In this research, core/shell structured nanocellulose (NC)/poly(o-Methoxyaniline) (POANI) nanocomposites for electrochromic applications were synthesized by controllable in situ chemical oxidative polymerization. The NC/POANI nanocomposites with different contents of NC can be obtained simply by controlling the relative proportions of the monomers and NC in the polymerization system with hydrochloric acid as the dopant and ammonium persulfate as the oxidant. Films based on the NC/POANI nanocomposites were successfully fabricated by spray-coating technique. The nanocomposite films showed the combination of good film-forming properties and excellent electrochromic behavior. The film based on NC/POANI nanocomposites containing 40% NC exhibited higher optical contrast (81% at 665 nm) and better cycling stability (sustaining 84% of its initial optical contrast after 500 times cyclic test) compared with pure POANI film. Such NC/POANI nanocomposites with excellent electrochromic performance demonstrate great promise towards achieving the ideal electrochromic applications.

在这项研究中，核/壳结构纳米纤维素（NC）/聚（o通过可控的原位化学氧化聚合合成了用于电致变色应用的β-甲氧基苯胺（POANI）纳米复合材料。通过以盐酸为掺杂剂，过硫酸铵为氧化剂，控制聚合体系中单体与NC的相对比例，可以简单地得到NC含量不同的NC / POANI纳米复合材料。通过喷涂技术成功制备了基于NC / POANI纳米复合材料的薄膜。纳米复合膜显示出良好的成膜性能和优异的电致变色行为的组合。与纯POANI膜相比，基于NC / POANI纳米复合材料（含40％NC）的薄膜表现出更高的光学对比度（在665 nm处为81％）和更好的循环稳定性（在500次循环测试后仍保持其初始光学对比度的84％）。这种具有出色电致变色性能的NC / POANI纳米复合材料显示出实现理想电致变色应用的巨大希望。