材料科学
静电纺丝
微电子
热塑性聚氨酯
功率密度
葡萄糖氧化酶
纳米技术
纳米纤维
阴极
热塑性塑料
碳纳米管
复合材料
功率(物理)
电气工程
聚合物
生物传感器
工程类
物理
量子力学
弹性体
作者
Shoujie Guan,Jingxi Wang,Yang Yang,Xun Zhu,Jianping Zhou,Dingding Ye,Rong Chen,Hongwei Dai,Qiang Liao
标识
DOI:10.1002/adfm.202303134
摘要
Abstract With the emerging demand of implantable microelectronics, it essentially requires the fully integrated and reliable power supplies. The study reports a stretchable and flexible electrospinning‐based glucose/O 2 biofuel cell with glucose oxidase bioanode, Pt/C cathode and thermoplastic polyurethane substrate, which is capable for adapting to the various stresses and strains caused by individual movement. The rigid benzene rings and elastic chain segments of thermoplastic polyurethane ensure its superior tensile property. Furthermore, the stable covalent connections between the activated carbon nanotubes (CNTs‐COOH) and glucose oxidase inside 3D thermoplastic polyurethane network are established by amide reaction to ensure the rapid direct electron transfer of bioanode and stable power output of device in flexible environments. The biofuel cell exhibits an open circuit voltage of 0.575 V, and high‐power density of 57 µW cm −2 in 5 mM glucose. Moreover, the power‐generation properties of implantable biofuel cell keep steady, and its power density exhibits limited fluctuations on the dorsum of rat when bending, stretching, and twisting in 28 days. There is no obvious local inflammation or systemic abnormalities in rats. It satisfies the impressive biocompatible requirement, demonstrating the promising potential of electrospinning‐based biofuel cell as a robust self‐sustained power source for implantable electronics.
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