A biocompatible, thin, wet-adhesive, and high-performance zinc-ion hybrid supercapacitor as an implantable power source for biomedical application

IF 16.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Nano Energy Pub Date : 2024-10-10 DOI:10.1016/j.nanoen.2024.110345
Dandan Li , Jiajun Qiu , Ying-Jie Zhu , Haifeng Zhang , Ming-Guo Ma , Xuanyong Liu , Heng Li
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Abstract

Functional bioelectronic implants necessitate energy storage modules as power sources in vivo. Existing energy storage implants grapple with balancing factors such as high performance, biosafety, mechanical properties matching soft tissues, and conformal adhesion. Herein, we report a thin, flexible, and wet-adhesive zinc-ion hybrid supercapacitor (ZHSC) as an implantable power source with high biocompatibility and superior performance. The thin implantable ZHSC (0.142 mm) comprises a MXene (Ti3C2Tx)-based cathode and a gel electrolyte-integrated Zn anode, with strongly connected interfaces, ensuring good mechanical flexibility and stable electrochemical performance. Specifically, the ZHSC exhibits an areal capacitance of 482.58 mF cm−2 and an energy density of 7.37 mWh cm−3, surpassing majority of recently reported biocompatible energy storage devices. The ZHSC equipped with integrated electrolyte achieves an outstanding capacity retention rate of 96.4 % after 10000 cycles at 5 A g−1, significantly superior to that of a device using a conventional separated electrolyte (75.6 %). The ZHSC also demonstrates excellent wet adhesion upon introduction of a silk protein encapsulation film, which can adhere firmly to curved and wet biological tissues/organs. Comprehensive in vitro and in vivo studies demonstrate that the ZHSC, with high biosafety, can provide stable power supply after implantation in rats. Importantly, the implantable ZHSC can degrade in vivo with no toxic produced substances during the degradation process. This work provides an example for the design and fabrication of biocompatible, thin, and wet-adhesive implantable energy storage devices with superior properties.

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一种生物兼容、薄型、湿粘、高性能锌离子混合超级电容器,作为生物医学应用的植入式电源
功能性生物电子植入物需要储能模块作为体内电源。现有的储能植入物都在努力平衡各种因素,如高性能、生物安全性、与软组织相匹配的机械性能以及保形粘附性。在此,我们报告了一种薄型、柔性、湿粘锌离子混合超级电容器(ZHSC),它是一种具有高生物相容性和卓越性能的植入式电源。这种薄型植入式锌离子混合超级电容器(0.142 毫米)由基于 MXene(Ti3C2Tx)的阴极和凝胶电解质集成的锌阳极组成,界面紧密相连,确保了良好的机械柔韧性和稳定的电化学性能。具体来说,ZHSC 的等面积电容为 482.58 mF cm-2,能量密度为 7.37 mWh cm-3,超过了最近报道的大多数生物兼容储能装置。配备集成电解质的 ZHSC 在 5 A g-1 条件下经过 10000 次循环后,容量保持率达到 96.4%,明显优于使用传统分离电解质的设备(75.6%)。在引入丝蛋白封装膜后,ZHSC 还表现出卓越的湿粘附性,能牢牢粘附在弯曲和潮湿的生物组织/器官上。综合体外和体内研究表明,ZHSC 具有很高的生物安全性,植入大鼠体内后可提供稳定的电力供应。重要的是,植入式 ZHSC 可在体内降解,降解过程中不会产生有毒物质。这项工作为设计和制造具有优良特性的生物相容性、薄型湿粘植入式储能装置提供了范例。
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来源期刊
Nano Energy
Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
30.30
自引率
7.40%
发文量
1207
审稿时长
23 days
期刊介绍: Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.
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