<br>绿色低成本碱多酚协同自催化系统可实现自修复和自粘合导电水凝胶的快速凝胶化，用于自供电摩擦纳米发电机,Small

当前位置： X-MOL 学术 › Small › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

绿色低成本碱多酚协同自催化系统可实现自修复和自粘合导电水凝胶的快速凝胶化，用于自供电摩擦纳米发电机
Small ( IF 13.0 ) Pub Date : 2023-10-25 , DOI: 10.1002/smll.202305502
Hongmei Zhang ₁ , Kai Xue ₁ , Xihang Xu ₁ , Xiaohui Wang ₂ , Bing Wang ₁ , Changyou Shao _{1,

2,

3} , Runcang Sun ₁

Affiliation

生物质基水凝胶在灵活、可持续的自供电能源领域引起了广泛关注，但难以以绿色、高效、低成本的方式制造。在此，一种新颖且简便的碱-多酚协同自催化系统最初用于快速凝胶化可自修复和自粘的木质素基导电水凝胶，该水凝胶可以被视为柔性摩擦纳米发电机（TENG）的水凝胶电极。这种协同自催化体系由碱水溶液和含多酚的木质素组成，其中碱激活的过硫酸铵（APS）显着加速自由基的产生并引发单体的聚合，而多酚则充当稳定剂，以避免固有的爆裂聚合。自由基清除能力。此外，木质素生物聚合物和聚丙烯酰胺（PAM）链之间的多个氢键赋予木质素水凝胶优异的粘合性和自修复性能。有趣的是，碱性条件不仅有助于木质素的溶解度，而且还赋予木质素基水凝胶优异的离子电导率，适用于自供电节能楼梯灯带中的柔性TENG，这为软质TENG的工业应用带来了巨大的希望。电子产品。

"点击查看英文标题和摘要"

Green and Low-Cost Alkali-Polyphenol Synergetic Self-Catalysis System Access to Fast Gelation of Self-Healable and Self-Adhesive Conductive Hydrogels for Self-Powered Triboelectric Nanogenerators

Biomass-based hydrogels have attracted great attention in flexible and sustainable self-powered power sources but struggled to fabricate in a green, high-efficiency, and low-cost manner. Herein, a novel and facile alkali-polyphenol synergetic self-catalysis system is originally employed for the fast gelation of self-healable and self-adhesive lignin-based conductive hydrogels, which can be regarded as hydrogel electrodes of flexible triboelectric nanogenerators (TENGs). This synergy self-catalytic system comprises aqueous alkali and polyphenol-containing lignin, in which alkali-activated ammonium persulfate (APS) significantly accelerates the generation of radicals and initiates the polymerization of monomers, while polyphenol acts as a stabilizer to avoid bursting polymerization from inherent radical scavenging ability. Furthermore, multiple hydrogen bonds between lignin biopolymers and polyacrylamide (PAM) chains impart lignin-based hydrogels with exceptional adhesiveness and self-healing properties. Intriguingly, the alkaline conditions not only contribute to the solubility of lignin but also impart superior ionic conductivity of lignin-based hydrogel that is applicable to flexible TENG in self-powered energy-saving stair light strips, which holds great promise for industrial applications of soft electronics.

更新日期：2023-10-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南