Abstract:
In recent years, polysaccharides have emerged as a promising alternative for the development of environmentally friendly materials. Polysaccharide-based materials have been mainly studied for applications in the food, packaging, and biomedical industries. However, many investigations report processing routes and treatments that enable the modification of the inherent properties of polysaccharides, making them useful as materials for energy applications. The control of the ionic and electronic conductivities of polysaccharide-based materials allows for the development of solid electrolytes and electrodes. The incorporation of conductive and semiconductive phases can modify the permittivities of polysaccharides, increasing their capacity for charge storage, making them useful as active surfaces of energy harvesting devices such as triboelectric nanogenerators. Polysaccharides are inexpensive and abundant and could be considered as a suitable option for the development and improvement of energy devices. This review provides an overview of the main research work related to the use of both common commercially available polysaccharides and local native polysaccharides, including starch, chitosan, carrageenan, ulvan, agar, and bacterial cellulose. Solid and gel electrolytes derived from polysaccharides show a wide range of ionic conductivities from 0.0173 × 10-3 to 80.9 × 10-3 S cm-1. Electrodes made from polysaccharides show good specific capacitances ranging from 8 to 753 F g-1 and current densities from 0.05 to 5 A g-1. Active surfaces based on polysaccharides show promising results with power densities ranging from 0.15 to 16 100 mW m-2. These investigations suggest that in the future polysaccharides could become suitable materials to replace some synthetic polymers used in the fabrication of energy storage devices, including batteries, supercapacitors, and energy harvesting devices.
摘要:
近年来,多糖已成为开发环保材料的有希望的替代品。主要研究了多糖基材料在食品中的应用,包装,和生物医学产业。然而,许多研究报告加工路线和处理,使多糖的固有性质的修改,使它们用作能源应用的材料。对基于多糖的材料的离子和电子电导率的控制允许开发固体电解质和电极。导电相和半导体相的掺入可以改变多糖的介电常数,增加他们的电荷存储容量,使它们用作能量收集设备的活性表面,如摩擦电纳米发电机。多糖廉价且丰富,可以被认为是开发和改进能源设备的合适选择。这篇综述概述了与使用常见的市售多糖和本地天然多糖有关的主要研究工作,包括淀粉,壳聚糖,角叉菜胶,ulvan,琼脂,和细菌纤维素。衍生自多糖的固体和凝胶电解质的离子电导率范围从0.0173×10-3到80.9×10-3Scm-1。由多糖制成的电极显示出8至753Fg-1的良好比电容和0.05至5Ag-1的电流密度。基于多糖的活性表面显示出有希望的结果,功率密度范围为0.15至16100mWm-2。这些研究表明,在未来的多糖可以成为合适的材料,以取代一些合成聚合物用于制造储能设备,包括电池,超级电容器,和能量收集装置。