3D CuO@nitrogen-graphene aerogel hybrids as anodes for lithium-ion batteries: Gas-liquid interfacial assembly and superior electrochemical performance

Feng, Cui Ning; Dong, Lu; Meng, Jing; Zheng, Xiu Cheng; Zheng, Guang

doi:10.1016/j.jallcom.2019.01.119

Cited by 14 publications

(3 citation statements)

References 43 publications

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“…The FTIR spectra were applied to further investigate the phase classification of the obtained composites. As seen in Figure 2c, the peaks located at ∼498 and ∼601 cm −1 correspond to the stretching vibrations of Cu−O, 28,29 further revealing the successful hybrid of CRGO and CCO nanosheets. A thermogravimetry (TG) curve was performed to determine the content of CRGO in the composite.…”

Section: Resultsmentioning

confidence: 85%

Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

et al. 2021

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Copper oxide is considered as a potential anode material for lithium-ion batteries (LIBs), which have attracted huge amounts of research ardor owning to the high capacity and ultrahigh theoretical capacity, twice that of a graphite anode. However, the practical application of the copper oxide anodes is hindered by their inherent properties, including low conductivity and huge volume variation of active materials during the lithiation reaction. Consequently, a novel CuO/Cu 2 O/coal-based reduced graphene oxide nanosheet composite (CCO/CRGO) with porous structure and conductive network was constructed via a mild solvothermal self-assembly method. Thanks to the unique structure, which facilitates the electronic transference and ion diffusion while also easing the volume expansion of copper oxides, the obtained CCO/CRGO anode exhibits a higher reversible capacity of 586 mAh g −1 at 1 A g −1 with impressive stability, and the capacity restored to 767 mAh g −1 when the current density reduced to 0.1 A g −1 . Electrochemical kinetic analysis of CCO/CRGO indicates that the capacitive contribution is the most of the capacity stems, which can improve the rate performance of the CCO/CRGO electrode. Considering the desirable electrochemical performance and the simple synthesis route, CCO/CRGO may be a candidate when used as an anode material for high-rate LIBs.

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Section: Resultsmentioning

confidence: 85%

Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

et al. 2021

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“…Feng et al obtained three-dimensional (3D) Cu@nitrogen-graphene aerogel hybrids, which show a first discharge-specific capacity of 1442.2 mAh/g at 100 mA/g. In this work, the interconnected porous structure was used to build a powerful backbone for an electrochemically active material . Therefore, it follows then that the hybrid structure leads to the internal self-built electric field of the electrode interface by coordinating between multiple electrochemical components, which can effectively reduce the reaction energy and increase the surface reaction kinetics .…”

Section: Introductionmentioning

confidence: 99%

“…In this work, the interconnected porous structure was used to build a powerful backbone for an electrochemically active material. 19 Therefore, it follows then that the hybrid structure leads to the internal self-built electric field of the electrode interface by coordinating between multiple electrochemical components, which can effectively reduce the reaction energy and increase the surface reaction kinetics. 20 Despite the CuO-based anode and CuO-graphene composite materials having been accepted and effectively buffering the strain from the pulverization of the active CuO and preserving the rapid electron transfer speed, 21 the exposed active CuO on the graphene surface is still prone to disintegrate or break down.…”

Section: Introductionmentioning

confidence: 99%

Rapid Oxidation Synthesis of Hollow Cupric Oxide-Decorated rGO with High Performance and Kinetically Enhanced Lithium Storage

Zheng

Zhao

et al. 2022

Energy Fuels

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From the perspective of promotion of metal oxide anodes' performance, structural design and reinforcement of carbon materials are always concerned as useful methods. In addition, high hope is being placed on the use of graphene as an ideal potential carbon reinforcement material for an abundant energy market, but currently, commercial graphene has poor intrinsic properties, which hamper its development in the energy storage area. Therefore, combining the metal oxide materials with commercial graphene by a rational structure design could be a more hopeful method to realize the productive use of commercial graphene in the energy storage area. In this work, hollow cupric oxide (CuO) decorated on reduced graphene oxide (rGO) is prepared by an effective glycol−water combined rapid oxidation strategy. The well-designed composite yields a high initial capacity of 1491 mAh/g and maintains 960 mAh/g after 500 cycles at 1.0 A/g. The remarkable reversible capacity may be attributed not only to the hollow structure of CuO, but also to the bidirectional synergy between graphene and the small-sized CuO. The galvanostatic intermittent titration technique (GITT) and density functional theory (DFT) calculation are conducted to analyze the relationship between the electrochemical properties and surface states. The GITT test shows that the ion diffusion coefficient is higher when the smaller hollow CuO is decorated on rGO. Additionally, the DFT results indicate that more active electrons appear on the surface of the composite. As a result, the as-prepared hollow and smaller CuO-decorated rGO presents excellent performance in terms of specific capacity and rate capability.

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Porous Graphene‐Based Aerogels for Batteries

Hasanpour,

Hatami

2024

Aerogels for Energy Saving and Storage

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3D CuO@nitrogen-graphene aerogel hybrids as anodes for lithium-ion batteries: Gas-liquid interfacial assembly and superior electrochemical performance

Cited by 14 publications

References 43 publications

Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

Rapid Oxidation Synthesis of Hollow Cupric Oxide-Decorated rGO with High Performance and Kinetically Enhanced Lithium Storage

Porous Graphene‐Based Aerogels for Batteries

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3D CuO@nitrogen-graphene aerogel hybrids as anodes for lithium-ion batteries: Gas-liquid interfacial assembly and superior electrochemical performance

Cited by 14 publications

References 43 publications

Facile Self-Assembly Solvothermal Preparation of CuO/Cu2O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

Facile Self-Assembly Solvothermal Preparation of CuO/Cu2O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

Rapid Oxidation Synthesis of Hollow Cupric Oxide-Decorated rGO with High Performance and Kinetically Enhanced Lithium Storage

Porous Graphene‐Based Aerogels for Batteries

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Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries

Facile Self-Assembly Solvothermal Preparation of CuO/Cu₂O/Coal-Based Reduced Graphene Oxide Nanosheet Composites as an Anode for High-Performance Lithium-Ion Batteries