Department of Chemistry, Washington University in St. Louis, St. Louis, MI, 63130, USA.
Institute of Material Science & Engineering, Washington University in St. Louis, St. Louis, MI, 63130, USA.
Nat Commun. 2020 Aug 11;11(1):3882. doi: 10.1038/s41467-020-17708-1.
Fired brick is a universal building material, produced by thousand-year-old technology, that throughout history has seldom served any other purpose. Here, we develop a scalable, cost-effective and versatile chemical synthesis using a fired brick to control oxidative radical polymerization and deposition of a nanofibrillar coating of the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT). A fired brick's open microstructure, mechanical robustness and ~8 wt% α-FeO content afford an ideal substrate for developing electrochemical PEDOT electrodes and stationary supercapacitors that readily stack into modules. Five-minute epoxy serves as a waterproof case enabling the operation of our supercapacitors while submerged underwater and a gel electrolyte extends cycling stability to 10,000 cycles with ~90% capacitance retention.
烧结砖是一种通用的建筑材料，采用已有千年历史的技术生产，其用途历来十分单一。在这里，我们开发了一种可扩展、具有成本效益且用途广泛的化学合成方法，利用烧结砖来控制氧化自由基聚合以及导电聚合物聚（3,4-亚乙基二氧噻吩）（PEDOT）纳米纤维涂层的沉积。烧结砖的开放式微观结构、机械强度和~8wt%α-FeO 含量为开发用于电化学 PEDOT 电极和固定超级电容器的理想基底提供了可能，这些电极和超级电容器很容易堆叠成模块。5 分钟环氧树脂用作防水外壳，使我们的超级电容器在水下运行，凝胶电解质将循环稳定性延长至 10000 次循环，电容保持率约为 90%。
