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Ru decorated natural cellulose nanofiber-derived carbon aerogel for efficient hydrogen evolution in alkaline seawater

Author

Listed:
  • Zhang, Qian
  • Guo, Weijia
  • Yang, Yushan
  • Shen, Shunyu
  • Chen, Xin
  • Shao, Kai
  • Wang, Zhenjie
  • Sun, Qingfeng
  • Li, Caicai

Abstract

Highly active, stable and affordable hydrogen evolution reaction (HER) electrocatalysts are intensively needed for global energy conversion systems. Carbon-supported ruthenium (Ru)-based electrocatalysts have been rising stars in recent years and the pursuit of higher activity has arisen intensive research interest. Herein, a novel electrocatalyst with cellulose nanofibers containing abundant carboxyls and hydroxyls as the carbon source to anchor Ru nanoparticles (Ru/NC) was designed and synthesized. Benefiting from the anchoring and dispersion of the carbon substrate to the Ru nanoparticles and the synergistic interaction between the different components, the obtained Ru/NC exhibited optimal HER activity in all the corresponding contrast electrocatalysts, with low overpotentials of 16 mV, 22 mV, and 46 mV to attain 10 mA cm−-2 in 1.0 M KOH, 0.5 M H2SO4 and 1.0 M KOH + seawater, respectively. Further, the Tafel slope of Ru/NC in alkaline seawater indicated that its HER process followed a Volmer-Tafel mechanism. Additionally, the synthesized Ru/NC also displayed excellent stability in different electrolytes. This work will provide a novel and interesting insight into the fabrication of advanced carbon-supported electrocatalysts with resource-rich biomass as cost-effective carbon source.

Suggested Citation

  • Zhang, Qian & Guo, Weijia & Yang, Yushan & Shen, Shunyu & Chen, Xin & Shao, Kai & Wang, Zhenjie & Sun, Qingfeng & Li, Caicai, 2024. "Ru decorated natural cellulose nanofiber-derived carbon aerogel for efficient hydrogen evolution in alkaline seawater," Renewable Energy, Elsevier, vol. 227(C).
    • Handle: RePEc:eee:renene:v:227:y:2024:i:c:s0960148124005330
    DOI: 10.1016/j.renene.2024.120468
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    References listed on IDEAS

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    1. Junjie Mao & Chun-Ting He & Jiajing Pei & Wenxing Chen & Dongsheng He & Yiqing He & Zhongbin Zhuang & Chen Chen & Qing Peng & Dingsheng Wang & Yadong Li, 2018. "Accelerating water dissociation kinetics by isolating cobalt atoms into ruthenium lattice," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    2. Wang, Lili & He, Wurigamula & Yin, Duanduan & Zhang, Helin & Liu, Dongyan & Yang, Ying & Yu, Wensheng & Dong, Xiangting, 2023. "CoN/MoC embedded in nitrogen-doped multi-channel carbon nanofibers as an efficient acidic and alkaline hydrogen evolution reaction electrocatalysts," Renewable and Sustainable Energy Reviews, Elsevier, vol. 181(C).
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