Covalent modification of natural graphite with lithium benzoate multilayers via diazonium chemistry and their application in lithium ion batteries

Pan, Qinmin; Wang, Hongbo; Jiang, Yinghua

doi:10.1016/j.elecom.2006.11.013

Cited by 61 publications

(25 citation statements)

References 30 publications

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“…The discharge and charge capacities of the Ge-QD@NG/NGF yolk-shell nanoarchitecture are 1,597 mAh g −1 and 1,220 mAh g −1 , respectively, corresponding to a initial columbic efficiency of ∼76.39%, which is higher than that Ge and Ge/NGF electrodes. The irreversible capacity ratio can be assigned to the decomposition of electrolyte, forming a SEI on the surface of the electrode, and to the irreversible insertion of lithium ions into the Ge3738. Figures 3c,d show a series of Raman spectra of the Ge-QD@NG/NGF/ PDMS yolk-shell nanoarchitecture in the working battery during lithiation.…”

Section: Resultsmentioning

confidence: 99%

3D nitrogen-doped graphene foam with encapsulated germanium/nitrogen-doped graphene yolk-shell nanoarchitecture for high-performance flexible Li-ion battery

et al. 2017

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Flexible electrochemical energy storage devices have attracted extensive attention as promising power sources for the ever-growing field of flexible and wearable electronic products. However, the rational design of a novel electrode structure with a good flexibility, high capacity, fast charge–discharge rate and long cycling lifetimes remains a long-standing challenge for developing next-generation flexible energy-storage materials. Herein, we develop a facile and general approach to three-dimensional (3D) interconnected porous nitrogen-doped graphene foam with encapsulated Ge quantum dot/nitrogen-doped graphene yolk-shell nano architecture for high specific reversible capacity (1,220 mAh g−1), long cycling capability (over 96% reversible capacity retention from the second to 1,000 cycles) and ultra-high rate performance (over 800 mAh g−1 at 40 C). This work paves a way to develop the 3D interconnected graphene-based high-capacity electrode material systems, particularly those that suffer from huge volume expansion, for the future development of high-performance flexible energy storage systems.

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Section: Resultsmentioning

confidence: 99%

3D nitrogen-doped graphene foam with encapsulated germanium/nitrogen-doped graphene yolk-shell nanoarchitecture for high-performance flexible Li-ion battery

et al. 2017

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“…[223,224] While these effects were demonstrated with graphite, similar functionalization of ordered porous carbons should produce the corresponding effects.…”

mentioning

confidence: 91%

Functionalization of Porous Carbon Materials with Designed Pore Architecture

2009

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Recent progress in syntheses of porous carbons with designed pore architecture has rejuvenated the field of carbon chemistry and promises to provide new advanced materials. In order to reap the full benefit of designer carbons, it is necessary to develop chemistries for functionalizing the porous carbon surfaces. This Review examines methods of functionalizing porous carbon through direct incorporation of heteroatoms in the carbon synthesis, surface oxidation and activation, halogenation, sulfonation, grafting, attachment of nanoparticles and surface coating with polymers. Methods of characterizing the functionalized carbon materials and applications that benefit from functionalized nanoporous carbons with designed architecture are also highlighted.

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“…The NG/Cu electrode coated with the 3 hrs N-UNCD fi lm does not show the LiC 24 (003) peak. This effect is probably due to the fact that although the 3 hr coating of N-UNCD is thin and incomplete to provide full coverage of the NG/Cu electrode to withstand the 10% volume change in natural graphite, which occurs during long-term cycling, it is still capable of withstanding the smaller volume expansion due to the formation of LiC 24 . The graphite particles containing LiC 24 remain intact and continue to allow the intercalation of lithium.…”

Section: Communicationmentioning

confidence: 86%

Electrically Conductive Ultrananocrystalline Diamond‐Coated Natural Graphite‐Copper Anode for New Long Life Lithium‐Ion Battery

et al. 2014

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Covalent modification of natural graphite with lithium benzoate multilayers via diazonium chemistry and their application in lithium ion batteries

Cited by 61 publications

References 30 publications

3D nitrogen-doped graphene foam with encapsulated germanium/nitrogen-doped graphene yolk-shell nanoarchitecture for high-performance flexible Li-ion battery

3D nitrogen-doped graphene foam with encapsulated germanium/nitrogen-doped graphene yolk-shell nanoarchitecture for high-performance flexible Li-ion battery

Functionalization of Porous Carbon Materials with Designed Pore Architecture

Electrically Conductive Ultrananocrystalline Diamond‐Coated Natural Graphite‐Copper Anode for New Long Life Lithium‐Ion Battery

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