China National Pulp and Paper Research Institute Co., Ltd., Beijing 100102, China; National Engineering Lab for Pulp and Paper, Beijing 100102, China.
Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China.
Int J Biol Macromol. 2020 Oct 15;161:666-673. doi: 10.1016/j.ijbiomac.2020.06.096. Epub 2020 Jun 13.
In this paper, a novel way for high value-added application of lignosulfonate is presented. In this study, we use lignosulfonate nanosheets to fabricate a free-standing, binder-free, ultrathin and light-weight conductive film electrode via vacuum filtration method. The results show that LS is a promising candidate material for the preparation of electrochemical capacitor film electrode. It is worth mentioning that we use non-toxic, pollution-free aqueous solution (water) over organic solvents as the dispersion during the reductive graphene oxide (RGO) preparation process. The electrochemical measurements exhibit that the resistivity of lignosulfonate nanosheets/RGO (LNRGO) film electrode is 0.66 × 10 kΩ cm. The specific capacitance of the LNRGO film electrode is calculated to be 120 mF cm at the current density of 0.2 mA cm, which is approximately 6.67 times larger than that of RGO-water film electrode.
本文提出了一种将木质素磺酸盐进行高附加值应用的新方法。在这项研究中，我们使用木质素磺酸盐纳米片通过真空过滤法制备了一种独立的、无粘结剂的、超薄和轻质的导电薄膜电极。结果表明，LS 是制备电化学电容器薄膜电极的一种很有前途的候选材料。值得一提的是，我们使用无毒、无污染的水溶液（水）代替有机溶剂作为还原氧化石墨烯（RGO）制备过程中的分散剂。电化学测量表明，木质素磺酸盐纳米片/还原氧化石墨烯（LNRGO）薄膜电极的电阻率为 0.66×10 kΩ cm。在电流密度为 0.2 mA cm 时，LNRGO 薄膜电极的比电容计算值为 120 mF cm，约为 RGO-水薄膜电极的 6.67 倍。
