chemistry, Tianjin Normal University, Tianjin 300387, China.
Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China.
ACS Nano. 2020 Apr 28;14(4):4741-4754. doi: 10.1021/acsnano.0c00620. Epub 2020 Mar 20.
Pursuing scalable production of porous carbon with facile and environmentally friendly synthesis methodology is a global goal. Herein, a unique hierarchical porous graphitic carbon (HPGC) with outstanding textural characteristics is achieved by a special synergistic activation mechanism, in which the low-temperature molten state of polymorphisms can induce a high-rate liquid phase porous activation. HPGC with high specific surface area (SSA, ∼2571 m g) and large pore volume (PV, ∼2.21 cm g) can be achieved, which also possesses the capability to tune textural characteristics (.., SSA, PV, pore size distribution, .) within a wide range. Furthermore, the pilot-scale production of HPGC is accomplished, which shows similar textural characteristics to the lab-scale HPGC. Due to the unique structure of HPGC and the capability of the textural control, it can be applicable in a variety of energy storage, energy conversion, and catalysis applications. The applications of pilot-scale HPGC products in supercapacitors and lithium sulfur batteries are highlighted in this work. Furthermore, the synergistic activation strategy can be promoted to other alkali-based carbon activation routes, which can open up new possibilities for the activated carbon production and lead to more widespread industrialized applications of HPGC.
采用简便且环保的合成方法实现多孔碳的规模化生产是一个全球目标。在此，通过一种特殊的协同活化机制制备出了具有优异结构特性的独特分级多孔石墨化碳（HPGC），其中多晶型物的低温熔融态可引发高速液相多孔活化。能够制得具有高比表面积（SSA，约2571 m²/g）和大孔体积（PV，约2.21 cm³/g）的HPGC，其还具备在很宽范围内调节结构特性（如SSA、PV、孔径分布等）的能力。此外，完成了HPGC的中试规模生产，其显示出与实验室规模的HPGC相似的结构特性。由于HPGC的独特结构以及结构可控能力，它可应用于多种能量存储、能量转换及催化应用。这项工作突出了中试规模HPGC产品在超级电容器和锂硫电池中的应用。此外，协同活化策略可推广至其他碱基金属碳活化路线，这可为活性炭生产开辟新的可能性，并促使HPGC得到更广泛的工业化应用。
