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- W4210389206 abstract "A novel graphite anode (Ni-g-C3N4) is synthesized by using graphitic carbon nitride as the precursor and nickel (Ni) as the catalyst, which dramatically decreases the reaction temperature to 850 °C. The critical role of Ni in denitrifying g-C3N4 to produce high-quality graphite is identified, with the results showing that the nitrogen content decreases from 62.1% to 1.2% and thus leading to greatly enhanced electrical conductivity as well as excellent rate capability, cycle performance and structure integrity. The Ni-g-C3N4 exhibits typical low voltage plateau characteristic of graphite anode and the transformation of graphite intercalation compounds are investigated in the in-situ XRD analysis during the discharge/charge process. The capacity retention is as high as 99.3% after 600 cycles at 0.5 A⋅g−1, demonstrating excellent structural stability. Moreover, the evolution from g-C3N4 to graphite Ni-g-C3N4 is investigated via TG-MS and high-temperature in-situ XRD, which clearly reveals that the catalytic graphitization processes mainly consist of the dissolution, re-precipitation and carbide conversion, along with the formation of intermediate Ni3C and the release of nitrogen gas. In general, this work not only proposes a novel method to synthesize high performance graphite anode from g-C3N4 for lithium ion batteries, but also unravels the catalytic graphitization mechanism." @default.
- W4210389206 created "2022-02-08" @default.
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- W4210389206 date "2022-03-01" @default.
- W4210389206 modified "2023-10-16" @default.
- W4210389206 title "Graphitic carbon nitride-derived high lithium storage capacity graphite material with regular layer structure and the structural evolution mechanism" @default.
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- W4210389206 doi "https://doi.org/10.1016/j.electacta.2022.139985" @default.
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