Homogeneously supported PtGa NPs on nitrogen-doped mesoporous carbon as an enhanced ORR electro-catalyst

Chen, Yaohui; Xu, Pengfu; Wang, Ruyue; Pan, Xuchao

doi:10.1016/j.matlet.2020.129266

Cited by 9 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…33,34 The alloys and bimetallic nanostructures of transition metals and PGMs are good strategies to reduce the amount of precious metals, which can also improve the catalytic efficiency of the electrocatalysts. [40][41][42][43][44] These methods can enhance the oxygen catalytic kinetics by increasing the active sites and the surface area of the electrocatalysts, providing stable characteristics against chemical oxidation due to the interaction of the d-orbital. In addition, the activation barriers of hydroxyl species in the limiting step can be changed.…”

Section: Conventional Pgm Electrocatalystsmentioning

confidence: 99%

Material design and surface chemistry for advanced rechargeable zinc–air batteries

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Conventional Pgm Electrocatalystsmentioning

confidence: 99%

Material design and surface chemistry for advanced rechargeable zinc–air batteries

et al. 2022

View full text Add to dashboard Cite

show abstract

“…4 However, the power generation performance is limited by the overpotential of the oxygen reduction reaction (ORR) at the cathode. 5 The Pt-based catalysts are efficient MFC cathode catalysts, but they are expensive and scarce.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, single‐chamber MFCs have been extensively studied since the use of air instead of dissolved oxygen in water avoids the energy‐intensive aeration process and greatly improves the scalability of MFC . 4 However, the power generation performance is limited by the overpotential of the oxygen reduction reaction (ORR) at the cathode 5 . The Pt‐based catalysts are efficient MFC cathode catalysts, but they are expensive and scarce.…”

Section: Introductionmentioning

confidence: 99%

Highly active N‐doped non‐precious transition metal Fe@ N–C catalysts for efficient oxygen reduction reaction in microbial fuel cells

Cui

Jiang

Shi

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

In this study, highly active and stable N-doped porous carbon Fe(x)@N-C (x stands for the Fe/terephthalic acid molar ratio) catalysts were prepared from MIL-53(Fe) using inexpensive acetonitrile as N source and their electrochemical performances were also tested. The Fe(x)@N-C showed mainly zero-valent iron phase with small amount of Fe 3 C phase. Among all the prepared composites, Fe(0.3)@N-C possessed the largest surface area and pore volume, and largest number of Fe-N x active sites. The MFC with Fe(0.3)@N-C presented the greatest open voltage of 0.60 V among Fe(x)@N-C, which is closer to the MFC with Pt/C (0.61 V). The power density of Fe(0.3)@N-C in MFC was 604.6 mWÁm À2 . The MFC output voltage of Fe(0.3)@N-C was stabilized at 0.58 ± 0.01 V and maintained at this value for 75 days. The Fe(0.3)@N-C had comparable MFC output voltage as Pt/C and possessed much superior stability to Pt/C, showing a great potential for industrial application in MFC.

show abstract

“…16 In particular, nitrogen doping is widely used to tune electrical, chemical, and catalytic properties of carbon supports to enhance the ORR activity and durability of Pt catalysts. [17][18][19][20][21][22][23][24][25] Nitrogen doping of carbon supports may improve catalyst dispersion on, and anchoring to, the surface, by enhancing porosity and charge transfer from Pt to the adjacent nitrogen atoms, which can lead to increased catalytic activity and catalyst stability. [26][27][28][29][30] Furthermore, the presence of nitrogen can promote the spillover effect of ORR-intermediate adsorbates (e.g.…”

mentioning

confidence: 99%

Nitrogen Plasma Modified Carbons for PEMFC with Increased Interaction with Catalyst and Ionomer

Parnière¹,

Blanchard²,

Cavaliere³

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

Vulcan XC72 carbon black, conventionally used as electrocatalyst support in proton exchange membrane fuel cells (PEMFCs), was doped with nitrogen functionalities by exposing it to nitrogen plasma, and the effect on its morphology, structure and texture and surface properties was investigated. In particular, the strength of the interaction between the modified carbon and Nafion® ionomer was evaluated by isothermal titration calorimetry, and an enhanced exothermic effect was observed on increasing the amount of nitrogen at the Vulcan surface. The undoped and nitrogen-doped carbon blacks were catalyzed with Pt nanoparticles, and the resulting materials were characterized for their electrocatalytic properties toward the oxygen reduction reaction. The electrocatalyst using nitrogen-doped supports are characterized by higher activity and stability, which is attributed to a strong Pt-support interaction promoted by the presence of the heteroatoms.

show abstract

Homogeneously supported PtGa NPs on nitrogen-doped mesoporous carbon as an enhanced ORR electro-catalyst

Cited by 9 publications

References 24 publications

Material design and surface chemistry for advanced rechargeable zinc–air batteries

Material design and surface chemistry for advanced rechargeable zinc–air batteries

Highly active N‐doped non‐precious transition metal Fe@ N–C catalysts for efficient oxygen reduction reaction in microbial fuel cells

Nitrogen Plasma Modified Carbons for PEMFC with Increased Interaction with Catalyst and Ionomer

Contact Info

Product

Resources

About