Peter Ercius

Jul 7, 2024 | nature.com | Yao Yang |Jihan Zhou |Zipeng Zhao |Geng Sun |Saman Moniri |Colin Ophus | +9 more

AbstractHeterogeneous nanocatalysts play a crucial role in both the chemical and energy industries. Despite substantial advancements in theoretical, computational and experimental studies, identifying their active sites remains a major challenge. Here we utilize atomic electron tomography to determine the three-dimensional atomic structure of PtNi and Mo-doped PtNi nanocatalysts for the electrochemical oxygen reduction reaction.

Jun 19, 2024 | nature.com | QiuBo Zhang |Zhigang Song |Xianhu Sun |Qi Zheng |Junyi Shangguan |Karen C. Bustillo | +3 more

AbstractElectrified solid–liquid interfaces (ESLIs) play a key role in various electrochemical processes relevant to energy1,2,3,4,5, biology6 and geochemistry7. The electron and mass transport at the electrified interfaces may result in structural modifications that markedly influence the reaction pathways. For example, electrocatalyst surface restructuring during reactions can substantially affect the catalysis mechanisms and reaction products1,2,3.

Dec 20, 2023 | nature.com | Saman Moniri |Yao Yang |Jun Ding |Long Yang |Liangbing Hu |Peter Ercius

AbstractMedium- and high-entropy alloys (M/HEAs) mix several principal elements with near-equiatomic composition and represent a model-shift strategy for designing previously unknown materials in metallurgy1,2,3,4,5,6,7,8, catalysis9,10,11,12,13,14 and other fields15,16,17,18. One of the core hypotheses of M/HEAs is lattice distortion5,19,20, which has been investigated by different numerical and experimental techniques21,22,23,24,25,26.

May 31, 2023 | nature.com | ChangHwan Lee |Emma Z. Xu |Yawei Liu |Hye Sun Park |Natalie Fardian-Melamed |Jongwoo Kim | +6 more

AbstractMaterials whose luminescence can be switched by optical stimulation drive technologies ranging from superresolution imaging1,2,3,4, nanophotonics5, and optical data storage6,7, to targeted pharmacology, optogenetics, and chemical reactivity8. These photoswitchable probes, including organic fluorophores and proteins, can be prone to photodegradation and often operate in the ultraviolet or visible spectral regions.