Fabricating lignin-based carbon nanofibers as versatile supercapacitors from food wastes. 2022

Boyu Du, and Xing Wang, and Lanfang Chai, and Xiaohui Wang, and Zheng Pan, and Xiaohong Chen, and Jinghui Zhou, and Run-Cang Sun
Liaoning Key Laboratory of Lignocellulose Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, Liaoning 116034, China.

Recently, the high-value utilization of food wastes has attracted great interest in sustainable development. Focusing on the major application of electrochemical energy storage (ECES), light-weight lignin-based carbon nanofibers (LCNFs) were controllably fabricated as supercapacitors from melon seed shells (MSS) and peanut shells (PS) through electrospinning and carbonizing processes. As a result, the optimal specific capacitance of 533.7 F/g in three-electrode system, energy density of 69.7 Wh/kg and power density of 780 W/Kg in two-electrode system were achieved. Surprisingly, the LCNFs also presented a satisfied electromagnetic absorption property: The minimum reflection loss (RL) value reached -37.2 dB at an absorbing frequency of 7.98 GHz with an effective frequency (RL < 10 dB) of 2.24 GHz (6.88 to 9.12 GHz) at a thickness of 3.0 mm. These features make the multifunctional LCNFs highly attractive for light-weight supercapacitor electrodes and electromagnetic wave absorbers applications.

UI MeSH Term Description Entries
D008031 Lignin The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed) Lignins
D012037 Refuse Disposal The discarding or destroying of garbage, sewage, or other waste matter or its transformation into something useful or innocuous. Waste Disposal, Solid,Disposal, Refuse,Disposal, Solid Waste,Disposals, Refuse,Disposals, Solid Waste,Refuse Disposals,Solid Waste Disposal,Solid Waste Disposals,Waste Disposals, Solid
D002244 Carbon A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel. Carbon-12,Vitreous Carbon,Carbon 12,Carbon, Vitreous
D012639 Seeds The encapsulated embryos of flowering plants. They are used as is or for animal feed because of the high content of concentrated nutrients like starches, proteins, and fats. Rapeseed, cottonseed, and sunflower seed are also produced for the oils (fats) they yield. Diaspores,Elaiosomes,Embryos, Plant,Plant Embryos,Plant Zygotes,Zygotes, Plant,Diaspore,Elaiosome,Embryo, Plant,Plant Embryo,Plant Zygote,Seed,Zygote, Plant
D057139 Nanofibers Submicron-sized fibers with diameters typically between 50 and 500 nanometers. The very small dimension of these fibers can generate a high surface area to volume ratio, which makes them potential candidates for various biomedical and other applications. Nanofiber
D019662 Cucurbitaceae The gourd plant family of the order Violales, subclass Dilleniidae, class Magnoliopsida. It is sometimes placed in its own order, Cucurbitales. 'Melon' generally refers to CUCUMIS; CITRULLUS; or MOMORDICA. Coccinia,Gourd, Ivy,Ivy Gourd,Melons,Melothria,Fevillea,Coccinias,Fevilleas,Gourds, Ivy,Ivy Gourds,Melon,Melothrias
D025802 Electric Capacitance The ability of a substrate to retain an electrical charge. Capacitance, Electrical,Electrical Capacitance,Capacitance, Electric
D065966 Absorption, Physicochemical The physical process of passing into, or being taken up or taken in by a substance. Physicochemical Absorption

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