Abstract：
In order to obtain a flexible aerogel substrate for conductive materials used in the electrode, polydopamine-anchored cellulose nanofiber (PDA@CNF) was introduced into a polyethylene imine-poly(vinyl alcohol) (PEI-PVA) cross-linking network which used 4-formylphenylboronic acid (4FPBA) as bridge. The incorporation of rigid CNF as a structural scaffold effectively improved the pore architecture of the aerogel, potentially providing substantial advantages for the infiltration and deposition of conductive materials. Additionally, the outstanding stability and flexibility exhibited by the aerogel in aqueous solutions suggest its significant potential for applications in flexible electrodes. Furthermore, electrochemical experiments showed that the rapid pathway formed between PDA and PEI could enhance the charge-transfer rate within the aerogel substrate. It is anticipated that such an enhancement would significantly benefit the electrochemical attributes of the electrode. Inspired by mussels, our introduced PDA-anchored rigid CNF into flexible polymer networks to fabricate aerogel substrates for electrode materials. This study would contribute to the development and utilization of flexible electrodes while reducing carbon footprint in energy production and conversion processes.
摘要：
为了获得用于电极中的导电材料的柔性气凝胶基底，将聚多巴胺锚定的纤维素纳米纤维（PDA@CNF）引入以4-甲酰基苯基硼酸（4FPBA）为桥梁的聚乙烯亚胺-聚（乙烯醇）（PEI-PVA）交联网络中。刚性CNF作为结构支架的掺入有效地改善了气凝胶的孔结构，可能为导电材料的渗透和沉积提供实质性的优势。此外,气凝胶在水溶液中表现出的出色的稳定性和柔韧性表明其在柔性电极中的应用潜力巨大。此外，电化学实验表明，PDA和PEI之间形成的快速通路可以提高气凝胶基质内的电荷转移速率。预期这种增强将显著有益于电极的电化学属性。灵感来自贻贝，我们将PDA锚定的刚性CNF引入到柔性聚合物网络中，以制造用于电极材料的气凝胶基板。这项研究将有助于柔性电极的开发和利用，同时减少能源生产和转换过程中的碳足迹。
