Acta Phys. -Chim. Sin. ›› 2026, Vol. 42 ›› Issue (9): 100320.doi: 10.1016/j.actphy.2026.100320

• ARTICLE • Previous Articles     Next Articles

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

Qi Wei1, Yaru Qiu2, Tengfei Yang1, Yiling Jiang1, Shaohan Zhu1, Jie Zhou1,*(), Congcong Liu3, Wenjie Hou4,*(), Yue Wang5, Dong Liu1,*()   

  1. 1 School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong Province, China
    2 Department of Pharmacy and Laboratory Medicine, Heze Medical College, Heze 274000, Shandong Province, China
    3 Zibo Municipal General Institute of Inspection and Metrology, Zibo 255000, Shandong Province, China
    4 Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan Province, China
    5 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
  • Received:2026-04-01 Revised:2026-05-04 Accepted:2026-05-08 Published:2026-07-03
  • Contact: Email: tjuzhoujie@163.com (Jie Zhou)byhhwj@163.com (Wenjie Hou)liu_dong@sdut.edu.cn (Dong Liu)

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