English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Characterizing ion adsorption and diffusion in porous carbons is essential tounderstand the performance of such materials in a range of key technologiessuch as energy storage and capacitive deionisation. Nuclear Magnetic Resonance(NMR) spectroscopy is a powerful technique to get insights in these systemsthanks to its ability to distinguish between bulk and adsorbed species and toits sensitivity to dynamic phenomena. Nevertheless, a clear interpretation ofthe experimental results is sometimes rendered difficult by the various factorsaffecting NMR spectra. A mesoscopic model to predict NMR spectra of ionsdiffusing in carbon particles is adapted to include dynamic exchange betweenthe intra-particle space and the bulk electrolyte surrounding the particle. Asystematic study of the particle size effect on the NMR spectra for differentdistributions of magnetic environments in the porous carbons is conducted. Themodel demonstrates the importance of considering a range of magneticenvironments, instead of a single chemical shift value corresponding toadsorbed species, and of including a range of exchange rates (between in andout of the particle), instead of a single timescale, to predict realistic NMRspectra. Depending on the pore size distribution of the carbon particle and theratio between bulk and adsorbed species, both the NMR linewidth and peakpositions can be largely influenced by the particle size.

Investigating particle size effects on NMR spectra of ions diffusing in porous carbons through a mesoscopic model