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Graphene-Modified Porous NiO/C Composites as Anode Materials for Li-Ion Batteries

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Graphene has excellent conductivity and can thus serve as an electrical conductivity network. In this study, graphene-modified core–shell NiO/C composites were successfully synthesized. The connections among NiO/C particles were enhanced by shock cooling the link of each porous NiO/C particle. SEM and TEM images were obtained, which showed that the resulting core–shell NiO/C composites were rolled in graphene and evenly distributed. As anode material for Li-ion batteries, the discharge capacity for the 100th cycle is maintained at 637.6 mAh g−1. When the increase in current density increases was constant, the discharge capacity did not plummet, and the cycle was stable. When the current density increased to 800 mA g−1 ad then decreased to 100 mA g−1, the discharge capacity increased to 623.1 mAh g−1, which reflects an outstanding rate performance.
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Keywords: Graphene Roll; Li-Ion Batteries; NiO/C Composites; Thermodilatometry

Document Type: Research Article

Affiliations: 1: School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, P. R. China 2: State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources, Kunming, 650031, PR China

Publication date: April 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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