Enhanced Power Generation from the Interaction between Sweat and Electrodes for Human Health Monitoring

Heting Wu, Lin Xu, Yang Wang, Tongtong Zhang, Hainan Zhang, Chris R. Bowen, Zhong Lin Wang, Ya Yang

Research output: Contribution to journalArticlepeer-review

Abstract

Power generation from human sweat has attracted great attention due to its potential application in waste energy scavenging. However, the development of methods to generate sufficient electricity from sweat to power electronic devices for health monitoring remains a major challenge. Here, we report a wearable sweat-based electricity generator (SEG), in which the power generation mechanism is based on the redox reaction between sweat and electrodes. Due to the increase in oxygen adsorption, both the output current and power of SEG with single-walled carbon nanotubes modified electrode can be remarkably enhanced by 5.6 and 14.7 times compared to SEG with a nanotube-free electrode, respectively. The SEGs have been first utilized to power a wireless heart-rate sensor for sustainably transmitting heart-rate data to a smart phone. Moreover, self-powered sensing of lactic acid has been achieved by electric signals with the current sensitivity of 11.79 mmol·L-1·mA-1, demonstrating applications in human health care.

Original languageEnglish
Pages (from-to)3708-3717
Number of pages10
JournalACS Energy Letters
Volume5
Issue number12
Early online date12 Nov 2020
DOIs
Publication statusPublished - 11 Dec 2020

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry

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