Science· 2016Q1
Electromagnetic interference shielding with 2D transition metal carbides (MXenes)
- 5,123citations
- Q1SCImago
- 2016year
Short summary
A 45-micrometer-thick Ti3C2Tx MXene film achieved an unprecedented 92 decibels of electromagnetic interference (EMI) shielding, significantly outperforming existing synthetic materials of comparable thickness.
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Key points
- A 45-micrometer Ti3C2Tx MXene film achieved 92 dB EMI shielding effectiveness.
- Performance is attributed to high electrical conductivity (4600 S/cm) and internal reflections.
- The material is mechanically flexible and can be easily coated onto surfaces.
- Achieved shielding is the highest for synthetic materials of comparable thickness.
AI-generated from the title and abstract; the full text is not read.
Abstract
Materials with good flexibility and high conductivity that can provide electromagnetic interference (EMI) shielding with minimal thickness are highly desirable, especially if they can be easily processed into films. Two-dimensional metal carbides and nitrides, known as MXenes, combine metallic conductivity and hydrophilic surfaces. Here, we demonstrate the potential of several MXenes and their polymer composites for EMI shielding. A 45-micrometer-thick Ti3C2Tx film exhibited EMI shielding effectiveness of 92 decibels (>50 decibels for a 2.5-micrometer film), which is the highest among synthetic materials of comparable thickness produced to date. This performance originates from the excellent electrical conductivity of Ti3C2Tx films (4600 Siemens per centimeter) and multiple internal reflections from Ti3C2Tx flakes in free-standing films. The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.
The authors' abstract, as published at the source. Science, 2016 · DOI ↗
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Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science