金属@碳纳米片异质界面的协同工程用于双功能电磁波吸收与电化学储能

doi:10.1016/j.actphy.2026.100320

Abstract

Abstract:

The proliferation of wireless communication and electronic devices has intensified the dual challenges of electromagnetic (EM) wave pollution and the demand for high-performance energy storage. To address these issues, we develop a facile strategy to fabricate metal (Cu or Co)-decorated soft carbon porous nanosheet composites, which exhibit a hierarchical porous nanosheet structure with in situ dispersed metallic nanoparticles. Systematic characterization confirms the successful integration of crystalline Cu and Co phases within the carbon matrix. The SC-N/Co composite exhibits exceptional multifunctional performance. As an electromagnetic wave absorber, it achieves a strong reflection loss of -39.10 dB and a broad bandwidth of 6.16 GHz at a thin matching thickness of 1.5 mm. Concurrently, as a lithium-ion battery anode, it delivers high reversible capacity, rate capability, and outstanding long-term cycling stability of ~325 mA h g^-1 after 1000 cycles at 1.0 A g^-1. The superior performance is attributed to synergistic effects, including enhanced interfacial polarization, optimized impedance matching, and improved charge transport kinetics. This study provides a promising pathway for designing carbon-metal composites for dual-functional applications in EM wave management and efficient energy storage.

Key words: Electromagnetic wave absorbing, Terahertz technology, High-entropy MXenes, Dielectric loss

Qi Wei, Yaru Qiu, Tengfei Yang, Yiling Jiang, Shaohan Zhu, Jie Zhou, Congcong Liu, Wenjie Hou, Yue Wang, Dong Liu. Synergistic engineering of heterointerfaces in metal@carbon nanosheets for bifunctional electromagnetic wave absorption and electrochemical energy storage[J]. Acta Phys. -Chim. Sin. 2026, 42(9), 100320. doi: 10.1016/j.actphy.2026.100320

Figures/Tables 5

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Synergistic engineering of heterointerfaces in metal@carbon nanosheets for bifunctional electromagnetic wave absorption and electrochemical energy storage

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