An understanding of anomalous capacity of nano-sized CoO anode materials for advanced Li-ion battery

Chen, C.H.; Hwang, Bing‐Joe; Do, Jing-Shan; Weng, Jingwen; Venkateswarlu, M.; Cheng, Ming‐Yao; Santhanam, R.; Ragavendran, K.; Lee, J.F.; Chen, J.M.; Liu, D.G.

doi:10.1016/j.elecom.2010.01.031

Cited by 67 publications

(30 citation statements)

References 9 publications

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“…The reason for higher capacity of milled sample should basically be attributed to the smaller size with larger surface area than their as-prepared sample. Thus, the milled sample can provide more reaction sites on the surface and the smaller diameter provides a short diffusion length for Li diffusion, which could improve the charge transfer and the electrochemical reactions [20]. Moreover, decrease in mean particle size results in an increase in cyclability and rate capacity of cathode materials since smaller particles are more flexible for lithium insertion-deinsertion than larger particles [21].…”

Section: Resultsmentioning

confidence: 99%

Nanostructured MgFe2O4 as anode materials for lithium-ion batteries

Sivakumar

Gnanakan

Karthikeyan

et al. 2011

Journal of Alloys and Compounds

108

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Section: Resultsmentioning

confidence: 99%

Nanostructured MgFe2O4 as anode materials for lithium-ion batteries

Sivakumar

Gnanakan

Karthikeyan

et al. 2011

Journal of Alloys and Compounds

108

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“…Nevertheless, the commercial use of pure CoO is still hampered by its high price, low rate capability arising from the poor conductivity, and rapid capacity fading by severe agglomerations and large volume change during charge/discharge cycling [2,11]. In addition, CoO material exhibits large hysteresis in charge/discharge curves with a low energy efficiency achieved [12,13]. To circumvent these problems, an effective strategy is to apply hollow or porous CoO nanostructures (e.g., nanoscale size or nanoporous structure).…”

Section: Introductionmentioning

confidence: 99%

Mesoporous cobalt monoxide nanorods grown on reduced graphene oxide nanosheets with high lithium storage performance

Zhu

Huang

Gan

et al. 2014

Electrochimica Acta

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“…In addition, the formation of higher oxides (Co 2 O 3 and Co 3 O 4 ) by the decomposition of Li 2 O contributes to this increase of capacity [484]. This feature has also been invoked to explain the increase of capacity upon cycling that is commonly observed in cobalt oxide [484,485].…”

Section: Coomentioning

confidence: 95%

Anodes for Li-Ion Batteries

et al. 2016

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Lithium-ion batteries (LiBs) have made considerable progress since the first commercial one by Sony in 1991, which had LiCoO 2 and graphite as active elements of the positive and negative electrodes, respectively. The LiBs are now the primary energy storage devices in the transportation and communications, from portable use in computers, up to electric and hybrid vehicles. More recently, they have also been used as back-up supply units, frequency regulators (load leveling) to integrate on smart grids the electricity produced by windmills and photovoltaic plants (for a recent review, see [1]). These applications require high energy densities, high power, and safety among others. Considerable efforts have been made to propose other electrodes to fulfill these requirements. We have recently reviewed the works and progress concerning the materials for the positive electrode [2][3][4][5][6]. The present work is devoted to the materials for the negative electrode counterpart. It is common to use the terminology anode and cathode for the negative and positive electrodes, respectively, although the electrodes play alternatively the role of anode and cathode during the charge and discharge process. We shall use this terminology in the following for conciseness purposes only.An ideal active anode element should fulfill the following requirements as follows: (1) It must be light and accommodate as much Li as possible to optimize the gravimetric capacity. (2) Its redox potential with respect to Li 0 /Li + must be as small as possible at any Li-concentration. The reason is that this potential is subtracted to the redox potential of the cathode material to give the overall voltage of the cell, and smaller voltage means smaller energy density. (3) It must possess good electronic and ionic conductivities since faster motion of the lithium ions and the electrons also mean higher power density of the cell. (4) It must not be soluble in the solvents of the electrolyte and not react with the lithium salt. (5) It must be safe, i.e. avoid any thermal runaway of the battery, a criterion that is not independent of the previous one, but deserves special attention, especially for use in transportation such as electric vehicles and planes. (6) It must be cheap and environmentally friendly. The different materials proposed as anode elements for Li-ion batteries must be discussed with respect to these different criteria.The graphite is still the most used anode material and is still the reference. The first works giving evidence of the insertion of lithium in graphite date from 1955 [7], confirmed by the synthesis of LiC 6 in 1965 [8]. The synthesis of LiC 6 , however, was not obtained by electrochemical process at that time. Another decade was spent before Besenhard and Eichinger discovered the reversible intercalation of lithium in graphite, proposing this material as an anode in 1976 [9,10]. Increasing the Li content in LiC 6 is possible [8], but no reversible cycling beyond LiC 6 could ever be obtained. The graphite anode can thus be cyc...

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An understanding of anomalous capacity of nano-sized CoO anode materials for advanced Li-ion battery

Cited by 67 publications

References 9 publications

Nanostructured MgFe2O4 as anode materials for lithium-ion batteries

Nanostructured MgFe2O4 as anode materials for lithium-ion batteries

Mesoporous cobalt monoxide nanorods grown on reduced graphene oxide nanosheets with high lithium storage performance

Anodes for Li-Ion Batteries

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