An Ostwald ripening route towards Ni-rich layered cathode material with cobalt-rich surface for lithium ion battery

Li, Yan; Li, Xinhai; Wang, Zhixing; Guo, Huajun; Wang, Jiexi

doi:10.1007/s40843-017-9162-3

Cited by 33 publications

(13 citation statements)

References 67 publications

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“…Rechargeable lithium-ion batteries (LIBs), as one of the energy storage technologies, are the key part of the contemporary energy system which is closely coupled with renewable energy generation, transmission and utilization [1][2][3][4]. Meanwhile, due to the high energy density, long lifespan and environmental friendliness, LIBs have been highly developed over the past decades and widely used in our daily life including portable electronics, electrical transportation, and even grid energy storage [5][6][7]. However, the current most mature LIBs cannot ever meet the ever-increasing demands [8][9].…”

Section: Introductionmentioning

confidence: 99%

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

Chen

Yan

et al. 2019

Sci. China Mater.

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Silicon-based material is one of the most promising substitutes of widely used graphite anodes for the next generation Li-ion batteries due to its high theoretical capacity, low working potential, environmental friendliness, and abundant natural resource. However, the huge volume expansion and serious interfacial side reactions during lithiation and delithiation progresses of the silicon anode are the key issues which impede their further practical applications. Rational designs of silicon nanostructures are effective ways to address these problems. In this progress report, we firstly highlight the fundamental scientific problems, and then focus on recent progresses in design, preparation, in-situ characterization methods and failure mechanism of nanostructured silicon anode for high capacity lithium battery. We also summarize the key lessons from the successes so far and offer perspectives and future challenges to promote the applications of silicon anode in practical lithium batteries.

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Section: Introductionmentioning

confidence: 99%

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

Chen

Yan

et al. 2019

Sci. China Mater.

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“…For comparison, the traditional LLOs electrode with aluminum foil as current collector was also prepared according to the procedures reported earlier (Li et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

Flexible Li[Li0.2Ni0.13Co0.13Mn0.54]O2/Carbon Nanotubes/Nanofibrillated Celluloses Composite Electrode for High-Performance Lithium-Ion Battery

Zhang

Xiao

et al. 2019

Front. Chem.

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Rapidly-growing demand for wearable and flexible devices is boosting the development of flexible lithium ion batteries (LIBs). The exploitation of flexible electrodes with high mechanical properties and superior electrochemical performances has been a key challenge for the rapid practical application of flexible LIBs. Herein, a flexible composite electrode was prepared from the mixed solutions of Li[Li 0.2 Ni 0.13 Co 0.13 Mn 0.54 ]O 2 (LLOs), carbon nanotubes(CNTs), and nanofibrillated celluloses (NFCs) via a vacuum filtration method. The resulting LLOs/CNTs/NFCs electrode delivered an initial discharge capacity of 253 mAh g −1 at 0.1 C in the voltage range from 2.0 to 4.6 V, and retained a reversible capacity of 178 mAh g −1 with 83% capacity retention after 100 cycles at 1 C. The LLOs/CNTs/NFCs electrode exhibited excellent flexibility along with repeated bending in the bending test. The LLOs/CNTs/NFCs electrode after bending test remained a discharge capacity of 149 mAh g −1 after 100 cycles at 1 C, and the corresponding capacity retentions was 76%. The excellent electrochemical performance and high flexibility can be ascribed to the framework formed by CNTs with high conductivity and NFCs with good mechanical properties. The results imply that the as-fabricated electrode can be a promising candidate for the flexible LIBs.

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“…The oxidation reactions of various organic solvents: 7presents the decomposition of LiPF 6 in LiPF 6 -based electrolytes; Eqs. (8) and (9) show further reactions between strong Lewis acid phosphorus pentafluoride (PF 5 ) and organic solvents or water; PF 5 may attack the electron lone pair of oxygen in the solvent molecule and then make it decompose. In the meantime, as shown in Eq.…”

Section: Failure Mechanism Of Electrolytesmentioning

confidence: 99%

“…Presently, in order to achieve the above energy density goals, many efforts have been focused on developing high-capacity cathode and anode materials of LIBs [5][6][7]. For cathode materials, Ni-rich ternary materials Li [8,9], while on the anode side, major efforts have been devoted to constructing siliconbased [10] or tin-based carbon composites with high capacity and good cycling stability [11]. However, higher-capacity materials tend to show lower thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Duan

Tang

Dai

et al. 2019

Electrochem. Energ. Rev.

594

260

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Lithium-ion batteries (LIBs), with relatively high energy density and power density, have been considered as a vital energy source in our daily life, especially in electric vehicles. However, energy density and safety related to thermal runaways are the main concerns for their further applications. In order to deeply understand the development of high energy density and safe LIBs, we comprehensively review the safety features of LIBs and the failure mechanisms of cathodes, anodes, separators and electrolyte. The corresponding solutions for designing safer components are systematically proposed. Additionally, the in situ or operando techniques, such as microscopy and spectrum analysis, the fiber Bragg grating sensor and the gas sensor, are summarized to monitor the internal conditions of LIBs in real time. The main purpose of this review is to provide some general guidelines for the design of safe and high energy density batteries from the views of both material and cell levels.

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An Ostwald ripening route towards Ni-rich layered cathode material with cobalt-rich surface for lithium ion battery

Cited by 33 publications

References 67 publications

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

Flexible Li[Li0.2Ni0.13Co0.13Mn0.54]O2/Carbon Nanotubes/Nanofibrillated Celluloses Composite Electrode for High-Performance Lithium-Ion Battery

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

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