Capacity fading on cycling nano size grains of Li1.1V3O8, electrochemical investigation

Tanguy, François; Gaubicher, Joël; Guyomard, Dominique

doi:10.1016/j.electacta.2009.12.038

Cited by 21 publications

(18 citation statements)

References 30 publications

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“…One is that some vanadium based oxides (e.g., Li 1?x V 3 O 8 , NaV 6 O 15 ) with high performance can barely be obtained by a simple one-step synthesis method. Complicated methods such as sol-gel route followed by a subsequent calcination process [5,6], wet ball milling method combined with subsequent calcination [7], and self-sacrificing template method [8,9] are generally employed, but are not suitable for large scale industrial production. The other challenge is the relatively poor cycle life caused by the irreversible phase transformation during cycling [2,10].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and lithium storage performance of (NH4)2V3O8 nanoflakes

Wan

et al. 2016

J Appl Electrochem

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Single-crystalline (NH 4 ) 2 V 3 O 8 nanoflakes were successfully synthesized by a facile hydrothermal method. We investigated their electrochemical performance for use in lithium ion batteries for the first time. Interestingly, the as-prepared (NH 4 ) 2 V 3 O 8 electrode demonstrated good lithium storage properties. This material exhibited a high initial discharge capacity of 261.4 mAh g -1 at a current density of 150 mA g -1 . Apart from the capacity loss in the first two cycles, the discharge capacity remained relatively stable and a capacity of 215.8 mAh g -1 was maintained after 30 cycles, indicating good cycling stability. The Coulombic efficiency was close to 100 % during the cycling, revealing that the intercalation/deintercalation of Li ions in this material was highly reversible. The good electrochemical performance of (NH 4 ) 2 V 3 O 8 was mainly attributed to its flake-like morphology and intrinsically stable layered structure. Graphical AbstractKeywords (NH 4 ) 2 V 3 O 8 Á Nanoflakes Á Hydrothermal method Á Lithium ion batteries

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Section: Introductionmentioning

confidence: 99%

Facile synthesis and lithium storage performance of (NH4)2V3O8 nanoflakes

Wan

et al. 2016

J Appl Electrochem

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“…It has been reported that at a high current density, the initial capacity fading can be attributed to active material dissolution, passive film formation and loss of electrical contact. 20,27,47 As the number of cycles increases, the passive film on the nanowire surface becomes stable, which would prevent further dissolution of the nanowire. At the same time, more active materials would participate in the electrochemical reaction, resulting first in an increase and then a stabilization of the capacity.…”

Section: Characterization Of LIV 3 O 8 Nanowiresmentioning

confidence: 99%

Topotactically synthesized ultralong LiV3O8 nanowire cathode materials for high-rate and long-life rechargeable lithium batteries

Luo

Mai

et al. 2012

NPG Asia Mater

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High-power applications at fast charge and discharge rates are still significant challenges in the development of rechargeable lithium (Li) batteries. Here, we demonstrate that ultralong LiV 3 O 8 nanowire cathode materials synthesized by topotactic Li intercalation are capable of excellent high-rate performance with minimal capacity loss. A specific discharge capacity of 176 mAh g À1 can be obtained at the current density of 1500 mA g À1 , and the capacity is able to stabilize at 160 mAh g À1 after 400 cycles, corresponding to 0.025% capacity fading per cycle. For current density up to 2000 mA g À1 , the initial and the six-hundredth cycle capacities can reach 137 and 120 mAh g À1 , respectively, corresponding to a capacity fading of only 0.022% per cycle. The ability to provide this level of performance is attributed to a low-charge-transfer resistance, good structural stability, large surface area and suitable degree of crystallinity, and it indicates that LiV 3 O 8 nanowires are promising cathode materials for use in high-rate and long-life rechargeable Li batteries.

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“…The measurements were taken before cycling and after 20 th cycle in which capacity stabilization were achieved by all LVO-NP300, LVO-NP400 and LVO-NP500 (refer to Figure 4 The R sf values for all LVO-NPs had increased in 20 th cycle compared to that of before cycling, indicating higher extend of surface film formation upon cycling due to side reactions with electrolyte. [82] As the surface film formation had propagated into interparticle level, this affected the R ct which was increased in 20 th cycle compared to that of before cycling for all LVO-NPs. Besides, the R ct will also be affected by agglomeration of particles upon repeated lithium insertion and extraction which causes gradual capacity fading, as similarly observed in LVO-NP500.…”

Section: Effect Of Particle Sizementioning

confidence: 94%

“…Based on our observations, downsizing the particles size of LVO-NP would induce higher reactivity towards electrolyte, leading to passive film formation. [82,199] Alteration of electrolyte composition and passivation of particles' surface eventually leads to severe capacity fading upon prolonged cycling. Eventhough superior electrochemical performance can be achieved by effort of materials nanosizing.…”

Section: Effect Of Particle Sizementioning

confidence: 99%

“…For example, V 2 O 5 suffers from amorphization upon prolonged cycling due to destruction of the primary structural framework which leads to poor cycling stability. [216] Although Li 1+x V 3 O 8 posseses better cycling stability than V 2 O 5 , its electrochemical performance is usually hampered by lithium ion trapping [148,174] and detrimental side reactions with electrolyte [82]. This issue had been resolved in this thesis by tailoring the nanostructure and optimum ion substitution at the vanadium sides as discussed in Section 4.1.7.…”

Section: Structural Evolution Study Of Na 12 V 3 O 8 Nanobeltsmentioning

confidence: 99%

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Investigations of lithium insertion into transition metal oxide cathodes

Ko¹

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To the pursuit of powerful lithium ion battery for integration into future automobiles and various advanced applications, new generation cathode with good storage ability and sustainability is intensively studied and explored. Transition metal oxides with ordered rocksalt structure are one the mostly investigated candidates, which are able to insert/extract lithium ions with good structural tolerance for low power applications. However, the practicality of ordered rocksalt-based materials for high power applications are still restrained several intrinsic issues. Therefore, advancement in current lithium ion batteries technology are demanded to fulfill the application requirements.

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Capacity fading on cycling nano size grains of Li1.1V3O8, electrochemical investigation

Cited by 21 publications

References 30 publications

Facile synthesis and lithium storage performance of (NH4)2V3O8 nanoflakes

Facile synthesis and lithium storage performance of (NH4)2V3O8 nanoflakes

Topotactically synthesized ultralong LiV3O8 nanowire cathode materials for high-rate and long-life rechargeable lithium batteries

Investigations of lithium insertion into transition metal oxide cathodes

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