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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Significance We present a systematic study of a family of 15 types of octahedral spinel electrocatalysts for the oxygen reduction reaction (ORR) in alkaline fuel cells. Three specific candidates, MnCo2 O4 /C, CoMn2 O4 /C, and CoFe2 O4 /C, exhibited very promising ORR activity. In particular, CoMn2 O4 /C could rival the ORR activity and selectivity of Pt/C. Such performance was ascribed to a partial charge transfer between Co and Mn. The most active, MnCo2 O4 /C, exhibited a unique Co–Mn core–shell structure with heterogeneous valence states, which were probed at the single-nanoparticle level using scanning transmission and high-energy-resolution electron-loss near-edge structure. We believe that our approach, of combining advanced electron microscopy and spectroscopy, will enable the design of highly active nanocatalysts with unprecedented atomic-scale precision.

Octahedral spinel electrocatalysts for alkaline fuel cells