The HS state, and hence, the MII-type process, is stabilized with decrease in y, because the weaker ligand field from the octahedrally coordinated [Fe(CN)6] stabilizes the HS Co2+ configuration. This argument well explains why the MII-type reaction appears when the T is raised, or y is...
). As illustrated on the Pourbaix diagram (Fig. 5b), the slope of the Co2+/3+ redox was −117 mV pH−1, corresponding to a two-proton/one-electron transfer process (2H+/1e−). For the Co3+/4+ redox couple, the slope was −63 mV pH−1...
TEM Transmission electron microscopy NP Nanoparticle PCP Porous carbon polyhedron GO Graphene oxide ZIF Zeolitic imidazolate-framework NBGHSs N- and B-doped graphene hollow spheres N-csCNT-GNR Nitrogen-doped, core-shell structured carbon nanotube-graphene nanoribbon CCH Cobalt carbonate hydroxide OBA 4,...
The charge density difference diagram (Fig. S16) shows that the electron cloud on the LiO2, and Li2O2 is enriched toward the interface of Pd1-Co3O4−x, further indicating efficient electronic interaction, originating from the Pd atom and the oxygen vacancies active sites. The charge density...
FIG. 6 is a simplified diagram for an embodiment of a controller coupled to an electronic device, in which a dielectric layer has a cobalt titanium oxide film. FIG. 7 illustrates a diagram for an embodiment of an electronic system having devices with a dielectric film containing a cobalt tita...
:3dorbitalbyavalueof2.02eVwithalowspinconfigurationofCo 3þ (t 2g 6 e g 0 ).Theaveragemagneticsusceptibility($2Â10 À5 emucgsmol À1 )istemperature independent,inconformitywithitinerantelectronsbehavior.Thesampleisnominally non-stochiometricandtheconductivityfollowsathermallyactivatedhoppingoflattice ...
at Q = QAFM± (ϵ,± ϵ, 0) with QAFM = (H + 1/2, K + 1/2, L) being the wavevector of the unmodulated antiferromagnetic ↑ ↓ ↑ spin configuration. Here, we report on the observation of hour-glass spectra in the oxygen-doped cobaltate La2CoO4.20 that do not arise...
1. Scan- ning electron microscopy (SEM, Supplementary Fig. 2) shows that Co SA-NDGs possess a 3D interconnected porous archi- tecture with a highly wrinkled surface, delivering a Brunauer- Emmett-Teller (BET) surface area of 396.2 m2 g−1. The small mesopore centered at about 2–4 nm ...
Clean-energy technologies such as fuel cells and electrolyzers require even more active and stable electrocatalysts that accelerate the multi-proton/multi-electron-involved electrode reactions1,2. Previous studies have shown diverse approaches to boosting catalytic activity, such as chemical doping3,4, st...
Stable long-term cycling of high-energy-density yet sustainable SiOx|LiNi0.5Mn1.5O4batteries over 1,000 cycles was realized with 3.4 M LiFSI/FEMC electrolytes by optimizing the overall potential diagram of the full-cell. The solution structure of 3.4 M LiFSI/FEMC was distinct, with ...