Laser-Induced Graphene Derived from Kraft Lignin for Flexible Supercapacitors
Laser-Induced Graphene Derived from Kraft Lignin for Flexible Supercapacitors
复制标题
DOI：
10.1021/acsomega.0c01293
复制
发表时间：
2020-06-23
期刊：
影响因子：
4.1
通讯作者：
Wan, Caixia
中科院分区：
文献类型：
--
作者：
Mahmood, Faisal;Zhang, Hanwen;Wan, Caixia
以硫酸盐木质素为原料，采用激光直接刻写技术制备了多孔石墨烯。这种激光诱导石墨烯（LIG）具有分层结构，具有三维（3D）互连网络，非常适合从硫酸盐木质素/聚环氧乙烷（KL/PEO）薄膜转移到聚二甲基硅氧烷（PDMS）上。结果表明，合成的LIG/ PDMS复合材料保持了LIG固有的多孔结构和电活性位点。利用LIG/PDMS复合材料制备的超级电容器具有良好的电化学性能和良好的循环稳定性。经过10000次循环后，电容量仍保持在90%以上。此外，由于其高柔韧性，SCs能够承受弯曲变形而不会显着牺牲其电容。基于木质素衍生LIG的柔性sc制造技术显示了使用低成本，可再生材料制造便携式和可穿戴电子产品的巨大潜力。
Porous graphene was photothermally induced from kraft lignin via direct laser writing. This laser-induced graphene (LIG) possessed a hierarchical structure with a three-dimensional (3D) interconnected network ideal for its transfer from the kraft lignin/poly(ethylene oxide) (KL/PEO) film onto polydimethylsiloxane (PDMS). The resultant LIG/ PDMS composite was shown to keep the intrinsic porous structure and electrically active sites of LIG. The supercapacitors (SCs) fabricated using the LIG/PDMS composite exhibited good electrochemical performance and excellent cyclic stability. More than 90% capacitance was retained after 10 000 cycles. Moreover, due to their high flexibility, the SCs were able to endure bending deformation without significantly sacrificing their capacitance. The proposed technology for the fabrication of flexible SCs based on lignin-derived LIG demonstrated great potential to use a low-cost, renewable material for the manufacture of portable and wearable electronics.