期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 30, 页码 34583-34592出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c05607
关键词
g-C3N4/rGO; nanocomposites; photocharging; Li-ion oxygen batteries; photocatalyst
资金
- Scientific and Technological Research Council of Turkey [219M269]
In this study, g-C3N4/rGO nanocomposites were synthesized and used as photocatalysts in Li-ion oxygen batteries, effectively reducing the charging potential under photoassisted conditions and improving battery performance.
In this work, g-C3N4/rGO nanocomposites were synthesized to use them as photocatalysts in Li-ion oxygen batteries by aiming at the reduction of the charging potential efficiently under photoassisted conditions. Fourier transform infrared (FTIR) spectra showed that novel C=C bonds formed between g-C3N4 and rGO during the decomposition of melamine and that the formation of these bonds was assumed to cause a red shift in the optical absorption band edge. The competition between the narrowing in the optical band gaps of the nanocomposites as a result of the red shift due to the presence of rGO and the degradation in the visible light utilization as a result of favorably absorbed incident light by rGO instead of g-C3N4 pointed out that the g-C3N4/3% rGO nanocomposite has the optimum light absorbance efficiency. The photoassisted charging tests indicated that the g-C3N4/3% rGO nanocomposite reduced the diarging potential effectively, especially at higher current densities, and improved the cyclic discharge-charge performance of the Li-ion oxygen batteries considerably.
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