Depijan M.Hantanasirisakul K.Pakawatpanurut P.Mahidol University2023-11-222023-11-222023-01-01Journal of Physics: Conference Series Vol.2602 No.1 (2023)17426588https://repository.li.mahidol.ac.th/handle/20.500.14594/91142The superior performance of the Ti3C2T x -based supercapacitor has recently gained much interest in the energy storage community. Nevertheless, its performance in most neutral electrolytes remains a challenge, plausibly due to unfavorable ion diffusion as a result of limited interlayer spacing within Ti3C2T x . Herein, protonated g-C3N4 (pg-C3N4) was composited into Ti3C2T x using layer-by-layer assembling process. The XRD measurement indicated the enlargement in the d-spacing after pg-C3N4 was introduced into Ti3C2T x . The elemental analysis found the presence of N atom within Ti3C2T x, which indicated successful incorporation of pg-C3N4. The cyclic voltammogram revealed the increase in potential window up to 1.1 V with an improved specific capacitance of 95 F g-1 at 2 mV s-1 for Ti3C2T x /pg-C3N4 in neutral MgSO4 electrolyte. Given the fact that Ti3C2T x -only electrode yielded the specific capacitance of only 77 F g-1, a better performance of the Ti3C2T x /pg-C3N4 composite could be attributed to better ion diffusion within the material. In fact, our analysis indicated that the composite showed higher degree of ion diffusion-dependent pseudocapacitive contribution when compared to Ti3C2T x .Physics and AstronomyConference PaperSCOPUS10.1088/1742-6596/2602/1/0120012-s2.0-8517658759617426596