In Situ and Operando X-ray Scattering Methods in Electrochemistry and Electrocatalysis

OM Magnussen, J Drnec, C Qiu, I Martens… - Chemical …, 2024 - ACS Publications
Electrochemical and electrocatalytic processes are of key importance for the transition to a
sustainable energy supply as well as for a wide variety of other technologically relevant …

Opportunities and challenges of strain engineering for advanced electrocatalyst design

QM Liang, X Wang, XW Wan, LX Lin, BJ Geng, ZQ Tian… - Nano Research, 2023 - Springer
Electrocatalysis is becoming more and more important in energy conversion and storage
due to rising energy demands, increasing carbon dioxide emissions, and impending climate …

Regulating and identifying the structures of PdAu alloys with splendid oxygen reduction activity for rechargeable zinc–air batteries

S Qiao, H Shou, W Xu, Y Cao, Y Zhou… - Energy & …, 2023 - pubs.rsc.org
Alloying improves catalytic performance, but the control is challenging due to element
contributions. Here, we study the structural differences in PdxAuy alloys to understand their …

Impact of carbon N-do** and pyridinic-N content on the fuel cell performance and durability of carbon-supported Pt nanoparticle catalysts

E Hornberger, T Merzdorf, H Schmies… - … Applied Materials & …, 2022 - ACS Publications
Cathode catalyst layers of proton exchange membrane fuel cells (PEMFCs) typically consist
of carbon-supported platinum catalysts with varying weight ratios of proton-conducting …

Break-in bad: On the conditioning of fuel cell nanoalloy catalysts

R Chattot, C Roiron, K Kumar, V Martin… - ACS …, 2022 - ACS Publications
Preliminary testing of fuel cell catalysts in a model laboratory environment is an essential
step in the technology readiness level progression of material candidates toward the …

Assessing utilization boundaries for pt-based catalysts in an operating proton-exchange membrane fuel cell

M Ronovsky, L Pan, M Klingenhof… - ACS Applied Energy …, 2023 - ACS Publications
Octahedra (oh) PtNiX/C catalysts are notable cathode catalysts for proton-exchange
membrane fuel cells due to their exceptional oxygen reduction reaction activity. Here, we …

Origins of Nanoalloy Catalysts Degradation during Membrane Electrode Assembly Fabrication

M Ronovský, O Dunseath, T Hrbek, P Kúš… - ACS Energy …, 2024 - ACS Publications
Despite extensive efforts to reduce the costs of high-performance electrochemical devices,
incorporating catalyst materials frequently falls short of achieving performance targets …

Operando nanoscale imaging of electrochemically induced strain in a locally polarized Pt grain

D Sheyfer, RG Mariano, T Kawaguchi, W Cha… - Nano Letters, 2022 - ACS Publications
Develo** new methods that reveal the structure of electrode materials under polarization
is key to constructing robust structure–property relationships. However, many existing …

Imaging the strain evolution of a platinum nanoparticle under electrochemical control

C Atlan, C Chatelier, I Martens, M Dupraz, A Viola… - Nature Materials, 2023 - nature.com
Surface strain is widely employed in gas phase catalysis and electrocatalysis to control the
binding energies of adsorbates on active sites. However, in situ or operando strain …

Corrosion of electrochemical energy materials: stability analyses beyond pourbaix diagrams

A Zagalskaya, P Chaudhary… - The Journal of Physical …, 2023 - ACS Publications
Since their first appearance, electrode potential/solution pH charts (Pourbaix diagrams)
have served as a general framework for the analysis of material corrosion in aqueous …