Noël Hallemans

Noël Hallemans
University of Oxford

Date: January 21, 2026
Time: 1000–1100h ET

Electrochemical impedance spectroscopy (EIS) offers rich insights into the physical processes within batteries—but how can these measurements directly inform physics-based models? Recent work presented in this webinar demonstrates how impedance data can be used to extract grouped parameters for physics-based models such as the Doyle-Fuller-Newman (DFN) model or the reduced-order single particle model with electrolyte (SPMe). (more…)

Jeff Dahn

The ECS Detroit Section invites you to “LFP Li-ion cells are boring – Why should I care?” presented by Jeff Dahn on January 13 at Nissan Technical Center North America.

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ECS Advances is pleased to highlight a recent article that makes an important contribution to the understanding of high-temperature electrochemical processes: “Evaluating Platinum, Gold, Glassy Carbon, and Graphite Anodes for Chlorine Evolution in Molten Calcium Chloride Salt.” Authored by Cameron Vann, Shelssie Klvacek, Carlos Mejia,  and Devin Rappleye, this work provides timely and practical insights into materials selection for chlorine evolution under extreme conditions.

The chlorine evolution reaction (CER) in molten calcium chloride (CaCl₂) carries several critical technologies, including chlorination, metal refining, rare earth processing, and the treatment and purification of used nuclear fuel. Despite its importance, long-term anode stability and performance in molten salt environments remain persistent challenges. This study directly addresses those challenges through a systematic comparison of four commonly considered anode materials: platinum, gold, glassy carbon, and graphite. (more…)

Volatile fatty acids (VFAs) from biomass fermentation offer a sustainable alternative to petroleum-based chemicals, serving as building blocks for bioplastics, pharmaceuticals, and more. However, separating and purifying these acids from fermentation broths remains technically challenging.

A new study in the Journal of The Electrochemical Society, selected as an Editors’ Choice article, addresses this bottleneck. Researchers Riccardo Candeago, Nidhish Lella, Wangsuk Oh, Ping Liu, and Xiao Su developed a physics-based model of redox-mediated (more…)

Today’s guest post comes from Lutz Stratmann, Senior Electrochemist, and Richard Newell, Marketing Specialist and Technical Writer, of ECS Institutional Partner PalmSens BV, who share their perspective on advancing research, collaboration, and innovation in our scientific community.

In developing the EmStat4T—our latest battery-powered potentiostat with a touchscreen and QR code reader—we wanted users to be able to make it truly their own. Customization often means writing scripts, but coding can be a major hurdle for many researchers. Our goal was clear: make scripting easier without sacrificing flexibility. (more…)

We are pleased to spotlight a publication from the ECS Journal of Solid State Science and Technology (JSS):

“Low-Damage Atomic Layer Etching for Contact Resistance Reduction in Millimeter Wave AlGaN/GaN HEMTs on Si” (DOI: 10.1149/2162-8777/ae1ced) by Hsuan-Yao Huang et al. (2025) —available fully open access.

In this work, the authors address one of the key bottlenecks for high-frequency GaN electronics: ohmic contact resistance and accompanying device damage in high-electron-mobility transistors (HEMTs) built on Si substrates. Conventional etching methods for the ohmic-recess process often introduce plasma-induced damage, rough surfaces, and degraded channel performance. (more…)