LingenfelderLAB

Spin-Polarized Electron Transport Promotes the Oxygen Reduction Reaction | ACS Nano pubs.acs.org/doi/10.1021/...

Quantifying the Reduction of OER Overpotential on Magnetic Electrocatalysts Under Magnetic Fields A universal analytical method is introduced to minimize uncontrolled mass transport in electrochemical systems under magnetic fields. By incorporating forced convection, it decouples magnetohydrodyna....

🚀 New #flow system using forced #convection to #quantify #magnetic field effects on #catalytic activity! 🍐=🍐, 🍎=🍎 🧲
Fe > Mn ≈ Co >> Ni in OER response.
A universal framework to decouple transport vs. kinetics in #electrocatalysis.
🔗 onlinelibrary.wiley.com/doi/10.1002/...

Congrats to all our GRC poster prizes! You did an amazing job!

Happy 734th Birthday, Switzerland! 🇨🇭🇨🇭
Having brunch on the farm with the amazing products of our farmers is a perfect way to celebrate!
Longue vie aux paysannes et paysans ! 🧑‍🌾👩‍🌾

La Facultad de Química celebra sus 50 años con el congreso ‘Donostia is Science’, que se ha inaugurado esta mañana y que reúne a cerca de 150 investigadores que trabajan en áreas de conocimiento relacionadas con la química en los centros de investigación del territorio.  https://bit.ly/4jphp0G

#NANOGUNECOLLOQUIUM
📆 28 MAY 2025, 4 pm
👉 From Nano to Quantum: Spin-Selective Catalysts for Clean Energy Technologies
🗣️ Magali Lingenfelder, Helvetia Institute for Science and Innovation, Switzerland

@lingenfelderlab.bsky.social making the point to investigate the active sites of catalysts under reaction conditions 🧐 50a chemistry @upvehu.bsky.social, dipc.ehu.eus/en/scientifi...
See also the colloquium @nanogune.bsky.social yesterday 😁

chemistry faculty UPV/EHU

May 28+29+30: conference "Donostia is Science", 50 years faculty of chemistry (nkd.in/dH_g33jQ) @upvehu.bsky.social :

donostiascience.dipc.org

@nanogune.bsky.social presents a key note by Nacho Pascual and a plenary talk by @lingenfelderlab.bsky.social to our nice neighbours in "Ibaeta Valley"!

#Sunset in #Leuven 😍

Looking forward to meeting you all this summer for the biggest #CISS event of the year! Hurry up 🏃🏻‍♀️‍➡️🏃🏻‍♀️‍➡️ 🏃🏽‍♀️‍➡️and join us! 🦔🌀🐚✨

#spin #energy #materials #quantumelectrocat #quantumbio #chirality and more!

www.grc.org/electron-spi...

Chiral NiFe oxydes are surprisingly stable in full cell electrolyser architectures at industrially relevant current densities! A huge step towards incorporating chiral induced spin selectively #CISS electrodes into industrial electrolysers!

An image showing two stylised circular dichroism spectra on the left-hand side and two stylised chiral electrocatalyst surfaces on the right-hand side with the oxygen evolution reaction depicted as a rainbow. The Chemical Science "Pick of the Week" logo is displayed centrally.

Check out this week's #ChemSciPicks by Felipe A. Garcés-Pineda, J. R. Galan-Mascaros, et al. on spin-polarised transport through chiral electrocatalysts! #ChemSky #ChemSci

Read it here for free: doi.org/10.1039/D4SC...

Felicidades María! Muy merecido reconocimiento 👏🏻👏🏻👏🏻👏🏻🥳🥳🥳🥳

Thank you María! 🤗

It’s always a challenge to push boundaries and think outside the “conventional” box. Thanks to the hard work and determination of everyone involved that made this work possible! 👏 🌿 #STM #OER #NiFeOx #Operando #Nanoscience

This work took years of effort and perseverance, especially since, a few years back, some referees doubted this was even possible.

Big congrats goes to Yunchang for persevering on these super challenging experiments! But STM alone isn’t enough—“seeing is believing,” but understanding chemical composition requires spectroscopic techniques. That’s where XPS and STEM-EDS came in.

Fe incorporates at the edges and cluster on the surface. The resulting dual Ni-Fe active sites were tracked by noise EC-STM on samples prepared in @xilehu-epfl.bsky.social Lab. This is probably the most complex material analyzed so far with nEC-STM.

• Fe incorporation works at multiple levels: increasing the electrochemically active surface area by fragmentation, favouring the formation of NiOOH, and forming dual active sites. Fe further fragments the islands, incorporating at the edges and clustering on the surface.

• Hydroxylation triggers fragmentation: Sofia observed this already under UHV by exposing NiOx islands to water vapor, while Yunchang quantified the fragmentation as soon as the catalyst was immersed in the electrolyte.

What surprised me the most? The “activation” step is actually a fragmentation step that increases surface area—boosting activity in the process, likely a mechanism shared by many 2D transition metal oxides.

We show how 2D NiFeOx (a prototypical material for oxygen evolution from water) works during the reaction. The step by step approach we took in collaboration with our friends from @ecijalab.bsky.social group shed light on the “activation” protocols commonly used in catalysis.

Happy to share our first paper of 2025, coming up soon in Angewandte Chemie!

lnkd.in/dGHW42td

Measuring oxides with STM is notoriously tricky, but the stunning images captured by Sofia (under UHV) and Yunchang (under electrolyte) are worth the effort—and I'm sure you’ll love them too! 😻

😂

I’m curious why you guys use so many scales 😅

Thank you for creating this! Really useful ☺️. I added everyone ❤️

Hello 🦋 world! Looking for my friends in #chemsky #nanosky #interfaces #chirality 💫

We just found 10 surface scientists @🦋 #SciSky 🎉 Help us find more! #UHV #STM #XPS #UPS #ARPES #AFM #ChemPhys #PhySky #ChemSky #SurfSci #SurfaceScience
go.bsky.app/LKyQJm7