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Fe0.64Ni0.36 nanoparticles encapsulated in carbon nanotubes as efficient anodic catalyst applied to bioenergy harvesting system for enhanced power generation

Author

Listed:
  • Zhu, Xuanyi
  • Qiu, Zhenghui
  • Zheng, Jiyong
  • Zhang, Guanglong
  • Gao, Haiping
  • Lin, Cunguo
  • Zhao, Yue
  • Teng, Yizheng

Abstract

Microbial fuel cell (MFC) is attractive due to the potential for renewable energy extraction from organic matter. Unfortunately, inefficient and unstable power supply with high cost is still a bottleneck for large-scale application of MFCs. In this study, Fe0.64Ni0.36 nanoparticles encapsulated in carbon nanotube (CNT) as anodic catalysts are prepared by the simple two-step pyrolysis reaction. The introduction of Fe0.64Ni0.36@CNT for anode facilitates the enrichment of electroactive bacteria (mainly Desulfobacter and Geoalkalibacter) in anodic biofilm, and the corresponding MFC obtains the maximum power density of 4.88 W/m2. Such improvement can be due not only to the excellent electrical conductivity and bioelectrocatalytic activity of Fe0.64Ni0.36@CNT, but also to the augmentation of microbial extracellular electron transfer (EET) efficiency which is analyzed by density functional theory (DFT) calculation. Ultimately, a bioenergy harvesting system develops via the large-scale preparation of composite materials has successfully provided a consecutive power supply to the temperature sensor. This study presents a large-scale synthesis strategy of efficient electrocatalysts for amplified MFC conducive to serving bioelectric systems.

Suggested Citation

  • Zhu, Xuanyi & Qiu, Zhenghui & Zheng, Jiyong & Zhang, Guanglong & Gao, Haiping & Lin, Cunguo & Zhao, Yue & Teng, Yizheng, 2026. "Fe0.64Ni0.36 nanoparticles encapsulated in carbon nanotubes as efficient anodic catalyst applied to bioenergy harvesting system for enhanced power generation," Renewable Energy, Elsevier, vol. 257(C).
    • Handle: RePEc:eee:renene:v:257:y:2026:i:c:s0960148125024097
    DOI: 10.1016/j.renene.2025.124745
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    References listed on IDEAS

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    1. Dawid Nosek & Tomasz Mikołajczyk & Agnieszka Cydzik-Kwiatkowska, 2023. "Anode Modification with Fe 2 O 3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater," IJERPH, MDPI, vol. 20(3), pages 1-21, January.
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