Three‐Dimensionally “Curved” NiO Nanomembranes as Ultrahigh Rate Capability Anodes for Li‐Ion Batteries with Long Cycle Lifetimes

Sun, Xiaolei; Yan, Chenglin; Chen, Yao; Si, Wenping; Deng, Junwen; Oswald, Steffen; Liu, Lifeng; Schmidt, Oliver G.

doi:10.1002/aenm.201300912

Cited by 281 publications

(182 citation statements)

References 39 publications

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“…However, as a power source for electric vehicles (EVs), hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs), it is of great essentiality to develop satisfactory cathode materials with high energy density and cycling stability [5][6][7]. The energy density of a cathode is closely related to the capacity and operating voltage.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Han

Yang

et al. 2016

Sci. China Mater.

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Layered Li1.2Mn0.56Ni0.16Co0.08−xAlxO2 (0 ≤ x ≤ 0.08) cathode materials were successfully synthesized by a sol-gel method. X-ray diffraction and the refinement data indicate that all materials have typical α-NaFeO2 structure with R-3m space group, and the a-axis has almost no change, but there is a slight decrease in the c lattice parameter as well as the cell volume. Scanning electron microscopy and high resolution transmission electron microscopy prove that all the samples have uniform particle size of about 200-300 nm and smooth surface. The energy-dispersive X-ray spectroscopy mapping shows that aluminum has been homogeneously doped in the Li1.2Mn0.56Ni0.16Co0.08O2 cathode material. The cyclic voltammetry and electrochemical impedance spectroscopy reveal that appropriate Al-doping contributes to the reversible lithium-ion insertion and extraction, and then reduces the electrochemical polarization and charge transfer resistance. Li1.2Mn0.56Ni0.16Co0.08−xAlxO2 (x = 0.05) shows the lowest charge transfer resistance and the highest lithium-ion diffusion coefficient among all the samples. The Li-rich electrodes with low-level Al doping shows a much higher discharge capacity than the pristine one, especially the Li1.2Mn0.56Ni0.16Co0.08−xAlxO2 (x = 0.05) sample, which exhibits greater rate capacity and better fast charge-discharge performance than the other samples. Li1.2Mn0.56Ni0.16Co0.08−xAlxO2 (x = 0.05) also exhibits higher discharge capacity than the pristine one at each cycle at 55°C. These results clearly indicate that the high rate capacity together with a good high rate cycling performance and high-temperature performance of the low-Co Li1.2Mn0.56Ni0.16Co0.08−xAlxO2 (x=0.05) is a promising alternative to next-generation lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Han

Yang

et al. 2016

Sci. China Mater.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] For example, the most promising Li metal-based battery technologies such as lithium-sulphur and lithium-air batteries have not been successfully commercialized mainly because of the uncontrolled growth of lithium microstructures (LmSs) such as dendrites, fibers, whiskers, moss, etc., which can cause internal short circuit (ISC) of a cell and result in catastrophic fires or even explosions. [15][16][17] Recent field incidents such as fires on a Boeing 787 Dreamliner flight and in a Tesla electric vehicle (EV) or even in the Samsung Note 7 smartphone are believed to be closely linked to ISCs in LIBs.…”

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confidence: 99%

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

et al. 2016

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Knowledge about degradation and failure of Li-ion batteries (LIBs) is of paramount importance especially because failure can be accompanied by severe hazards. To contribute to the understanding of such phenomena synchrotron in-line phase contrast Xray tomography was employed to investigate internal cell deformation and degradation caused by an internal short circuit (ISC). The tomographic images taken from an uncycled Li/Li cell and a short-circuited Li/Li cell reveal how lithium microstructures (LmS) develop during electrochemical stripping and plating during discharge and charge and how the three-layer separator used is damaged by growing LmSs and delaminates and melts as a consequence of an ISC. Previously unknown insights into the internal cell degradation and deformation mechanisms caused by an ISC are obtained and provide hints of how the properties of the separator could be modified in order to improve the reliability and safety of current and next-generation LIBs.

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“…The reduction peak located at 1.05 V can be ascribed to the conversion of MnO 2 to Mn(II), and the strong reduction peak at $0.4 V mainly corresponds to the conversions of Mn(II) to Mn and NiO to Ni along with the formation of SEI lm. 20,22 In the anodic process, the peak located at 1.30 V corresponds to the oxidation of Mn to Mn(II), and the peaks at $2.25 V are assigned to the oxidation of Mn(II) to Mn(IV) and Ni to Ni(II). 20,22 Note that the CV curves almost overlap in subsequent cycles, demonstrating the stability of the electrode.…”

Section: Resultsmentioning

confidence: 99%

“…Various micro/nanostructured NiO and MnO 2 materials have been fabricated to overcome the above drawbacks. [20][21][22][23] It is demonstrated that tubular metal oxides materials have exhibited enhanced lithium storage performance due to their advantageous features for the Li + ion insertion and the volume buffering during charge/discharge process.…”

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confidence: 99%

NiO@MnO₂ core–shell composite microtube arrays for high-performance lithium ion batteries

et al. 2017

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Tubular array structures are very attractive for electrochemical energy storage and conversion systems due to their unique physicochemical properties. Herein, a NiO microtube array is fabricated via a facile oxalic acid corrosion method followed by heat treatment. A NiO@MnO 2 core-shell composite microtube array is further achieved by the anodic electrodeposition using the NiO microtube array as substrate. When applied as self-supported electrode for lithium ion batteries (LIBs), the NiO@MnO 2 core-shell composite microtube array electrode shows excellent lithium storage properties. The electrode delivers a reversible capacity of 510 mA h g À1 at a high rate of 5.1 A g À1 , showing its good rate capability. In particular, a reversible capacity of 1573 mA h g À1 is observed after 500 cycles at a current density of 0.53 A g À1 , demonstrating the superior cycling performance of the electrode. The electrodeposited MnO 2 layer as a protective shell prevents the NiO microtubes from deformation during electrochemical cycling, responsible for the superior cycle stability of the NiO@MnO 2 core-shell composite microtube array electrode. The prominent lithium storage performance of the composite microtube array electrode can be attributed to its unique structure characteristics.

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Three‐Dimensionally “Curved” NiO Nanomembranes as Ultrahigh Rate Capability Anodes for Li‐Ion Batteries with Long Cycle Lifetimes

Cited by 281 publications

References 39 publications

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

NiO@MnO₂ core–shell composite microtube arrays for high-performance lithium ion batteries

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Three‐Dimensionally “Curved” NiO Nanomembranes as Ultrahigh Rate Capability Anodes for Li‐Ion Batteries with Long Cycle Lifetimes

Cited by 281 publications

References 39 publications

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Enhanced electrochemical performance of Li-rich low-Co Li1.2Mn0.56Ni0.16Co0.08−x Al x O2 (0≤x≤0.08) as cathode materials

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

NiO@MnO2 core–shell composite microtube arrays for high-performance lithium ion batteries

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NiO@MnO₂ core–shell composite microtube arrays for high-performance lithium ion batteries