ArticleNano letters2024
Simultaneous Mapping of Electrocatalytic Activity and Selectivity via Hybrid Scanning Electrochemical Probe Microscopy.
Article in Nano letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Scanning Photoelectrochemical (Cell) Microscopy forChemical & biomedical imaging · 2026Review
- Quantitative Electroanalysis in Ionic Liquids Using Scanning Electrochemical Cell Microscopy.Analytical chemistry · 2026Article
- Fingerprint Recognition Based on Molecular-Scale Conductance Response via Electrochemically Gated Quantum Tunnelling.Sensors (Basel, Switzerland) · 2026Article
- Polarization-Tunable Photoelectrochemistry at Individual Anisotropic ReSThe journal of physical chemistry letters · 2026Article
- Thin-Wall Single-Crystal Gold Nanoelectrodes toward Advanced Chemical Probing and Imaging.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Mobile Protein Microboxes on Optical Fibers for Spatial Micromanipulation of Bacterial Microcolonies.Analytical chemistry · 2026Article
- A Look inside a Flexible Open-Source Scanning Electrochemical Probe Microscope.ACS electrochemistry · 2026Article
- Surface interrogation of advanced electrocatalysts by scanning electrochemical microscopy: fundamentals, progress and perspectives.Chemical science · 2025Review
- Scanning Electrochemical Cell Microscopy for Sub-Micrometer Mass Spectrometric Studies of Electrochemical Reactions.ACS electrochemistry · 2025Article
- Investigation of Noise at a Microelectrode during a Faradaic Reaction.ACS electrochemistry · 2025Article
- Electrochemical correlative microscopy: Discovering insights into structure-reactivity relationships for electrochemical energy conversion and storage.Current opinion in electrochemistry · 2025Article
- Gas-Liquid-Solid Three-Phase Boundary in Scanning Electrochemical Cell Microscopy.ACS measurement science au · 2024Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
Nanoscale scanning electrochemical probe microscopy started to elucidate the heterogeneity of electrocatalytic activity at electrode surfaces. However, understanding the heterogeneity in product selectivity, another crucial aspect of interfacial reactivity, remains challenging. Herein, we introduce a method combining scanning electrochemical microscopy (SECM) and scanning electrochemical cell microscopy (SECCM) to enable the spatially resolved mapping of both activity and selectivity in electrocatalysis. A dual-channel nanopipette probe was developed: one channel for activity mapping and the other for product detection with a high collection efficiency (>95%) and sensitivity. Simultaneous mapping of activity and selectivity in the oxygen reduction reaction (ORR) is demonstrated. Combined with colocalized crystal orientation mapping, we uncover the local electrocatalytic performance of ORR at different facets on polycrystalline Pt and Au. The high-resolution selectivity mapping enabled by our method with colocalized structural characterization can provide structure-activity-selectivity relationships that are often unavailable in ensemble measurement, holding promise for understanding key structural motifs controlling interfacial reactivity.
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