Electrochemical and Solid-State Lithiation of Graphitic C3N4
Electrochemical and Solid-State Lithiation of Graphitic C3N4
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DOI：
10.1021/cm303870x
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发表时间：
2013-02-12
影响因子：
8.6
通讯作者：
Dudney, Nancy J.
中科院分区：
文献类型：
--
作者：
Veith, Gabriel M.;Baggetto, Loic;Dudney, Nancy J.
采用电化学法和固相反应法制备了锂化石墨氮化碳（C3 N4）。将Li添加到C3 N4中导致Li与C3 N4中的类石墨C3 N物质之间的反应。该不可逆反应导致Li-CH=NR和Li-N= CR 2物质的形成，这对阳极性能是有害的。预测用于阳极应用的合适的氮掺杂碳结构需要高浓度的吡啶C-N-C末端键和低浓度的季C3 N物质以提高电子电导率和可逆地循环Li离子。
Lithiated graphitic carbon nitride (C3N4) was fabricated by electrochemical and solid-state reactions. The addition of Li to C3N4 results in a reaction between the Li and the graphite-like C3N species in C3N4. This irreversible reaction leads to the formation of Li-CH=NR and Li-N=CR2 species, which are detrimental to anode properties. Suitable nitrogen-doped carbon structures for anode applications are predicted to need high concentrations of pyridinic C-N-C terminal bonds and low concentrations of quaternary C3N species to boost electronic conductivity and reversibly cycle Li ions.