Activation of peroxymonosulfate by single atom Co-N-C catalysts for high-efficient removal of chloroquine phosphate via non-radical pathways: Electron-transfer mechanism

Review on microbial fuel cells applications, developments and costs.

The past several years have witnessed great progress in electrocatalytic applications of transition-metal-based materials through electronic modulation resulting from d-d and d-p orbital coupling. Newly developed rare-earth-based materials with specific 4f orbital occupancy also reveal a significant function of electronic modulation in enhanced electrocatalytic activity, whereas there is a shortage of systematic reviews reporting the most recent progress in electrocatalysis. This review provides a timely and comprehensive summary of major achievements regarding rare earth (RE)-based electrocatalytic materials to address future investigation directions. We start with a brief introduction of the development of RE-based electrocatalysts and their advantages in electrocatalysis. Then we systematically summarize various RE-based materials, including alloys, perovskites, hybrids, and single atoms, that have been developed over the last 5 years. Finally, challenges and perspectives are presented to expedite future progress and provide some research guidance for RE-based materials. 

Recent advances in rare-earth-based materials for electrocatalysis

Enhancing bifunctional electrodes of oxygen vacancy abundant ZnCo2O4 nanosheets for supercapacitor and oxygen evolution

Perovskite Oxides for Cathodic Electrocatalysis of Energy-Related Gases: From O2 to CO2 and N2

Accelerating the startup of microbial fuel cells by facile microbial acclimation

Carbon-based catalysts with transition metal active sites hold great promise for electrochemically catalyzing the oxygen reduction reaction (ORR). However, it is still challenging to fabricate carbon catalysts containing transition metal active sites, which possess excellent and pH-universal capabilities of catalyzing the ORR, in a cost-effective and facile way. Here, using naturally abundant wood ear as a precursor, we demonstrate that carbon-based catalysts with Co components, named Co–C catalysts, can be prepared by an impregnation–precarbonization–activation strategy. We find that the obtained catalysts possess multiple catalytically active sites, including N heteroatoms, intrinsic defects, integrated Co nanoparticles, and well dispersed CoNx structures. The unique features endow our Co–C catalysts with a pH-universal catalytic capability, enabling them to effectively catalyze the ORR over a wide pH range. In an alkaline electrolyte, the performance of our optimum Co–C catalyst can compete with that of the benchmark Pt/C catalyst. Particularly, our optimum Co–C catalyst can outperform the Pt/C catalyst when applied in both alkaline and neutral Zn–air fuel cells. Based on our investigations, the incorporated Co nanoparticles should play a significant role in boosting the catalysis of the ORR in an alkaline electrolyte, while the CoNx structures in the matrix can contribute to improve the oxygen reduction performance in a neutral electrolyte. These results may open up a simple way to fabricate noble metal-free electrocatalysts from biomaterials and provide insights into the rational design of ORR catalysts for applications in practical fuel cells.

In situ exsolved Co components on wood ear-derived porous carbon for catalyzing oxygen reduction over a wide pH range

Carbon-based catalysts hold great promise as the oxygen reduction catalyst in fuel cell applications. However, enhancing the catalytic performance of carbon-based catalysts through a facile way is still challenging. Here,...

Carbon nanofiber-based catalysts derived from polyacrylonitrile for efficient oxygen reduction in alkaline and neutral Zn-air batteries

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Perovskite Oxides for Cathodic Electrocatalysis of Energy-Related Gases: From O2 to CO2 and N2

Accelerating the startup of microbial fuel cells by facile microbial acclimation

In situ exsolved Co components on wood ear-derived porous carbon for catalyzing oxygen reduction over a wide pH range

Carbon nanofiber-based catalysts derived from polyacrylonitrile for efficient oxygen reduction in alkaline and neutral Zn-air batteries