Results 111 to 120 of about 670,113 (272)

A novel high specific capacity hybrid cathode for lithium fluorocarbon battery

open access: yesJournal of Aeronautical Materials, 2019
A novel high specific capacity hybrid cathode material was designed by increasing the specific capacity of cathode material to improve the discharge performance under large current. The carbon fluoride-sulfur hybrid material was prepared through grinding,
PENG Sikan   +3 more
doaj   +1 more source

Partially oxidized graphene as a precursor to graphene

open access: yesJournal of Materials Chemistry, 2011
Solution exfoliation of graphite holds promise for large-scale bulk synthesis of graphene. Non-covalent exfoliation is attractive because the electronic structure of graphene is preserved but the yield is low and the lateral dimensions of the sheets are small. Chemical exfoliation via formation of graphite oxide is a highly versatile and scalable route
EDA GOKI   +8 more
openaire   +3 more sources

Perfect proton selectivity in ion transport through two-dimensional crystals

open access: yesNature Communications, 2019
Defect-free monolayers of graphene and hexagonal boron nitride are highly permeable to thermal protons, but are impenetrable to gases. Here the authors show that mechanically exfoliated crystals exhibit perfect proton selectivity, corroborating proton ...
L. Mogg   +8 more
doaj   +1 more source

Drastic Minimization in the van der Waals Interaction with the Bottom Epitaxial Graphene Layer by the Diels-Alder Surface Chemistry of the Top Graphene Layer [PDF]

open access: yesarXiv, 2014
The Diels-Alder surface modified top epitaxial graphene layer, with newly created pair of sp3 carbon centres, results in abrupt minimization of interlayer van der Waals interactions between two stacked graphene planes, and escapes the wafer during post-reaction manipulation stage, leaving the layer under it almost pristine-like.
arxiv  

Application of solid polymer electrolyte in lithium sulfur batteries

open access: yesJournal of Aeronautical Materials, 2019
Polymer electrolyte coated sulfur@carbon fiber composite solid electrode was prepared by the two methods of microscopic and macroscopic coating with polymer electrolyte in the cathode sheet of lithium sulfur battery.
WANG Chen   +3 more
doaj   +1 more source

Microwave absorption performance and broadband absorption optimization of reduced graphene oxide

open access: yesCailiao gongcheng
The microwave absorption performances of different contents and superimposed layers of large sheet reduced graphene oxide (rGO) absorbers have been studied, and the rGO is obtained from the thermal reduction of graphene oxide by the improved Hummers ...
CHU Hairong   +3 more
doaj   +1 more source

Effect of surfactants on preparation of high concentration graphene aqueous dispersion

open access: yesCailiao gongcheng, 2019
The effects of surfactant structure and concentration on the preparation of high concent-ration graphene aqueous dispersion by HPH-LPE were systematically studied by UV-Vis spectra, TEM and laser granularity analyser. Three different types of surfactants
WANG Chen   +3 more
doaj   +1 more source

Dirac Material Graphene [PDF]

open access: yesarXiv, 2016
The paper presents the author view on spin-rooted properties of graphene supported by numerous experimental and calculation evidences. Dirac fermions of crystalline graphene and local spins of graphene molecules are suggested to meet a strict demand - different orbitals for different spins- which leads to a large spectrum of effects caused by spin ...
arxiv  

Ultrathin Epitaxial Graphite: 2D Electron Gas Properties and a Route toward Graphene-based Nanoelectronics [PDF]

open access: green, 2004
Claire Berger   +10 more
openalex   +1 more source

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