Flexible and Stretchable Enzymatic Biofuel Cell with High Performance Enabled by Textile Electrodes and Polymer Hydrogel Electrolyte

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2021-12-22 DOI:10.1021/acs.nanolett.1c03621

Zilin Chen, Yao Yao, Tian Lv, Yunlong Yang, Yanan Liu, Tao Chen*

引用次数: 7

Abstract

Biofuel cells with good biocompatibility are promising to be used as the power source for flexible and wearable bioelectronics. We here report a type of highly flexible and stretchable biofuel cells, which are enabled by textile electrodes of graphene/carbon nanotubes (G/CNTs) composite and polymer hydrogel electrolyte. The CNT array covalently grown from a graphene layer not only can be served as a conducting substrate to immobilize enzyme molecules but also can provide efficient charge transport channels between the enzyme and graphene electrode. As a result, the developed biofuel cells deliver a high open-circuit voltage of 0.65 V and output power density of 64.2 μW cm^–2, which are much higher than previously reported results. Benefiting from the unique textile structure of electrodes and the polymer hydrogel electrolyte, the biofuel cells exhibit high retention of power density after 400 bending cycles and even stretched to a high strain of 60%.

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纺织电极和聚合物水凝胶电解质实现的高性能柔性和可拉伸酶生物燃料电池

生物燃料电池具有良好的生物相容性，有望作为柔性和可穿戴生物电子学的电源。我们在此报告了一种高度柔性和可拉伸的生物燃料电池，它是由石墨烯/碳纳米管(G/CNTs)复合材料和聚合物水凝胶电解质的纺织电极实现的。在石墨烯层上共价生长的碳纳米管阵列不仅可以作为固定酶分子的导电底物，而且可以在酶和石墨烯电极之间提供有效的电荷传输通道。结果表明，该生物燃料电池具有0.65 V的高开路电压和64.2 μW cm-2的输出功率密度，大大高于之前报道的结果。得益于独特的纺织结构电极和聚合物水凝胶电解质，生物燃料电池在400次弯曲循环后具有很高的功率密度保持率，甚至拉伸到60%的高应变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.