A pH‐Sensitive Stretchable Zwitterionic Hydrogel with Bipolar Thermoelectricity

Author:

Lee Ling‐Chieh1,Huang Kang‐Ting2,Lin Yen‐Ting1,Jeng U‐Ser3ORCID,Wang Chia‐Hsin3ORCID,Tung Shih‐Huang4ORCID,Huang Chun‐Jen2ORCID,Liu Cheng‐Liang15ORCID

Affiliation:

1. Department of Materials Science and Engineering National Taiwan University Taipei 10617 Taiwan

2. Department of Chemical and Materials Engineering National Central University Taoyuan 32001 Taiwan

3. National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan

4. Institute of Polymer Science and Engineering National Taiwan University Taipei 10617 Taiwan

5. Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei 10617 Taiwan

Abstract

AbstractAmid growing interest in using body heat for electricity in wearables, creating stretchable devices poses a major challenge. Herein, a hydrogel composed of two core constituents, namely the negatively‐charged 2‐acrylamido‐2‐methylpropanesulfonic acid and the zwitterionic (ZI) sulfobetaine acrylamide, is engineered into a double‐network hydrogel. This results in a significant enhancement in mechanical properties, with tensile stress and strain of up to 470.3 kPa and 106.6%, respectively. Moreover, the ZI nature of the polymer enables the fabrication of a device with polar thermoelectric properties by modulating the pH. Thus, the ionic Seebeck coefficient (Si) of the ZI hydrogel ranges from −32.6 to 31.7 mV K−1 as the pH is varied from 1 to 14, giving substantial figure of merit (ZTi) values of 3.8 and 3.6, respectively. Moreover, a prototype stretchable ionic thermoelectric supercapacitor incorporating the ZI hydrogel exhibits notable power densities of 1.8 and 0.9 mW m−2 at pH 1 and 14, respectively. Thus, the present work paves the way for the utilization of pH‐sensitive, stretchable ZI hydrogels for thermoelectric applications, with a specific focus on harvesting low‐grade waste heat within the temperature range of 25–40 °C.

Funder

Ministry of Education

National Taiwan University

National Science and Technology Council

Publisher

Wiley

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3