Superhigh capacity and rate capability of high-level nitrogen-doped graphene sheets as anode materials for lithium-ion batteries

Cai, Dandan; Lian, Peichao; Zhu, Xuefeng; Li, Dongdong; Yang, Weishen; Wang, Haihui

doi:10.1016/j.electacta.2012.11.105

Cited by 115 publications

(63 citation statements)

References 42 publications

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“…After 50 cycles, the electrode still maintained a discharge capacity of 2,132 mA h g À 1 , which is approximately 99.2% of the second electrode (2,150 mAh g À 1 ). To the best of our knowledge, such an exceedingly high Li storage capacity has not been reported previously for an N-doped carbon-based anode material 43,49,50 . To understand the electrochemical performance of the asprepared N-doped graphene analogous particles, we further studied the rate performance of an electrode.…”

Section: Characterizationmentioning

confidence: 91%

“…Wang and co-workers synthesized N-doped graphene with a N-doping level of 7.04 atom% by thermally annealing graphene and melamine. In this case, the reversible capacity was 1,136 mA h g À 1 , when a relatively low current density of 50 mA g À 1 was used 50 . Moreover, the relative low initial coulombic efficiency can be attributed to the irreversible capacity loss, including the formation of the SEI film and the decomposition of the electrolyte.…”

Section: Characterizationmentioning

confidence: 99%

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High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

2014

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Theoretical and experimental results have revealed that the lithium-ion storage capacity for nitrogen-doped graphene largely depends on the nitrogen-doping level. However, most nitrogen-doped carbon materials used for lithium-ion batteries are reported to have a nitrogen content of approximately 10 wt% because a higher number of nitrogen atoms in the two-dimensional honeycomb lattice can result in structural instability. Here we report nitrogen-doped graphene particle analogues with a nitrogen content of up to 17.72 wt% that are prepared by the pyrolysis of a nitrogen-containing zeolitic imidazolate framework at 800°C under a nitrogen atmosphere. As an anode material for lithium-ion batteries, these particles retain a capacity of 2,132 mA h g À 1 after 50 cycles at a current density of 100 mA g À 1 , and 785 mAh g À 1 after 1,000 cycles at 5 A g À 1 . The remarkable performance results from the graphene analogous particles doped with nitrogen within the hexagonal lattice and edges.

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Section: Characterizationmentioning

confidence: 91%

Section: Characterizationmentioning

confidence: 99%

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

2014

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“…3b, the main peak the N 1s peak of the nitrogen-doped graphene sheets can be resolved into three components centered at 398. 4 pyridine-like, pyrrolic, and graphitic nitrogen atoms doped in the graphene, respectively [23][24][25][26][27]. The atomic percentage of doped nitrogen is about 1.75 wt.%.…”

Section: Resultsmentioning

confidence: 99%

“…Firstly, the nitrogen-doped graphene still maintained good mechanical properties as the pristine graphene [23][24][25][26][27]. Secondly, the doped nitrogen atoms can provide extra lone pair electrons, which makes the electrical conductivity improved compared with the pristine graphene [17].…”

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confidence: 91%