In situ preparation of a binder-free nano-cotton-like CuO–Cu integrated anode on a current collector by laser ablation oxidation for long cycle life Li-ion batteries

Liang, Peng; Zhang, Hongjun; Su, Yibo; Huang, Zeya; Wang, Chang‐An; Zhong, Minlin

doi:10.1039/c7ta04660j

Cited by 32 publications

(20 citation statements)

References 55 publications

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“…During the laser surface ablation process, the cobalt vapor plume was produced from the surface of the Co foil induced by the intense laser irradiation. After that, the Co vapor plume collided and reacted with air to form cotton‐like CoO nanoparticles, which directly deposited on the surface of the target Co foil and formed CoO‐Co integrated anode (Figure A) . The CoO‐side of the integrated anode was subsequently dipped into an aqueous dopamine solution (pH: ~8.5) to coat a layer of dopamine on the surface of the CoO.…”

Section: Resultsmentioning

confidence: 94%

“…Therefore, the sample's mass loss for before and after dissolving in concentrated sulfuric acid solution is the average loading mass of active material, which was about Figure 1A). 18 The CoO-side of the integrated anode was subsequently dipped into an aqueous dopamine solution (pH:~8.5) to coat a layer of dopamine on the surface of the CoO. The dopamine coating mechanism on solid inorganic surfaces in aqueous solution has been studied previously.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…Secondly, to decrease the diffusion distance of Li ion, the size of TMOs particle needs to be as small as possible . Thirdly, electrons should easily transfer in the paths between the active material and current collector . Lastly, a conductive layer can accelerate the electron transfer and reinforce structure, which can promote the conductivity and structural stability of TMOs …”

Section: Introductionmentioning

confidence: 99%

“…17 Additionally, our previous work prepared CuO-Cu integrated anode shows ultralong cycle life and stable cycle performance when tested as an anode of LIB. 18 Similarly, electrochemically and structure stable coatings, such as carbon, can prevent contact between TMOs active material and electrolyte, while also enhancing the intrinsically poor electronic conductivity of TMOs. 19,20 For instance, foam-like CoO@N,S-codoped carbon composites could exhibit an excellent lithium storage performance.…”

Section: Introductionmentioning

confidence: 99%

“…24 Thirdly, electrons should easily transfer in the paths between the active material and current collector. 18 Lastly, a conductive layer can accelerate the electron transfer and reinforce structure, which can promote the conductivity and structural stability of TMOs. 25 From above, it is obvious that to improve the cycling stability, rate performance, and simplify the preparation process simultaneously, the development of a facile method for the large-scale fabrication of high conductivity nanostructure integrated electrode is in urgent demand.…”

Section: Introductionmentioning

confidence: 99%

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Binder‐free carbon‐coated nanocotton transition metal oxides integrated anodes by laser surface ablation for lithium‐ion batteries

Liang

Zhang

Pan

et al. 2019

Surface & Interface Analysis

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In this paper, an efficient laser surface ablation strategy for producing binder‐free carbon‐coated nanocotton CoO‐Co integrated anode is reported. The fabrication process introduces in‐situ growing nanocotton‐like CoO on the surface of Co foil via ablating with a nanosecond laser. After that, coated with dopamine as carbon source, the CoO‐Co composite foil is heated in Argon atmosphere to form a CoO@C‐Co foil as an anode of LIB. The laser surface ablation exhibits high fabrication speed (~10 minutes) and significantly reduces the processing time. The obtained binder‐free CoO@C‐Co integrated anode shows a unique cotton‐like villous structure with large specific surface area and an active material/current collector integrated architecture, which provides a stabilized rapid electronic conduction path. When tested as an anode for LIBs, the CoO@C‐Co integrated anode possesses superior performance: First discharge capacity of 1301.5 mAh g−1 is achieved at a current density of 0.1 A g−1. Also at a high current density of 1.5 A g−1, the second discharge capacity of 791.7 mAh g−1 is achieved. After 800 cycles, reversible capacities of 799.8 mAh g−1 can still be achieved with an average coulombic efficiency of nearly 100%. In addition, this strategy is suitable for the production of other carbon coated transition metal oxides integrated anodes, such as NiO@C‐Ni, Fe2O3/Fe3O4@C‐Fe, and CuO/Cu2O@C‐Cu integrated anodes.

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Section: Resultsmentioning

confidence: 94%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Binder‐free carbon‐coated nanocotton transition metal oxides integrated anodes by laser surface ablation for lithium‐ion batteries

Liang

Zhang

Pan

et al. 2019

Surface & Interface Analysis

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Advanced Matrixes for Binder‐Free Nanostructured Electrodes in Lithium‐Ion Batteries

et al. 2020

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Commercial lithium‐ion batteries (LIBs), limited by their insufficient reversible capacity, short cyclability, and high cost, are facing ever‐growing requirements for further increases in power capability, energy density, lifespan, and flexibility. The presence of insulating and electrochemically inactive binders in commercial LIB electrodes causes uneven active material distribution and poor contact of these materials with substrates, reducing battery performance. Thus, nanostructured electrodes with binder‐free designs are developed and have numerous advantages including large surface area, robust adhesion to substrates, high areal/specific capacity, fast electron/ion transfer, and free space for alleviating volume expansion, leading to superior battery performance. Herein, recent progress on different kinds of supporting matrixes including metals, carbonaceous materials, and polymers as well as other substrates for binder‐free nanostructured electrodes in LIBs are summarized systematically. Furthermore, the potential applications of these binder‐free nanostructured electrodes in practical full‐cell‐configuration LIBs, in particular fully flexible/stretchable LIBs, are outlined in detail. Finally, the future opportunities and challenges for such full‐cell LIBs based on binder‐free nanostructured electrodes are discussed.

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A Nonflammable High‐Voltage 4.7 V Anode‐Free Lithium Battery

et al. 2022

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Anode‐free lithium‐metal batteries employ in situ lithium‐plated current collectors as negative electrodes to afford optimal mass and volumetric energy densities. The main challenges to such batteries include their poor cycling stability and the safety issues of the flammable organic electrolytes. Here, a high‐voltage 4.7 V anode‐free lithium‐metal battery is reported, which uses a Cu foil coated with a layer (≈950 nm) of silicon–polyacrylonitrile (Si‐PAN, 25.5 µg cm−2) as the negative electrode, a high‐voltage cobalt‐free LiNi0.5Mn1.5O4 (LNMO) as the positive electrode and a safe, nonflammable ionic liquid electrolyte composed of 4.5 m lithium bis(fluorosulfonyl)imide (LiFSI) salt in N‐methyl‐N‐propyl pyrrolidiniumbis(fluorosulfonyl)imide (Py13FSI) with 1 wt% lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) as additive. The Si‐PAN coating is found to seed the growth of lithium during charging, and reversibly expand/shrink during lithium plating/stripping over battery cycling. The wide‐voltage‐window electrolyte containing a high concentration of FSI− and TFSI− facilitates the formation of stable solid‐electrolyte interphase, affording a 4.7 V anode‐free Cu@Si‐PAN/LiNi0.5Mn1.5O4 battery with a reversible specific capacity of ≈120 mAh g−1 and high cycling stability (80% capacity retention after 120 cycles). These results represent the first anode‐free Li battery with a high 4.7 V discharge voltage and high safety.

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In situ preparation of a binder-free nano-cotton-like CuO–Cu integrated anode on a current collector by laser ablation oxidation for long cycle life Li-ion batteries

Abstract: In situ preparation of a long cycle life CuO–Cu integrated anode on a Cu current collector by one-step laser ablation.

Cited by 32 publications

References 55 publications

Binder‐free carbon‐coated nanocotton transition metal oxides integrated anodes by laser surface ablation for lithium‐ion batteries

Binder‐free carbon‐coated nanocotton transition metal oxides integrated anodes by laser surface ablation for lithium‐ion batteries

Advanced Matrixes for Binder‐Free Nanostructured Electrodes in Lithium‐Ion Batteries

A Nonflammable High‐Voltage 4.7 V Anode‐Free Lithium Battery

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