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  11. Low-temperature In Situ Constructed Ag-graphene Films For Wearable Electronics With Broadband Emi Shielding, Environmental Tolerance, And Efficient Thermal Management

Low-Temperature In Situ Constructed Ag-Graphene Films for Wearable Electronics with Broadband EMI Shielding, Environmental Tolerance, and Efficient Thermal Management

Qisong Feng1,2, Jiyuan Cong1,3, Guangsheng Liu1,2

  • 1Yunnan International Joint Research Center for Photoelectric Information Materials, School of Materials and Energy, Yunnan University, Kunming, 650500, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 27, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

A novel silver-graphene composite film offers superior electromagnetic interference shielding for flexible electronics. This durable material maintains performance after extreme conditions, enabling advanced wearable applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrical Engineering

Background:

  • Flexible electronics require materials with high conductivity and electromagnetic interference (EMI) shielding.
  • Existing materials often lack the necessary structural stability and performance under harsh conditions.

Purpose of the Study:

  • To develop a high-performance flexible silver-graphene composite film.
  • To achieve superior EMI shielding, electrical conductivity, and structural stability for wearable electronics.

Main Methods:

  • Fabrication of a silver-graphene composite film using a metal-organic decomposition (MOD) ink-graphene hybrid strategy.
  • Selective growth of silver nanoparticles at graphene defect sites to form a conductive network.
  • Characterization of electrical conductivity, EMI shielding effectiveness, structural stability, and thermal conductivity.
Keywords:
environmental toleranceflexible electromagnetic shieldingmetal organic decomposition inksilver‐graphene composite film

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Main Results:

  • The silver-graphene (Ag-G) film achieved an electrical conductivity of 1.9 × 10⁵ S·m⁻¹.
  • An EMI shielding effectiveness of 69.8 dB was recorded over the 8.2-18 GHz frequency range.
  • The film retained over 96% of its EMI shielding effectiveness after harsh treatments, demonstrating exceptional durability.

Conclusions:

  • The developed silver-graphene composite film presents a lightweight, highly reliable solution for electromagnetic protection in flexible wearable electronics.
  • The MOD ink-graphene hybrid strategy enables large-area film fabrication via spray coating.
  • The material's robust performance makes it suitable for demanding applications in flexible electronics.