Electrochemical performance evaluation of carbon nitride synthesized at different temperatures as an anode material for lithium-ion batteries

Fe Powder Catalytically Synthesized C3N3 toward High-Performance Anode Materials of Lithium-Ion Batteries

“…With the increase of temperature, the wide peak at 1300–1700 cm –1 gradually became two narrow peaks and the relative intensity of the peak decreased, which can be attributed to the gradual decomposition of the triazine rings and the decrease of the pyridine nitrogen. The broad peak in the region of 3100–3500 cm –1 may correspond to the O–H bond and N–H band, of which the O–H bond should be derived from water absorption and the hydrolysis of C 3 N 3 Cl 3 and the N–H band may come from the protonation of nitrogen. − …”

Extraordinary Ultrahigh‐Capacity and Long Cycle Life Lithium‐Ion Batteries Enabled by Graphitic Carbon Nitride‐Perylene Polyimide Composites

“…Figure 8a shows that the deconvoluted C 1s HR-XPS spectrum of the pristine g-C 3 N 4 electrode displays four dominant peaks at 283.88, 284.28, 285.68, and 288.08 eV, which were attributed to the pure graphitic carbon C=C bonds, C-C/C-H bond, C=O/HO-C=O bonds, and N-C=N/C-(N) 3 bridging moieties, respectively. [60][61][62] These characteristic peaks were significantly decreased and shifted to higher binding energies (redshifted) when fully discharged to 0.002 V when compared to that when fully charged voltage of 2.8 V. In particular, the peaks observed at 284.48, 286.88, and 288.48 eV were attributed to the C=C, C=O/ HO-C=O, and N-C=N/C-(N) 3 bonds, respectively, which were remarkably diminished and red-shifted to become a broad peak during the discharge step to 0.002 V and then this peak was intensified when fully charged voltage of 2.8 V, demonstrating the incorporation of Li + into the basal plane of the g-C 3 N 4 nanosheets to produce different forms of intercalated compounds (i.e., LiC 6 and LiC y N x species) [17] and the formation of C-O-Li bonds during the discharge process, and then followed by the recovery of the original state of these peak features during being charged to 2.8 V. Figure 8b shows the HR-XPS N1s spectrum obtained for the pristine g-C 3 N 4 electrode can be resolved into four dominant peaks at 398.48, 399.58, 400.78, and 404.18 eV, corresponding to the aromatic pyridinic-N, pyrrolic-N, graphitic-N and C-NH 2 /pyridinic−N + -O x − groups, respectively. [28,60] In addition, the co-existence of a high C=N-C/C-N-H content and an appropriate amount of N-(C) 3 is capable of generating larger numbers of Li + storage sites to achieve a high density of Li + adsorption in the g-C 3 N 4 electrode during the electrochemical redox process, as described beforehand.…”

Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications

“…Based on the results, at a 0.1 C rate, the anode material exhibited a remarkable specific capacity of 2221 mAh g −1 at 600 °C (g-C 3 N 4 -600 °C) in addition to an improved cycling stability and rate capability. 299 The g-C 3 N 4 /Mo 2 CT x hybrid was synthesized for lithium storage. As expected, the rich exposed MXene layers provided fast ion diffusion and abundant active sites for Li storage.…”

“…Carbon nitride was prepared at different temperatures as an improved anode material for use in lithium-ion batteries. Based on the results, at a 0.1 C rate, the anode material exhibited a remarkable specific capacity of 2221 mAh g –1 at 600 °C (g-C 3 N 4 -600 °C) in addition to an improved cycling stability and rate capability . The g-C 3 N 4 /Mo 2 CT x hybrid was synthesized for lithium storage.…”