@article{Guo2026, 
author = {Hong Guo and Boyang Hu and Huiting Shan and Xiao Yang and Baoan Li},
title = {Janus-type flexible phase change composite for wearable thermal management and electromagnetic interference shielding},
year = {2026},
journal = {Nano Research},
keywords = {flexible phase change materials (PCMs), Janus structure, wearable thermal management, electromagnetic interference (EMI) shielding, energy storage and conversion},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94909156},
doi = {10.26599/NR.2026.94909156},
abstract = {Phase change materials (PCMs) are promising candidates for facilitating zero-energy thermal management on account of their constant phase-transition temperatures and excellent thermal storage capacity. However, low thermal conductivity, solid-state rigidity, and weak electromagnetic interference (EMI) shielding effectiveness are long-standing challenges limiting PCM-based wearable thermal regulation for portable flexible electronic devices. Herein, a Janus-type flexible phase change composite film is fabricated via a simple and low-cost phase inversion and direct spraying strategy, which incorporates an innovative combination of graphene nanoplatelets-cobalt nanoparticles@polyvinylidene fluoride (GNP-Co@PVDF) as the porous skeleton and MXene@poly tannin acid (PTA) as the sprayed layer. Resultantly, the tailored flexible composite film achieves a 960% improvement on thermal conductivity relative to paraffin, coupled with prominent EMI-shielding performance of 38.9~62.5 dB and desirable enthalpy density of 146.9 J g-1. Besides, this film also exhibits leakage-resistant property, multi-source-driven thermal responsiveness, shape memory feature, and robust cyclic stability. These integrated performances substantially broaden its application potential for advanced thermal management of smart portable electronics.}
}