Bai Xiaoxia, Wang Zhe, Luo Jingying, Wu Weiwei, Liang Yanping, Tong Xin, Zhao Zhenhuan
Department of Applied Chemistry, Interdisciplinary Research Center of Smart Sensor, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710126, China.
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China.
Nanoscale Res Lett. 2020 Apr 21;15(1):88. doi: 10.1186/s11671-020-03305-0.
Using biowastes as precursors for the preparation of value-added nanomaterials is critical to the sustainable development of devices. Lignosulphonates are the by-products of pulp and paper-making industries and usually discarded as wastes. In the present study, lignosulphonate is used as the precursor to prepare hierarchical ordered porous carbon with interconnected pores for the electrochemical energy storage application. The unique molecular structure and properties of lignosulphonate ensure the acquisition of high-quality porous carbon with a controllable pore structure and improved physical properties. As a result, the as-prepared hierarchical order porous carbon show excellent energy storage performance when used to assemble the symmetric supercapacitor, which exhibits high-specific capacitance of 289 F g at a current density of 0.5 A g, with the energy density of 40 Wh kg at the power density of 900 W kg. The present study provides a promising strategy for the fabrication of high-performance energy storage devices at low cost.
将生物废弃物用作制备增值纳米材料的前驱体对器件的可持续发展至关重要。木质素磺酸盐是制浆造纸工业的副产品，通常作为废物丢弃。在本研究中，木质素磺酸盐被用作前驱体来制备具有相互连接孔隙的分级有序多孔碳，用于电化学储能应用。木质素磺酸盐独特的分子结构和性质确保获得具有可控孔结构和改善物理性质的高质量多孔碳。结果，所制备的分级有序多孔碳在用于组装对称超级电容器时表现出优异的储能性能，在电流密度为0.5 A g时具有289 F g的高比电容，在功率密度为900 W kg时能量密度为40 Wh kg。本研究为低成本制造高性能储能器件提供了一种有前景的策略。
