The observed topological vortex domains and the rotating magnetocaloric effect in the hexagonal RMnO (R = Ho, Er, and Yb) crystals.

Hexagonal RMnO (R = Er, Ho and Yb) single crystals were grown and their unique vortex domain structures, magnetic properties and magnetocaloric effect (MCE) were comprehensively investigated. The topological vortex domains/structures were clearly illustrated by polarized optical microscope and piezo response force microscopy, confirming a high quality of the crystals. The magnetic transitions related to R -Mn interactions and anisotropic properties were observed in the RMnO crystals.

Neuron-Inspired FeO/Conductive Carbon Filament Network for High-Speed and Stable Lithium Storage.

Construction of a continuous conductance network with high electron-transfer rate is extremely important for high-performance energy storage. Owing to the highly efficient mass transport and information transmission, neurons are exactly a perfect model for electron transport, inspiring us to design a neuron-like reaction network for high-performance lithium-ion batteries (LIBs) with FeO as an example. The reactive cores (FeO) are protected by carbon shells and linked by carbon filaments, constituting an integrated conductance network.

K Mn O /Reduced Graphene Oxide Nanocomposites for Excellent Lithium Storage and Adsorption of Lead Ions.

Ion diffusion efficiency at the solid-liquid interface is an important factor for energy storage and adsorption from aqueous solution. Although K Mn O (KMO) exhibits efficient ion diffusion and ion-exchange capacities, due to its high interlayer space of 0.70 nm, how to enhance its mass transfer performance is still an issue.