Mechanochemical one-pot synthesis of heterostructured pentlandite-carbon composites for the hydrogen evolution reaction

Tetzlaff, David; Rensch, Tilo; Messing, Leonard; Banke, Petra; Grätz, Sven; Siegmund, Daniel; Borchardt, Lars; Apfel, Ulf-Peter

doi:10.1039/d3sc04542k

Cited by 4 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 6 , 7 , 8 ] Therefore, it is of paramount significance to seek efficient, low‐cost metal catalysts as alternatives to precious metal catalysts for water electrolysis. [ 9 , 10 , 11 ]…”

Section: Introductionmentioning

confidence: 99%

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Jiang,

Zhao,

et al. 2023

Advanced Science

View full text Add to dashboard Cite

The design of catalysts with tunable active sites in heterogeneous interface structures is crucial for addressing challenges in the water‐splitting process. Herein, a hollow spherical heterostructure FeCo‐P is successfully prepared by hydrothermal and phosphorization methods. This hollow structure, along with the heterogeneous interface between Co2P and FeP, not only facilitates the exposure of more active sites, but also increases the contact area between the catalyst and the electrolyte, as well as shortens the distance for mass/electron transfer. This enhancement promotes electron transfer to facilitate water decomposition. FeCo‐P exhibits excellent hydrogen evolution (HER) and oxygen evolution (OER) performance when reaching @ 10 mA cm−2 in 1 mol L−1 KOH, with overpotentials of 131/240 mV for HER/OER. Furthermore, when FeCo‐P is used as both the cathode and anode for overall water splitting (OWS), it only requires low voltages of 1.49, 1.55, and 1.57 V to achieve CDs of 10, 100, and 300 mA cm−2, respectively. Density functional theory calculations indicate that constructing a Co2P and FeP heterogeneous interface with good lattice matching can facilitate electron redistribution, thereby enhancing the electrocatalytic performance of OWS. This work opens up new possibilities for the rational design of efficient water electrolysis catalysts derived from MOFs.

show abstract

“…[ 6 , 7 , 8 ] Therefore, it is of paramount significance to seek efficient, low‐cost metal catalysts as alternatives to precious metal catalysts for water electrolysis. [ 9 , 10 , 11 ]…”

Section: Introductionmentioning

confidence: 99%

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Jiang,

Zhao,

et al. 2023

Advanced Science

View full text Add to dashboard Cite

show abstract

Carbon Bipolar Plates in PEM Water Electrolysis: Bust or Must?

Messing,

Pellumbi,

Hoof

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

Reducing the cost of PEM water electrolyzers is crucial for making green hydrogen economically viable achievable by cheaper catalysts as well as bipolar plates. This study demonstrates for the first time the use of uncoated carbon bipolar plates (C‐BPs) as an alternative to titanium bipolar plates (Ti‐BPs). The corrosion phenomena of C‐BPs versus Ti‐BPs are investigated through ex situ and in situ accelerated stress tests. The findings show that pH values, especially between 1 and 0, exponentially influence the corrosion current density of bipolar plates. Ex situ tests revealed significantly higher corrosion current densities for C‐BPs compared to Ti‐BPs (e.g., 170 times higher at pH 1 and 80 °C). Yet, tests applying C‐BPs in a Proton Exchange Membrane Electrolyzer operated for at least 567 h at alternating current densities of 1 and 3 A cm⁻2 with low degradation rates (16.41 µV h⁻¹ at 1 A cm⁻2 and 31.92 µV h⁻¹ at 3 A cm⁻2), comparable to Ti‐BPs. Contrary to general perceptions, C‐BPs are stable under application‐ready conditions and do not corrode as previously expected. This study highlights the potential of C‐BPs in electrolyzers, showcasing the potential to reduce the costs of the electrolyzers.

show abstract

Titanium dioxide supported low-loading platinum as efficient and durable electrocatalyst for acidic hydrogen evolution reaction

Wang,

Zhang,

et al. 2024

Molecular Catalysis

View full text Add to dashboard Cite

Mechanochemical one-pot synthesis of heterostructured pentlandite-carbon composites for the hydrogen evolution reaction

Abstract: We have utilized carbon sources as milling additives to enable a direct mechanochemical one-pot synthesis of Fe3Co3Ni3S8/carbon (Pn/C) materials using elemental reaction mixtures. The obtained Pn/C materials are thoroughly characterized...

Cited by 4 publications

References 37 publications

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Hollow Spherical Heterostructured FeCo‐P Catalysts Derived from MOF‐74 for Efficient Overall Water Splitting

Carbon Bipolar Plates in PEM Water Electrolysis: Bust or Must?

Titanium dioxide supported low-loading platinum as efficient and durable electrocatalyst for acidic hydrogen evolution reaction

Contact Info

Product

Resources

About