Self-supported hierarchical hollow-branch cobalt oxide nanorod arrays as binder-free electrodes for high-performance lithium ion batteries

Zhang, Wen; Yan, Xiaoyan; Tong, Xili; Yang, Jing; Liu, Miao; Sun, Yaoyao; Peng, Liyuan

doi:10.1016/j.matlet.2015.09.134

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…As an important magnetic p‐type semiconductor, Co 3 O 4 has been widely applied in heterogeneous catalysts, electrochemical capacitors, gas sensors, lithium‐air batteries, and lithium‐ion batteries (LIBs), and so on . Many of Co 3 O 4 ‐based nanomaterials with different morphologies such as nanoparticles, nanoterapods, nanofiber, and spherical structures had been prepared and reported. The properties of cobalt oxide‐based materials strongly depend on their morphologies and structures, including crystal sizes, orientations, stacking manners, aspect ratios, and even crystalline densities.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄

Yao

Liu

Dai

et al. 2017

Journal of the Chinese Chemical Society

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Porous Co3O4 nanosheets were designed and fabricated from common Co(NO3 )2 solution without any surfactants or templates under microwave radiation conditions. After the microstructures and morphologies were characterized by scanning electron microscope (SEM), X‐ray powder diffraction (XRD), transmission electron microscopy (TEM), and N2 absorption/desorption isotherms techniques, the obtained Co3O4 nanosheets were applied for reversible Li‐storage, displaying larger capacity, better cycling performance and rate capability, i.e., a reversible specific capacity of ca. 800 mAh/g during initial 30 cycles and a reversible capacity of 450 mAh/g at 2C for Co3O4 nanosheets, which were almost twice higher than those for Co3O4 nanoparticles. The improved cycling stability could be attributed to the remarkable synergistic effects between porous structures and nanosheet‐like morphologies.

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Section: Introductionmentioning

confidence: 99%

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄

Yao

Liu

Dai

et al. 2017

Journal of the Chinese Chemical Society

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“…Yan, Tong, and coworkers demonstrated that CoO can coat on the surface of ZnO nanorod arrays by electroplating method. The ZnO template can be removed by treating the obtained electrode at KOH solution [93].…”

Section: Electroplatingmentioning

confidence: 99%

Binder-Free Electrodes and Their Application for Li-Ion Batteries

Kang¹,

Deng

Chen³

et al. 2020

Nanoscale Res Lett

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Lithium-ion batteries (LIB) as energy supply and storage systems have been widely used in electronics, electric vehicles, and utility grids. However, there is an increasing demand to enhance the energy density of LIB. Therefore, the development of new electrode materials with high energy density becomes significant. Although many novel materials have been discovered, issues remain as (1) the weak interaction and interface problem between the binder and the active material (metal oxide, Si, Li, S, etc.), (2) large volume change, (3) low ion/electron conductivity, and (4) selfaggregation of active materials during charge and discharge processes. Currently, the binder-free electrode serves as a promising candidate to address the issues above. Firstly, the interface problem of the binder and active materials can be solved by fixing the active material directly to the conductive substrate. Secondly, the large volume expansion of active materials can be accommodated by the porosity of the binder-free electrode. Thirdly, the ion and electron conductivity can be enhanced by the close contact between the conductive substrate and the active material. Therefore, the binderfree electrode generally exhibits excellent electrochemical performances. The traditional manufacture process contains electrochemically inactive binders and conductive materials, which reduces the specific capacity and energy density of the active materials. When the binder and the conductive material are eliminated, the energy density of the battery can be largely improved. This review presents the preparation, application, and outlook of binder-free electrodes. First, different conductive substrates are introduced, which serve as carriers for the active materials. It is followed by the binderfree electrode fabrication method from the perspectives of chemistry, physics, and electricity. Subsequently, the application of the binder-free electrode in the field of the flexible battery is presented. Finally, the outlook in terms of these processing methods and the applications are provided.

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“…The nanoarrays are the electroactive material, and the substrate works as the current collector. Single‐component NAA electrodes consist of 1D (nanowire, nanorod, and nanotube), 2D (nanosheet, nanoflake, and nanowall) or 3D (branched structure) nanostructures. Rogers and Paik, et al demonstrated that, despite the tremendous stresses and volume changes involved in charge–discharge cycles, robust performance in Si based LIBs is possible by structuring Si into nanotube arrays ( Figure 6 a) .…”

Section: Electrochemical Performances Of the Naa Electrodesmentioning

confidence: 99%

Nanoarchitectured Array Electrodes for Rechargeable Lithium‐ and Sodium‐Ion Batteries

Zhou

Lei

2016

Advanced Energy Materials

180

107

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Among the various available EES technologies, lithium-ion batteries (LIBs) are certainly a contender because of the much higher energy stored per unit weight or volume compared to other conventional batteries (lead-acid, nickel-hydride, redoxfl ow, and high-temperature batteries). The higher energy density comes from the higher cell voltage (3-5 V, Figure 1 ) due to the use of non-aqueous electrolytes along with higher capacity values (up to 4000 mAh g −1 ) compared to aqueous electrolyte-based battery systems (< 2 V). [ 2,3 ] Since the fi rst commercial launch by Sony, LIBs have conquered the market of portable electronics during the past two decades. They are now being intensively pursued for transportation applications, including hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), and electric vehicles (EV). The representative EV model is Model S (Tesla Motor) that employs LIBs to realize all-wheel drive with dual motors, reaching a maximum driving range of 270 miles and possessing an environment-friendly feature of zero emissions. LIBs are also being seriously considered for the effi cient storage and utilization of intermittent renewable energies due to the rising demands for power storage units that supplement irregular power generation and consumption patterns, and also realize the future power network system, such as the Smart Grid. LIBs with good capabilities and rapid response properties are appropriate for smoothing short time power variations through frequency regulation. [ 4 ] The market is at its initial stage and worth approximately 2 billion dollars, but is expected to grow explosively up to 35 billion dollars by 2020 with an expansion of renewable energy supplies and the Smart Grid system. [ 5 ] However, concerns over potentially rising costs and the availability of global lithium resources have been arisen because of the fact that most easily accessible lithium reserves are in remote or politically sensitive areas. [6][7][8] The foreseeable price rise of lithium compounds will make EES technologies based on LIBs less affordable. Recently, rapidly growing attention has shifted to sodium-ion batteries (SIBs) due to the cost effectiveness and geographical distribution of sodium. Theoretically speaking, SIBs may not reach the energy density of that of LIBs because Na is three times heavier than Li. But given its suitable potential of −2.71 V (vs SHE), which is only 0.3 V more positive than that of Li, there is only a small energy penalty to pay, meaning that SIBs could fi nd their more suitable application in the presence of a large grid support where the operational cost Rechargeable ion batteries have contributed immensely to shaping the modern world and been seriously considered for the effi cient storage and utilization of intermittent renewable energies. To fulfi ll their potential in the future market, superior battery performance of high capacity, great rate capability, and long lifespan is undoubtedly required. In the past decade, along with discovering new electrode mat...

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Self-supported hierarchical hollow-branch cobalt oxide nanorod arrays as binder-free electrodes for high-performance lithium ion batteries

Cited by 11 publications

References 18 publications

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄

Binder-Free Electrodes and Their Application for Li-Ion Batteries

Nanoarchitectured Array Electrodes for Rechargeable Lithium‐ and Sodium‐Ion Batteries

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Self-supported hierarchical hollow-branch cobalt oxide nanorod arrays as binder-free electrodes for high-performance lithium ion batteries

Cited by 11 publications

References 18 publications

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co3O4

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co3O4

Binder-Free Electrodes and Their Application for Li-Ion Batteries

Nanoarchitectured Array Electrodes for Rechargeable Lithium‐ and Sodium‐Ion Batteries

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Product

Resources

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Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄

Microwave-assisted Synthesis and Its Reversible Li-storage Properties of Porous Sheet-like Co₃O₄