Polydopamine–cellulose nanofiber composite for flexible electrode material
Polydopamine–cellulose nanofiber composite for flexible electrode material
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DOI：
10.1088/1361-665x/abe184
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发表时间：
2021-03
影响因子：
4.1
通讯作者：
Ruth M Muthoka;Sunanda Roy;H. C. Kim;H. Yoon;L. Zhai;Jaehwan Kim
中科院分区：
文献类型：
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作者：
Ruth M Muthoka;Sunanda Roy;H. C. Kim;H. Yoon;L. Zhai;Jaehwan Kim
本研究旨在通过将聚多巴胺（PDA）与纤维素纤维（CNF）共混制备一种柔性多巴胺基电极材料。受其独特的粘附行为的启发，多巴胺，一种仿生蛋白质，被用来在CNF之间形成强粘附。在本文中，我们报道了PDA浓度对产生PDA-CNF复合材料的影响，该复合材料显示出良好的电化学氧化还原响应、良好的机械性能和改善的热稳定性。当CNF：PDA = 5：2.5时，PDA-CNF复合材料的弹性模量、断裂应变和韧性最高。PDA-CNF工作电极使用微加工工艺制成。循环伏安分析表明，高离子透过CNF骨架结构和氧化过程中的PDA在PDA-CNF电极。这些发现表明PDA-CNF复合材料在利用高机械柔性和热稳定性的组合的柔性电极应用中用于增强寿命的可行性。
This research is intended to develop a flexible and dopamine-based electrode material by blending polydopamine (PDA) with cellulose nanofiber (CNF). Inspired by its unique adhesion behavior, dopamine, a biomimetic protein, was utilized to form a strong adhesion between the CNFs. Herein, we report PDA concentration’s effect to produce PDA-CNF composite showing good electrochemical redox response, good mechanical properties, and improved thermal stability. The PDA-CNF composite with CNF:PDA = 5:2.5 showed the highest Young’s modulus, the strain at break, and toughness among other CNF:PDA combination composites. A PDA-CNF working electrode was made using a microfabrication process. Cyclic voltammetry analysis showed high ion permeability through the CNF backbone structure and oxidation process by PDA in PDA-CNF electrode. These findings indicate the feasibility of the PDA-CNF composite for enhanced longevity in flexible electrode applications utilizing the combination of high mechanical flexibility and thermal stability.