用于自供电多功能可穿戴电子产品热电转换器的甲壳素纳米晶分散碳纳米管墨水,Advanced Science

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用于自供电多功能可穿戴电子产品热电转换器的甲壳素纳米晶分散碳纳米管墨水
Advanced Science ( IF 14.3 ) Pub Date : 2022-10-06 , DOI: 10.1002/advs.202204675
Yunqing He ₁ , Xiaoying Lin ₁ , Yue Feng ₁ , Binghong Luo ₁ , Mingxian Liu ₁

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导电油墨的丝网印刷工艺可以实现用于生产可穿戴电子产品的微/纳米图案的简单和大规模制造。在此，甲壳素纳米晶体 (ChNCs) 用作分散剂，通过超声处理制备具有高粘度和均匀性的多壁碳纳米管 (MWCNT) 油墨。ChNC 可以以非共价方式与 MWCNT 相互作用，包括π – π和疏水相互作用。ChNCs/MWCNT (CCNT) 墨水即使静置 3 个月也不会聚集，最大 MWCNT 浓度为 33 mg mL ^-1分散效率为91.1%。使用 CCNT 墨水，纸基热电发电机 (TEG) 通过丝网印刷技术制造。CCNT涂层纸具有良好的热电和应变传感特性，可以在室温下稳定地收集人体能量，实现自供电。基于 CCNT 涂层纸的 TEG 可以将热电压信号转换为音符，监测人体行为和呼吸频率的变化，并监测关节运动。此外，CCNT 涂层纸对 CCK-8 和活/死染色没有细胞毒性。该工作提出了一种通过添加可再生甲壳素绿色制备多壁碳纳米管基墨水的策略，为多壁碳纳米管基墨水在自供电可穿戴多功能传感器中的应用开辟了一条新途径。

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Carbon Nanotube Ink Dispersed by Chitin Nanocrystals for Thermoelectric Converter for Self-Powering Multifunctional Wearable Electronics

The screen-printing process of conductive ink can realize simple and large-scale manufacture of micro/nano patterns for producing wearable electronic products. Herein, chitin nanocrystals (ChNCs) are used as a dispersant for the preparation of multiwalled carbon nanotube (MWCNT) ink with high viscosity and uniformity by ultrasound treatment. ChNCs can interact with MWCNT in noncovalent ways, including π–π and hydrophobic interactions. ChNCs/MWCNT (CCNT) ink does not aggregate even after standing for 3 months with a maximum MWCNT concentration of 33 mg mL⁻¹ and dispersion efficiency of 91.1%. Using CCNT ink, a paper-based thermoelectric generator (TEG) is manufactured by screen-printing technology. With good thermoelectric and strain sensing properties, CCNT coated paper can stably collect human energy at room temperature to realize self-powering. The CCNT coated paper-based TEG can convert thermal voltage signals into musical notes, monitor the changes in human behavior and respiratory rate, and monitor joint movements. Moreover, CCNT coated paper has no cytotoxicity by CCK-8 and live/dead staining. This work puts forward a strategy of green preparation of MWCNT-based ink by adding renewable chitin, which opens up a new way to apply MWCNT-based ink in self-powering wearable multifunctional sensors.

更新日期：2022-10-06

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