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"Sweat-Driven" MXene Composites with Energy-Storage and Thermal-Management Multifunctions: A Platform for Versatile
Yi Wang1,2, Zhiling Luo1,2, Zhonghua Zheng3
1Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, China.
Small (Weinheim an Der Bergstrasse, Germany)
|December 12, 2023
Summary
This study introduces a novel sweat-driven electronic skin (e-skin) using MXene-carbon nanotube composites. This versatile e-skin offers energy storage and thermal management, utilizing human sweat for enhanced performance and compatibility.
Area of Science:
- Materials Science
- Nanotechnology
- Wearable Electronics
Background:
- Exogenous electronic skins (e-skins) often suffer from complex structures and poor human body compatibility.
- Utilizing human secretions like sweat presents a promising strategy for developing advanced e-skins.
Purpose of the Study:
- To propose and fabricate a novel "sweat-driven" electronic skin with energy-storage and thermal-management capabilities.
- To explore the use of MXene-carbon nanotube (CNT) composites for creating lightweight, versatile e-skins.
Main Methods:
- Layer-by-layer assembly of MXene-CNT composite with paper to create supercapacitors and actuators.
- Utilizing sweat as an electrolyte for energy storage in a trilayer supercapacitor structure.
- Employing a bilayer structure for sweat-driven actuation and personal thermal management.
Main Results:
- Fabrication of a patternable, sweat-driven supercapacitor with an areal capacitance of 282.3 mF cm-2 and high power density (2117.8 µW cm-2).
- Development of a sweat-driven actuator demonstrating a bending curvature of 0.9 cm-1 for thermal management.
- Demonstration of paper's multifunctional role as separator, actuating layer, and sweat reservoir.
Conclusions:
- The "sweat-driven" MXene-CNT composite offers a versatile platform for multifunctional e-skins.
- This approach enhances human-device interaction and provides insights for developing advanced wearable electronics.
