Journal
INORGANIC CHEMISTRY
Volume 58, Issue 3, Pages 2031-2041Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b03043
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Funding
- National Natural Science Foundation of China [51772177]
- Science Fund for Distinguished Young Scholars of Shaanxi Province [2018JC-029]
- Shaanxi Science & Technology Coordination & Innovation Project of China [2017TSCXL-GY-08-05]
- Industrialization Foundation of Education Department of Shaanxi Provincial Government [16JF002]
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The present work reports preparation of 3D composites of reduced graphene oxide (RGO) with coral-like LiFePO4 particles in two steps, which involves the fabrication of LiFePO4 particles by the solvothermal method and the subsequent preparation of RGO/coral-like LiFePO4 composites by the etching method. The microwave absorption properties of LiFePO4 particles, coral-like LiFePO4 particles, and the RGO/coral-like LiFePO4 composites were studied. Our results show that the as-prepared RGO/coral-like LiFePO4 composites exhibit significantly improved microwave absorption properties compared with the pure LiFePO4 particles and coral-like LiFePO4 particles. The RGO/coral-like LiFePO4 composite (S-60) possesses optimized reflection loss (RL) performance with an RL value of -61.4 dB and a broad effective absorption bandwidth of 4 GHz (from 11.36 to 14.88 GHz and 16.32 to 16.8 GHz) at the matching thickness of only 2.4 mm. This demonstrates that the RGO/coral-like LiFePO4 composites can be superior candidates for lightweight and high-efficiency microwave absorbers.
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