Rational design of 3D N-doped carbon nanosheet framework encapsulated ultrafine ZnO nanocrystals as superior performance anode materials in lithium ion batteries

Li, Jianding; Zhao, Huajun; Wang, Meimei; Zhu, Yongyang; Li, Bo; Yu, Xueqing; Xu, Jincheng; Cheng, Ya‐Jun; Ouyang, Liuzhang; Shao, Huaiyu

doi:10.1039/c9ta08377d

Cited by 47 publications

(29 citation statements)

References 67 publications

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“…2c) can be identified as C−C and C−O, respectively. 37,38 The Ni 2p spectrum is fitted well with one major spin−orbit doublet, located at 856.4 and 874.6 eV, which indicated the existence of Ni 2+ (Figure 2d). 39 The fitting peaks at binding energies of 781.1 and 797.3 eV in Co 2p spectra can be assigned to Co 2+ (Figure 2e).…”

Section: Methodsmentioning

confidence: 82%

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Zhou

Cao

et al. 2021

ACS Appl. Mater. Interfaces

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The rapidly developing wearable flexible electronics makes the development of high-performance flexible energy storage devices, such as all-solid-state supercapacitors (SCs), particularly important. Herein, we report the fabrication of CNTs/NiCoSe 2 hybrid films on carbon cloth (CC) through a facile co-electrodeposition method based on flexible electrodes for all-solid-state SCs. The NiCoSe 2 sheets grown on CNTs uniformly with a diameter of 50−100 nm act as the active materials. The CNTs in the hybrid films act as the scaffold to offer more deposition sites for NiCoSe 2 and provide a conductive network to facilitate the transfer of electrons. Moreover, the one-step electrodeposition process avoids the usage of any organic binders. Benefiting from the high intrinsic reactivity and unique 3D architecture, the obtained CNTs/NiCoSe 2 electrode delivers high specific capacity (218.1 mA h g −1 ) and satisfactory durability (over 5000 cycles). Remarkably, the CNTs/NiCoSe 2 //AC flexible all-solid-state (FASS) ASC provides remarkable energy density (112.2 W h kg −1 ) within 0−1.7 V and maintains 98.1% of its initial capacity after 10,000 cycles. In addition, this flexible ASC device could be fabricated at a large scale (5 × 6 cm 2 ), and the LED arrays (>3.7 V) can be easily lighted up by three ASCs in series, showing its potential practical application.

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Section: Methodsmentioning

confidence: 82%

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Zhou

Cao

et al. 2021

ACS Appl. Mater. Interfaces

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“…[ 33 ] Subsequently, multiple anodic peaks below 1 V can be observed, which are ascribed to the multistep dealloying reactions and the reformation of Zn. [ 34 ] Moreover, the broad peak near 1.3 V is related to the reoxidation of Zn. As for the hybrid (ZnO/ZFO‐10), a new cathodic peak obviously differs from the ZnO anode centered at ≈1.37 V (vs Li/Li + ), which mainly corresponds to the intercalation of Li into ZFO (Li x ZnFe 2 O 4 ).…”

Section: Resultsmentioning

confidence: 99%

Designing Hierarchical Porous ZnO/ZnFe₂O₄ Hybrid Nanofibers with Robust Core/Shell Heterostructure as Competitive Anodes for Efficient Lithium Storage

Zhang

Bao

et al. 2020

Energy Tech

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Hierarchical hybrid heteroarchitectures possess attractive structural/compositional merits for lithium‐ion batteries (LIBs). Herein, a facile yet in situ growth strategy is proposed to scalably synthesize hierarchical porous ZnO/ZnFe2O4 hybrid nanofibers (NFs) with robust core/shell heterostructure toward LIBs. In such hybrids, 2D ZnFe2O4 nanosheets (NSs) are uniformly decorated on single‐crystalline ZnO core NFs, thereby affording more exposed active sites, a fast ion diffusion kinetic, and structural stability of electrodes during repeated cycling. As a result, benefiting from the unique hierarchical porous core/shell architecture and synergistic effects between the stable substrate of ZnO NFs and high‐capacity promoter of ZnFe2O4 NSs, the optimized ZnO/ZnFe2O4 hybrid as an anode for LIBs delivers a large reversible capacity of ≈688 mAh g−1 at 0.1 A g−1, high rate capability (≈288 mAh g−1 at 2.0 A g−1), and remarkable cyclability (≈491 mAh g−1 even over 250 cycles at 0.5 A g−1) for efficient lithium storage. This work highlights the rational design of a hierarchical architecture with a stable substrate and high‐capacity phases for next‐generation energy storage applications.

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“…[1][2][3][4] In search of clean and renewable energy, considerable attempts have been made, and even several countries have issued the deadlines for phasing out fossil fuel-based vehicles. Presently, renewable energy devices, such as rechargeable cells, [5][6][7][8][9][10][11][12][13][14][15][16][17] fuel cells, [18][19][20][21][22][23][24][25][26][27] and solar cells [28][29][30][31][32] have attracted widespread attention. Among them, lithium-ion batteries have been the dominant power sources…”

Section: Introductionmentioning

confidence: 99%

Silicon‐Based Lithium Ion Battery Systems: State‐of‐the‐Art from Half and Full Cell Viewpoint

Guo

Dong

Wang

et al. 2021

Adv Funct Materials

Self Cite

107

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Lithium‐ion batteries (LIBs) have been occupying the dominant position in energy storage devices. Over the past 30 years, silicon (Si)‐based materials are the most promising alternatives for graphite as LIB anodes due to their high theoretical capacities and low operating voltages. Nevertheless, their extensive volume changes in battery operation causes the structural collapse of Si‐based electrodes, as well as severe side reactions. In this review, the preparation methods and structure optimizations of Si‐based materials are highlighted, as well as their applications in half and full cells. Meanwhile, the developments of promising electrolytes, binders and separators that match Si‐based electrodes in half and full cells have made great progress. Pre‐lithiation technology has been introduced to compensate for irreversible Li+ consumption during battery operation, thereby improving the energy densities and lifetime of Si‐based full cells. More importantly, almost all related mechanisms of Si‐based electrodes in half and full cells are summarized in detail. It is expected to provide a comprehensive insight on how to develop high‐performance Si‐based full cells. The work can help us understand what happens during the lithiation process, the primary causes of Si‐based half and full cells failure, and strategies to overcome these challenges.

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Rational design of 3D N-doped carbon nanosheet framework encapsulated ultrafine ZnO nanocrystals as superior performance anode materials in lithium ion batteries

Abstract: A ZnO encapsulated in a 3D NCNF composite exhibits excellent electrochemical performances both in a half cell and full cell. The improved performances are mainly explained based on the two aspects of structural integrity and kinetics enhancement.

Cited by 47 publications

References 67 publications

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Designing Hierarchical Porous ZnO/ZnFe₂O₄ Hybrid Nanofibers with Robust Core/Shell Heterostructure as Competitive Anodes for Efficient Lithium Storage

Silicon‐Based Lithium Ion Battery Systems: State‐of‐the‐Art from Half and Full Cell Viewpoint

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Rational design of 3D N-doped carbon nanosheet framework encapsulated ultrafine ZnO nanocrystals as superior performance anode materials in lithium ion batteries

Abstract: A ZnO encapsulated in a 3D NCNF composite exhibits excellent electrochemical performances both in a half cell and full cell. The improved performances are mainly explained based on the two aspects of structural integrity and kinetics enhancement.

Cited by 47 publications

References 67 publications

Scalable CNTs/NiCoSe2 Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Scalable CNTs/NiCoSe2 Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Designing Hierarchical Porous ZnO/ZnFe2O4 Hybrid Nanofibers with Robust Core/Shell Heterostructure as Competitive Anodes for Efficient Lithium Storage

Silicon‐Based Lithium Ion Battery Systems: State‐of‐the‐Art from Half and Full Cell Viewpoint

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Product

Resources

About

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Scalable CNTs/NiCoSe₂ Hybrid Films for Flexible All-Solid-State Asymmetric Supercapacitors

Designing Hierarchical Porous ZnO/ZnFe₂O₄ Hybrid Nanofibers with Robust Core/Shell Heterostructure as Competitive Anodes for Efficient Lithium Storage