Two-dimensional porous Co<sub>3</sub>O<sub>4</sub>nanosheets for high-performance lithium ion batteries

Li, Li; Jiang, Gaoxue; Sun, Runzhi; Cao, Bingqiang

doi:10.1039/c7nj03415f

Cited by 24 publications

(9 citation statements)

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“…The first charge and discharge capacities are 599 and 782 mAh g −1 , respectively, accompanied by a Columbic efficiency (CE) of 76.6%. The first irreversible capacity loss and relatively low CE may arise from the generation of the SEI layer at the electrolyte interface, lithium storage, and electrolyte decomposition [42][43][44]. In the 2nd, 10th, 20th, and 50th cycles, Co 3 O 4 electrode shows reversible capacities…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Wang

2021

Acta Metall. Sin. (Engl. Lett.)

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In this study, uniform Co 3 O 4 nanoparticles are prepared via a simple and facile hydrothermal synthesis without calcination treatment. When the Co 3 O 4 nanomaterials are investigated as anodes for lithium ion batteries, a good electrochemical property is achieved. Particularly, the reversible capacity of the as-synthesized Co 3 O 4 nanoparticle has a significant growth from 383 mAh g −1 of the initial cycle to 471 mAh g −1 of the 300th cycle at 2 A g −1 . Moreover, when it recovers to 50 mA g −1 after different current densities, a superior reversible capacity of 695 mAh g −1 can be reached. Such favorable electrochemical properties will make the as-obtained Co 3 O 4 have a good application prospect as anode material for lithium ion batteries.

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Section: Resultsmentioning

confidence: 99%

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Wang

2021

Acta Metall. Sin. (Engl. Lett.)

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“…Firstly, the mesoporous architectures may provide enough void space to buffer the volume expansion/contraction, prevent nanoparticles to reunite, and restrain the collapse of the structure during lithiation and delithiation. Secondly, 3D mesoporous architectures can also further facilitate electrolyte penetration and improve the contact area between mesoporous straw‐like Co 3 O 4 and electrolyte . Thirdly, 3D hierarchical mesoporous architectures may increase the activated sites and form the open channels for Li + transport.…”

Section: Resultsmentioning

confidence: 99%

“…Especially, TMOs have gradually attracted extensive research interest as anode materials for LIBs due to their high theoretical lithium‐storage capacity . Among these TMOs materials, Co 3 O 4 has attracted widespread attention as potential alternative anode materials in the field of LIBs research because of the high theoretical specific capacity (890 mA h g −1 ) and large tap density . However, the large volume expansion/contraction during the lithiation/delithiation processes and their inferior intrinsic electronic conductivity result in the degradation of capacity and poor rate capability.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, mesoporous materials do not make nanoparticles contact with each other and prevent nanoparticles to agglomerate into larger clusters . Some unique mesoporous materials exhibited outstanding electrochemical properties, such as porous nanosheets, hierarchical network‐like structures, hierarchical yolk‐shell dodecahedrons, 2D holey nanosheets, and mesoporous cubes . 2D holey Co 3 O 4 nanosheets showed small volume expansion (∼6%), demonstrating that the homogeneous holey structures could validly buffer the volume expansion.…”

Section: Introductionmentioning

confidence: 99%

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Three‐Dimensional Mesoporous Straw‐like Co₃O₄ Anode with Enhanced Electrochemical Performance for Lithium‐Ion Batteries

Dai

Jiang

et al. 2019

ChemistrySelect

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Herein, a three‐dimensional (3D) mesoporous straw‐like Co3O4 was prepared via a simple hydrothermal synthesis with cobalt acetate as the cobalt source and p‐phthalic acid as the precipitator. The straw‐like Co3O4 comprises lots of superposed nanosheets with thicknesses of 100–150 nm. Co3O4 nanosheets are assembled with irregular nanoparticles and there are a number of holes in the interior of nanosheets. When employed as an anode for rechargeable Li‐ion batteries, 3D mesoporous straw‐like Co3O4 indicates superior electrochemical activities. The discharge specific capacity maintains in about 1194 mAh g−1 after 100 cycles at 400 mA g−1. This straw‐like Co3O4 also delivers a high capacity of 956 mAh g−1 after 60 cycles at 800 mA g−1. The capacitive and diffusion behaviors are responsible for the superior Li+ storage of 3D mesoporous straw‐like Co3O4. The facile synthesis method and good electrochemical performances make the 3D mesoporous straw‐like Co3O4 a good candidate with enhanced electrochemical performance for Li‐ion batteries.

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“…When used as an anode material, the capacity can reach 1000 mA h g −1 after 100 cycles (at 0.4 A g −1 ). 14 nanosphere@GO as an anode for potassium-ion capacitors to enhance the fast storage of potassium ions. 16 (iii) Heteroatoms are doped into compounds to improve electrical conductivity and specific capacity.…”

Section: Introductionmentioning

confidence: 99%

Nickel Fluoride Nanorods as Anode Materials for Li-Ion Hybrid Capacitors

Jiao

Gao

et al. 2021

ACS Appl. Nano Mater.

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Lithium-ion hybrid capacitors (LIHCs) are considered as promising energy storage devices due to their high energy density of lithium-ion batteries and excellent power density of supercapacitors. The electrode material is the key to the performance of LIHCs. Therefore, a rod-like nanostructure of NiF 2 with a clear morphology was prepared by a simple hydrothermal method. The nanorod structure of NiF 2 shortens the transport distance of lithium ions and provides more active sites, thus showing excellent electrochemical performance. The specific capacity of the NR-NiF 2 electrode can reach 379 mA h g −1 after 500 cycles at 0.1 A g −1 and remains at 61 mA h g −1 after 10,000 cycles (a current density of 2 A g −1 ). Meanwhile, according to the fitting results of the peak current and sweep rate, b = 0.95 is obtained, indicating that the electrochemical behavior of the NR-NiF 2 material is dominated by pseudocapacitance. Furthermore, the LIHCs of NR-NiF 2 //AC are constructed and exhibit a high energy density of 87 W h kg −1 (at 96 W kg −1 ), a high power density of 6079 W kg −1 (at 27 W h kg −1 ), and an excellent cycle stability (capacity retention of 69% after 5000 cycles at 1 A g −1 ). Hence, NiF 2 nanorods with fast kinetic properties are a promising choice as an anode material for LIHCs.

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Two-dimensional porous Co₃O₄nanosheets for high-performance lithium ion batteries

Abstract: 2D porous Co3O4nanosheets are synthesizedviaa self-sacrificing template method. When applied as an anode for LIBs, the as-obtained 2D porous Co3O4nanosheets exhibit a high discharge specific capacity, good cycling stability, and high rate capability.

Cited by 24 publications

References 46 publications

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Three‐Dimensional Mesoporous Straw‐like Co₃O₄ Anode with Enhanced Electrochemical Performance for Lithium‐Ion Batteries

Nickel Fluoride Nanorods as Anode Materials for Li-Ion Hybrid Capacitors

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Two-dimensional porous Co3O4nanosheets for high-performance lithium ion batteries

Abstract: 2D porous Co3O4nanosheets are synthesizedviaa self-sacrificing template method. When applied as an anode for LIBs, the as-obtained 2D porous Co3O4nanosheets exhibit a high discharge specific capacity, good cycling stability, and high rate capability.

Cited by 24 publications

References 46 publications

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Hydrothermal Preparation of Homogeneous Cobalt Oxide Nanomaterials as Stable Anodes for Superior Lithium Ion Batteries

Three‐Dimensional Mesoporous Straw‐like Co3O4 Anode with Enhanced Electrochemical Performance for Lithium‐Ion Batteries

Nickel Fluoride Nanorods as Anode Materials for Li-Ion Hybrid Capacitors

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Product

Resources

About

Two-dimensional porous Co₃O₄nanosheets for high-performance lithium ion batteries

Three‐Dimensional Mesoporous Straw‐like Co₃O₄ Anode with Enhanced Electrochemical Performance for Lithium‐Ion Batteries