Pang Yaokun, Xi Fengben, Luo Jianjun, Liu Guoxu, Guo Tong, Zhang Chi
CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, National Center for Nanoscience and Technology (NCNST) Beijing 100083 China
School of Nanoscience and Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China.
RSC Adv. 2018 Feb 12;8(12):6719-6726. doi: 10.1039/c7ra13294h. eCollection 2018 Feb 6.
Alginate, as a natural linear polysaccharide derived from brown sea algae, has the advantage of low toxicity, good biocompatibility, and biodegradability, which has aroused wide interests in recent years. In this study, a degradable triboelectric generator based on an alginate film is presented. The calcium alginate film, which is prepared by a simple freeze-drying method and a crosslinking reaction, has a form of porous structures that are beneficial for triboelectric power generation. The fabricated TENG has a stable output performance with a maximum voltage, current, and power of 33 V, 150 nA, and 9.5 μW, respectively. The performances of the TENG were investigated at different thicknesses of the calcium alginate film and various concentrations of the sodium alginate solution, as well as the degradability of the film with different thicknesses and temperatures. In addition, the TENG was designed for harvesting water wave energy in a low-frequency range from 1 to 4 Hz. This study is promising to provide new insights to develop degradable and eco-friendly TENG based on ocean plants and expand the application range in blue energy.
海藻酸盐作为一种源自褐藻的天然线性多糖，具有低毒性、良好的生物相容性和生物降解性等优点，近年来引起了广泛关注。在本研究中，提出了一种基于海藻酸盐薄膜的可降解摩擦电发电机。通过简单的冷冻干燥法和交联反应制备的海藻酸钙薄膜具有多孔结构形式，有利于摩擦发电。所制备的摩擦电发电机具有稳定的输出性能，最大电压、电流和功率分别为33 V、150 nA和9.5 μW。研究了摩擦电发电机在不同厚度的海藻酸钙薄膜、不同浓度的海藻酸钠溶液下的性能，以及不同厚度和温度下薄膜的降解性。此外，该摩擦电发电机被设计用于收集1至4 Hz低频范围内的水波能量。本研究有望为基于海洋植物开发可降解且环保的摩擦电发电机提供新的见解，并扩大其在蓝色能源中的应用范围。
