Learning heterogeneous reaction kinetics from X-ray videos pixel by pixel.

ABSTRACT: Reaction rates at spatially heterogeneous, unstable interfaces are notoriously difficult to quantify, yet are essential in engineering many chemical systems, such as batteries¹ and electrocatalysts². Experimental characterizations of such materials by operando microscopy produce rich image datasets^3-6, but data-driven methods to learn physics from these images are still lacking because of the complex coupling of reaction kinetics, surface chemistry and phase separation⁷. Here we show that heterogeneous reaction kinetics can be learned from in situ scanning transmission X-ray microscopy (STXM) images of carbon-coated lithium iron phosphate (LFP) nanoparticles. Combining a large dataset of STXM images with a thermodynamically consistent electrochem

SUBMITTER: Zhao H 

PROVIDER: S-EPMC10499602 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature