Magnetism and Magnetic Transport Properties of the Polycrystalline Graphene Nanoribbon Heterojunctions Original Research Article Carbon, Available online 3 November 2015, Pages D. Wang, Z.H. Zhang, X.Q. Deng, Z.Q. Fan, G.P. Tang
Graphical abstractMagnetic transport properties of the polycrystalline graphene nanoribbons with a zigzag-armchair-zigzag structure are investigated systematically. It shows that grain boundaries (GBs) can induce significant localized electron states and magnetic ordering in the region consisting of GBs and armchair segment, and the interdomain electronic transmission across the GBs is transparent or blocked completely depending on the spin direction (α or β) of electrons and GB type (A or B), which causes a special spin polarization for the magnetic transport. Especially, the perfect spin-filtering, spin-rectifying, and giant magnetoresistance effects can be realized simultaneously in such heterojunctions.
| Synthesis of Sulfur Encapsulated 3D Graphene Sponge Driven by Micro-pump and its Application in Li-S Battery Original Research Article Journal of Materiomics, Available online 3 November 2015, Pages Qin Zhang, Shuangjie Tan, Xin Kong, Yao Xiao, Lei Fu
Graphical abstractWe synthesized 3D graphene sponge encapsulated sulfur composite (3D-GS@S) material for Li-S battery for the first time; highlight its unique oil-water two phase liquid seal system inspired from micro-pump, and good electrochemical stability as cathode for Li-S battery. With the sucking force from micro-pump, sulfur nanoparticles were drawn in and anchored on the inner face of 3D-GS. This well-designed structure remits the dissolution of polysulfides in cathode and improves the cycling of battery.
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