Rational Design of Cellulosic Triboelectric Materials for Self-Powered Wearable Electronics

Abstract

With the rapid development of the Internet of Things and flexible electronic technologies, there is a growing demand for wireless, sustainable, multifunctional, and independently operating self-powered wearable devices. Nevertheless, structural flexibility, long operating time, and wearing comfort have become key requirements for the widespread adoption of wearable electronics. Triboelectric nanogenerators as a distributed energy harvesting technology have great potential for application development in wearable sensing. Compared with rigid electronics, cellulosic self-powered wearable electronics have significant advantages in terms of flexibility, breathability, and functionality. In this paper, the research progress of advanced cellulosic triboelectric materials for self-powered wearable electronics is reviewed. The interfacial characteristics of cellulose are introduced from the top-down, bottom-up, and interfacial characteristics of the composite material preparation process. Meanwhile, the modulation strategies of triboelectric properties of cellulosic triboelectric materials are presented. Furthermore, the design strategies of triboelectric materials such as surface functionalization, interfacial structure design, and vacuum-assisted self-assembly are systematically discussed. In particular, cellulosic self-powered wearable electronics in the fields of human energy harvesting, tactile sensing, health monitoring, human–machine interaction, and intelligent fire warning are outlined in detail. Finally, the current challenges and future development directions of cellulosic triboelectric materials for self-powered wearable electronics are discussed.

Latest developments and trends in electronic skin devices

“…The external pressure stimulus can produce different characteristics of the electrical signal, the contact area, the degree of contact tightness and relative sliding distance, and other factors will affect the characteristics of the generated charge; therefore, by detecting the electrical signal changes, triboelectric pressure sensors can indirectly measure the size of the applied pressure on the sensor. These sensors are self-powered and are suitable for the development of self-powered e-skins [63][64][65][66] .…”

Impact of hydrogen bonding interaction energy on the polymerization kinetics of polymerizable deep eutectic solvent monomers

“…Compared with traditional rigid electronic devices, flexible electronic devices are now widely used in the fields of wearable devices, 1–4 energy storage, 5,6 and medical health monitoring 7–9 due to their advantages of softness, lightness, and portability. As an essential part of electronic devices, conductor materials are important for establishing circuit connections and transmitting current.…”

Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding

“…Demonstrating the potential of flexible electronics technology to merge the realms of information and biology, wearable tactile sensing devices have attracted considerable attention within the domain of human–machine interaction systems [ 1 – 3 ]. Triboelectric sensing devices, relying on contact electrification and electrostatic induction coupling effects, possess the capability to transform applied mechanical stimuli into electrical signals, thereby streamlining the acquisition and quantification of tactile information [ 4 – 6 ].…”