Lignin‐Based Encapsulation of Liquid Metal Particles for Flexible and High‐Efficiently Recyclable Electronics

Abstract

Room‐temperature liquid metals (RTLMs) have excellent shape reconfiguration capabilities, which make them ideal for flexible electrodes, sensors, and energy devices. However, due to the high surface tension and weak adhesion of RTLM, the types of printing substrates, patterning, and recovery processes are limited. It is essential to develop advanced encapsulation techniques for the patterning of RTLMs. Lignin has great potential for promotion as nanodispersants and nanocarriers because of its abundant hydroxyl groups and good self‐assembly properties. In this work, a green and facile encapsulation method using industrial lignin is reported for stable, uniform, and reproducible patterning of eutectic gallium–indium (EGaIn). Lignin‐encapsulated EGaIn particles exhibit good stability and can be patterned on the surface of various substrates with a simple ballpoint pen. The electrical resistance of the conductive tracks shows little change under bending and twisting (720°) conditions. More importantly, the lignin‐encapsulated system can be easily dissolved and regenerated, which is also supported by molecular dynamics simulations and density functional theory calculations. 96.9% of the EGaIn can be recovered from the system. These characteristics make it very environmentally friendly throughout the preparation process and find applications in flexible sensors, transient circuits, and many other areas.

Incorporation of Cellulose-Based Aerogels into Textile Structures

“…Cellulose is a flexible material that may be used as a matrix or filler to produce goods such as films, paper bases, aerogels, and hydrogels with adsorption capabilities. It is known for its renewability and degradability [ 265 , 266 , 267 , 268 ]. Creating porous carbon with adsorption properties also requires it.…”

Investigation of healing electronic pressure-sensitive soft switch based on liquid metal microfiber

“…The gallium-based LMs at room temperature (RT-GaLMs) is important for the development of smart flexible electronics. In addition, there are many methods to process RT-GaLMs [20,21]. For example, a nonaqueous acetonitrilebased electrolyte possessing high electrochemical stability and chemical orthogonality was used for electrodeposition of EGaIn [21].…”

Galvanic Replacement Synthesis of VOx@EGaIn–PEG Core–Shell Nanohybrids for Peroxidase Mimics

“…Since the Ga 2 O 3 –V 2 O 5 mixture can enhance conductivity by generating highly reactive e – /h + pairs as species, the VO x @EGaIn-PEG nanozyme exhibits superior peroxidase-like activity (5.25 U/mg) compared to V 2 O 5 and can catalyze the generation of hydroxyl radicals from hydrogen peroxide, demonstrating its potential as an efficient component for biosensor applications. At the same time, the self-healing and regenerative properties of LM further endow the nanozymes with good recyclability and cycle preparation stability, laying a solid foundation for its practical application in the field of green, sustainable, and efficient catalysis. Furthermore, we successfully developed a precise and convenient smartphone-assisted colorimetric sensing platform and achieved sensitive, accurate, and convenient in situ monitoring of glucose (a broad detection range of 10–500 μM and a low detection limit of 2.35 μM).…”