Ultrathin, Lightweight, and Wearable Li‐O<sub>2</sub> Battery with High Robustness and Gravimetric/Volumetric Energy Density

Liu, Tong; Xu, Ji‐Jing; Liu, Qingchao; Zhou, Chang; Yin, Yanbin; Yang, Xiao‐Yang; Zhang, Xinbo

doi:10.1002/smll.201602952

Cited by 71 publications

(60 citation statements)

References 43 publications

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“…Bulk ruthenium oxide (RuO 2 ) has a well-known 3D rutile crystal structure with metallic behavior that has drawn considerable attention not only in academic research, but also in industry due to its thermodynamic stability, semi-transparency, and distinctive metallic properties 13,14 . In recent years, RuO 2 NSs exfoliated from bulk rutile RuO 2 have been used in lithium-oxygen and lithium-ion battery applications because exfoliation facilitates the fabrication of NSs 15,16 .…”

Section: Introductionmentioning

confidence: 99%

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Lee

Sul

et al. 2018

NPG Asia Mater

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The structural, electrical, and optical properties of monolayer ruthenium oxide (RuO 2 ) nanosheets (NSs) fabricated by chemical exfoliation of a layered three-dimensional form of K-intercalated RuO 2 are studied systematically via experimental and computational methods. Monolayer RuO 2 NS is identified as having a distorted h-MX 2 structure. This is the first observation of a RuO 2 NS structure that is unlike the t-MX 2 structure of the RuO 2 layers in the parent material and does not have hexagonal symmetry. The distorted h-MX 2 RuO 2 NSs are shown to have optical transparency superior to that of graphene, thereby predicting the feasibility of applying RuO 2 NSs to flexible transparent electrodes. In addition, it is demonstrated that the semiconducting band structures of RuO 2 NSs can be manipulated to be semimetallic by adjusting the crystal structure, which is related to band-gap engineering. This finding indicates that RuO 2 NSs can be used in a variety of applications, such as flexible transparent electrodes, atomic-layer devices, and optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Lee

Sul

et al. 2018

NPG Asia Mater

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“…So far, great efforts have been devoted to developing the cathode catalyst with high activity and stability for oxygen-involved reactions in Li-O2 batteries [22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Peng et al [7] firstly reported the rechargeable Li-O2 batteries by catalyzing the reversible formation/decomposition of the Li2O2 on porous Au catalyst, which makes Li-O2 batteries promising for practical use.…”

Section: Introductionmentioning

confidence: 99%

Long life rechargeable Li-O2 batteries enabled by enhanced charge transfer in nanocable-like Fe@N-doped carbon nanotube catalyst

Zhou

Liu

et al. 2017

Sci. China Mater.

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Rechargeable Li-O2 batteries have attracted considerable interests because of their exceptional energy density. However, the short lifetime still remained as one of the bottle-neck obstacles for the practical application of rechargeable Li-O2 batteries. The development of efficient cathode catalyst is highly desirable to reduce the energy barrier of Li-O2 reaction and electrode failure. In this work, we report a facile strategy for the fabrication of a high-performance cathode catalyst for rechargeable Li-O2 batteries by the encapsulation of high content of active Fe nanorods into N-doped carbon nanotubes with high stability (denoted as Fe@NCNTs). First-principles calculations reveal that the synergistic charge transfer and redistribution between the interface of Fe nanorods, the CNT walls and the active N dopants greatly facilitate the chemisorption and subsequent dissociation of O2 molecules into the epoxy intermediates on the carbon surface, which benefits the uniform growth of nanosized discharge products on CNT surface and thus boosts the reversibility of Li-O2 reactions. As a result, the cathode with Fe@NCNT catalyst exhibits long cycling stability with high capacities (1000 mA h g −1 for 160 cycles and 600 mA h g −1 for 270 cycles). Based on the total mass of Fe@NCNTs + Li2O2, high gravimetric energy densities of 2120-2600 W h kg −1 can be achieved at the power densities of 50-795 W kg −1 .

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“…Recently, polymer electrolytes have been regarded as one of the most ideal candidates for high‐temperature LIBs, since they possess attributes including freedom from electrolyte leakage, high safety and no separator needed . Such electrolytes consist of a polymer host along with lithium salt and do not contain any organic solvent; meanwhile, the polymer plays a critical role in aspects of electrolyte performance .…”

Section: Introductionmentioning

confidence: 99%

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

Zhang

Yang

et al. 2017

ChemElectroChem

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A new family of composite polymer electrolytes (CPEs) is developed by blending pyrrolidinium‐based polymeric ionic liquid [P(DADMA)TFSI], poly(ethylene glycol) [PEG800], and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI). The structure, thermal behavior, electrochemical properties of these CPEs, as well as their potential application in high‐temperature lithium‐ion batteries (LIBs) are studied. The FTIR result reveals the interactions among P(DADMA)TFSI, PEG800, and Li+ cations. X‐ray diffraction and differential scanning calorimetry measurements show that the as‐prepared CPEs have amorphous structures. Furthermore, CPEs exhibit satisfactory ionic conductivity, as well as high thermal and electrochemical stabilities. In addition, Li/LiFePO4 cells with the as‐prepared CPE at 0.2C rate can achieve a discharge capacity of about 150 mA h g−1 at 80oC, with good capacity retention. These findings indicate that the as‐obtained CPEs have great potential for applications as safe electrolytes in high‐temperature LIBs.

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Ultrathin, Lightweight, and Wearable Li‐O₂ Battery with High Robustness and Gravimetric/Volumetric Energy Density

Cited by 71 publications

References 43 publications

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Long life rechargeable Li-O2 batteries enabled by enhanced charge transfer in nanocable-like Fe@N-doped carbon nanotube catalyst

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

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Ultrathin, Lightweight, and Wearable Li‐O2 Battery with High Robustness and Gravimetric/Volumetric Energy Density

Cited by 71 publications

References 43 publications

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Understanding the structural, electrical, and optical properties of monolayer h-phase RuO2 nanosheets: a combined experimental and computational study

Long life rechargeable Li-O2 batteries enabled by enhanced charge transfer in nanocable-like Fe@N-doped carbon nanotube catalyst

Polymeric Ionic Liquid‐poly(ethylene glycol) Composite Polymer Electrolytes for High‐Temperature Lithium‐Ion Batteries

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Product

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Ultrathin, Lightweight, and Wearable Li‐O₂ Battery with High Robustness and Gravimetric/Volumetric Energy Density