Journal ArticleDOI
LiNi1/3Co1/3Mn1/3O2–Graphene Composite as a Promising Cathode for Lithium-Ion Batteries
TLDR
The results indicate the better electrochemical performance of the LiNi(1/3)Co(1-1-3)Mn( 1/3-O(2)-graphene composite in terms of high discharge capacity, good rate capability, and good cycling performance compared to LiNi (1/2)Co (1-2-O)(2-2), which is attributed to a decrease in the charge-transfer resistance.Abstract:
The use of graphene as a conductive additive to enhance the discharge capacity and rate capability of LiNi1/3Co1/3Mn1/3O2 electrode material has been demonstrated. LiNi1/3Co1/3Mn1/3O2 and its composite with graphene (90:10 wt %) were prepared by microemulsion and ball-milling techniques, respectively. The structural and morphological features of the prepared materials were investigated with powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Characterization techniques depict single-phase LiNi1/3Co1/3Mn1/3O2 with particle sizes in the range of 220–280 nm. Electrochemical studies on LiNi1/3Co1/3Mn1/3O2 and LiNi1/3Co1/3Mn1/3O2–graphene were conducted using cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy methods by constructing a lithium half-cell. Cyclic voltammograms show the well-defined redox peaks corresponding to Ni2+/Ni4+. Charge–discharge tests were performed ...read more
Citations
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Graphene─inorganic nanocomposites
Song Bai,Xiaoping Shen +1 more
TL;DR: An overview of the synthesis and application of GN-inorganic nanocomposites is presented in this paper, where the challenges and perspective of these emerging nanocompositionites are also discussed.
Journal ArticleDOI
Graphene-based nanocomposites: Preparation, functionalization, and energy and environmental applications
TL;DR: Graphene, a two-dimensional carbon sheet with one atom thickness and one of the thinnest materials in universe, has inspired huge interest in physics, materials science, chemistry and biology.
Journal ArticleDOI
High-Performance Anode Materials for Rechargeable Lithium-Ion Batteries
TL;DR: In this article, the authors present the recent progresses and challenges in discovery of high-performance anode materials for Li-ion batteries related to their applications in future electrical vehicles and grid energy storage.
Journal ArticleDOI
Graphene-based nanocomposites for energy storage and conversion in lithium batteries, supercapacitors and fuel cells
TL;DR: In this paper, the authors summarize the recent advances in the synthesis and applications of graphene and its derivatives in the fields of energy storage (lithium ion, lithium air, lithium-sulphur batteries and supercapacitors) and conversion (oxygen reduction reaction for fuel cells).
Journal ArticleDOI
Graphene-Based Engine Oil Nanofluids for Tribological Applications
TL;DR: The improvement in FC, AW, and EP properties of nanofluids is respectively by 80, 33, and 40% compared with base oil and can be attributed to the nanobearing mechanism of graphene in engine oil and ultimate mechanical strength of graphene.
References
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Challenges for Rechargeable Li Batteries
John B. Goodenough,Youngsik Kim +1 more
TL;DR: In this paper, the authors reviewed the challenges for further development of Li rechargeable batteries for electric vehicles and proposed a nonflammable electrolyte with either a larger window between its lowest unoccupied molecular orbital and highest occupied molecular orbital (HOMO) or a constituent that can develop rapidly a solid/ electrolyte-interface (SEI) layer to prevent plating of Li on a carbon anode during a fast charge of the battery.
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Graphene-Based Ultracapacitors
TL;DR: CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here their performance in an ultracapacitor cell is demonstrated, illustrating the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.