一种可食用营养的超高能量密度胃内锌离子微型超级电容器,ACS Nano

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一种可食用营养的超高能量密度胃内锌离子微型超级电容器
ACS Nano ( IF 15.8 ) Pub Date : 2022-09-01 , DOI: 10.1021/acsnano.2c06656
Kaiyue Chen ₁ , Liben Yan ₂ , Yukai Sheng ₃ , Yu Ma ₄ , Liangti Qu ₅ , Yang Zhao ₃

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同时结合高能量输出和生物利用度的微型储能装置可以极大地促进绿色、安全和无毒的体内检测的实用性，例如用于胃肠道的无创监测或治疗，这仍然具有挑战性。在此，我们报告了可食用和营养的锌离子基混合微型超级电容器 (ZMSCs)，它由可食用的活性炭微阴极和锌微阳极组成，可以插入标准尺寸的胶囊中并在猪胃中摄入。具有灵活性、重量轻和形状适应性等特点，单个微型器件显示出 215.1 μWh cm ^{–2的高能量密度}，优于最先进的生物相容性 SCs/MSCs 甚至是之前报道的传统 ZMSCs。它还提供 605 mF cm ^–2的面积电容和 1.8 V 的高工作电压，超过了小型商用纽扣电池（1.55 V，RENATA 337）。体内外综合研究表明，具有高生物相容性和安全性的ZMSCs不仅可以在猪胃中不用升压器的电力电子设备，而且在剂量范围内作为微量元素锌的营养补充剂，以及能够对大肠杆菌具有强效抗菌活性在放电过程中。这项工作为高性能可食用储能装置的设计和制造提供了一个例子。

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An Edible and Nutritive Zinc-Ion Micro-supercapacitor in the Stomach with Ultrahigh Energy Density

Miniature energy storage devices simultaneously combining high energy output and bioavailability could greatly promote the practicability of green, safe, and nontoxic in vivo detection, such as for noninvasive monitoring or treatment in the gastrointestinal tract, which is still challenging. Herein, we report ingestible and nutritive zinc-ion-based hybrid micro-supercapacitors (ZMSCs) consisting of an edible active carbon microcathode and zinc microanode, which can be inserted into a standard-sized capsule and ingested in a pig stomach. With features including flexibility, light weight, and shape adaptability, a single microdevice displays a high energy density of 215.1 μWh cm^–2, superior to that of state-of-the-art biocompatible SCs/MSCs and even traditional ZMSCs reported previously. It also delivers an areal capacitance of 605 mF cm^–2 and a high working voltage of 1.8 V, exceeding that of miniaturized commercial button batteries (1.55 V, RENATA 337). Comprehensive studies in vivo and in vitro demonstrate that the ZMSCs with high biocompatibility and safety not only power electronic equipment in the porcine stomach without a voltage booster but also act as a nutritional supplement of trace element zinc within the dose range, as well as the ability of potent antibacterial activity against bacterium Escherichia coli during the discharging process. This work provides an example for the design and fabrication of edible energy storage devices with high performance.

更新日期：2022-09-01

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