Nitrogen Deficient Graphitic Carbon Nitride as Anodes for Lithium-ion Batteries
Xianxian Li , Tiening Tan , Jian Zhang , Nan Zhang , Jianwei He , Wenmiao Han , Yadong Wang , Mu Pan
Journal of Wuhan University of Technology Materials Science Edition ›› 2020, Vol. 35 ›› Issue (2) : 263 -271.
Nitrogen Deficient Graphitic Carbon Nitride as Anodes for Lithium-ion Batteries
In order to overcome the problem that the low conductivity and high content of graphitic N will lead to serious irreversible capacity loss, magnesiothermic denitriding method was employed to fabricate nitrogen deficient g-C3N4 (ND-g-C3N4). By controlling the reaction conditions, ND-g-C3N4-675 with optimal electrochemical properties was obtained. The ND-g-C3N4-675 has thinner two-dimensional porous structure, with high specific surface area and good conductivity. The ND-g-C3N4-675 showed superior cyclic stability and rate capability (After 500 cycles under 1 000 mA·g−1, 2 264.9 mAh·g−1 was obtained). Moreover, it presented high initial coulombic efficiency (42.2%).
graphitic carbon nitride / magnesiothermic denitriding / graphene backbone / lithium ion batteries
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