Conversion Reaction‐Based Oxide Nanomaterials for Lithium Ion Battery Anodes

Yu, Seung Ho; Lee, Soo Hong; Lee, Jun Young; Sung, Yung Eun; Hyeon, Taeghwan

doi:10.1002/smll.201502299

Cited by 443 publications

(256 citation statements)

References 338 publications

(418 reference statements)

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“…It can be seen that the reversible capacity gradually increases to 951 mAh g − 1 after the 70 cycles and then keeps stable in the range of 900–950 mAh g − 1 with a Coulombic efficiency nearly 100% during the following cycles. Similar phenomenon of the capacity increasing during cycling has been found in many transition metal oxide electrodes in previous studies [13, 48–52]. The possible reason for this would be the electrode activation, which induces the reversible growth of polymer/gel-like films to increase the capacity at low potentials [50].…”

Section: Resultssupporting

confidence: 76%

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

et al. 2018

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Nanocrystalline Fe2O3 thin films are deposited directly on the conduct substrates by pulsed laser deposition as anode materials for lithium-ion batteries. We demonstrate the well-designed Fe2O3 film electrodes are capable of excellent high-rate performance (510 mAh g− 1 at high current density of 15,000 mA g− 1) and superior cycling stability (905 mAh g− 1 at 100 mA g− 1 after 200 cycles), which are among the best reported state-of-the-art Fe2O3 anode materials. The outstanding lithium storage performances of the as-synthesized nanocrystalline Fe2O3 film are attributed to the advanced nanostructured architecture, which not only provides fast kinetics by the shortened lithium-ion diffusion lengths but also prolongs cycling life by preventing nanosized Fe2O3 particle agglomeration. The electrochemical performance results suggest that this novel Fe2O3 thin film is a promising anode material for all-solid-state thin film batteries.

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Section: Resultssupporting

confidence: 76%

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

et al. 2018

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“…[14,36] Among the strategies proposed for the synthesis of nanocomposites, cheap pathways that allow scaling from lab-scale to production-scale may lead to the actual application of these appealing electrode materials. Recently,t he structural variation issue of conversion anodes has been mitigated by adopting nanostructured composite morphologies based on metal oxide active materials and buffer matrices, such as carbon and metals,t hat contain the volumec hanges and also ensure the electron transport within the electrode.…”

Section: Introductionmentioning

confidence: 99%

A New CuO‐Fe₂O₃‐Mesocarbon Microbeads Conversion Anode in a High‐Performance Lithium‐Ion Battery with a Li_1.35Ni_0.48Fe_0.1Mn_1.72O₄ Spinel Cathode

et al. 2017

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A ternary CuO-Fe O -mesocarbon microbeads (MCMB) conversion anode was characterized and combined with a high-voltage Li Ni Fe Mn O spinel cathode in a lithium-ion battery of relevant performance in terms of cycling stability and rate capability. The CuO-Fe O -MCMB composite was prepared by using high-energy milling, a low-cost pathway that leads to a crystalline structure and homogeneous submicrometrical morphology as revealed by XRD and electron microscopy. The anode reversibly exchanges lithium ions through the conversion reactions of CuO and Fe O and by insertion into the MCMB carbon. Electrochemical tests, including impedance spectroscopy, revealed a conductive electrode/electrolyte interface that enabled the anode to achieve a reversible capacity value higher than 500 mAh g when cycled at a current of 120 mA g . The remarkable stability of the CuO-Fe O -MCMB electrode and the suitable characteristics in terms of delivered capacity and voltage-profile retention allowed its use in an efficient full lithium-ion cell with a high-voltage Li Ni Fe Mn O cathode. The cell had a working voltage of 3.6 V and delivered a capacity of 110 mAh g with a Coulombic efficiency above 99 % after 100 cycles at 148 mA g . This relevant performances, rarely achieved by lithium-ion systems that use the conversion reaction, are the result of an excellent cell balance in terms of negative-to-positive ratio, favored by the anode composition and electrochemical features.

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“…2D nanomaterials suffer from decrease of active surfaces for ion transport and storage due to the irreversible restacking of individual 2D nanosheets2728. Moreover 2D TMO nanomaterials also suffer from severe morphology changes and structural degradation, especially in the first discharge cycle, due to the reduction of the metal cation to M(0) (refs 29, 30, 31). For example, Tarascon et al .…”

mentioning

confidence: 99%

Holey two-dimensional transition metal oxide nanosheets for efficient energy storage

et al. 2017

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Transition metal oxide nanomaterials are promising electrodes for alkali-ion batteries owing to their distinct reaction mechanism, abundant active sites and shortened ion diffusion distance. However, detailed conversion reaction processes in terms of the oxidation state evolution and chemical/mechanical stability of the electrodes are still poorly understood. Herein we explore a general synthetic strategy for versatile synthesis of various holey transition metal oxide nanosheets with adjustable hole sizes that enable greatly enhanced alkali-ion storage properties. We employ in-situ transmission electron microscopy and operando X-ray absorption structures to study the mechanical properties, morphology evolution and oxidation state changes during electrochemical processes. We find that these holey oxide nanosheets exhibit strong mechanical stability inherited from graphene oxide, displaying minimal structural changes during lithiation/delithiation processes. These holey oxide nanosheets represent a promising material platform for in-situ probing the electrochemical processes, and could open up opportunities in many energy storage and conversion systems.

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Conversion Reaction‐Based Oxide Nanomaterials for Lithium Ion Battery Anodes

Cited by 443 publications

References 338 publications

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

A New CuO‐Fe₂O₃‐Mesocarbon Microbeads Conversion Anode in a High‐Performance Lithium‐Ion Battery with a Li_1.35Ni_0.48Fe_0.1Mn_1.72O₄ Spinel Cathode

Holey two-dimensional transition metal oxide nanosheets for efficient energy storage

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Conversion Reaction‐Based Oxide Nanomaterials for Lithium Ion Battery Anodes

Cited by 443 publications

References 338 publications

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

A New CuO‐Fe2O3‐Mesocarbon Microbeads Conversion Anode in a High‐Performance Lithium‐Ion Battery with a Li1.35Ni0.48Fe0.1Mn1.72O4 Spinel Cathode

Holey two-dimensional transition metal oxide nanosheets for efficient energy storage

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Product

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A New CuO‐Fe₂O₃‐Mesocarbon Microbeads Conversion Anode in a High‐Performance Lithium‐Ion Battery with a Li_1.35Ni_0.48Fe_0.1Mn_1.72O₄ Spinel Cathode