Related Experiment Video
Updated: Jan 12, 2026
Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
Published on: April 10, 2015
Ternary nanocomposite ReMIL-CN (ReSe2@MIL-53(Fe)@g-C3N4) for energy storage and electroactive integrated H2O2 sensor
Sohail Mumtaz1, Sameerah I Al-Saeedi2, Saba Khalil3
1Department of Chemical and Biological Engineering, Gachon University 1342 Seongnamdaero, Sujeong-gu Seongnam-si 13120 Republic of Korea.
None:
Integrated electrochemical systems capable of simultaneous charge storage and biochemical sensing response have gained prominence in modern materials science and biomedical engineering by offering multifunctionality for next-generation smart devices. The present comprehensive study is focused on the synthesis and characterization of a ternary nanocomposite material, focusing on its applications in integrated electrode systems for BHSCs and hydrogen peroxide (H2O2) sensing. The synthesized ReMIL-CN (ReSe2@MIL-53(Fe)@g-C3N4) nanocomposite exhibits an average crystallite size of 27.27 nm, a specific surface area of 154 m2 g-1, and a specific pore volume of 0.022 cm3 g-1. The ReMIL-CN electrode offers maximum specific capacities (Q s) of 1925.5 C g-1 in a three-electrode testing setup and 423 C g-1 in a ReMIL-CN//AC full-cell setup. The values of the oxidation and reduction diffusion coefficients (D oxidation and D reduction) of the ReMIL-CN compound are 4.59 × 10-8 m2 s-1 and 1.45 × 10-8 m2 s-1, respectively. The highest obtained values of the energy density (E d) and power density (P d) are 50 Wh kg-1 and 2060 W kg-1, respectively. The ReMIL-CN//AC hybrid device demonstrates high stability response, with 95% capacity retention, 90% columbic efficiency, and 90% and 84% charge-discharge time retention over a prolonged period of 10 000 repeated cycles. The measured b-values of 0.59, 0.68, and 0.70 suggest the hybrid-natured operational mechanism of the ReMIL-CN//AC device. Moreover, the present composite-based electrode exhibits a sensitivity of S = 0.185 μA μM-1 cm2 with a linear operational range of 50-1000 μM for the H2O2 detection system. The device maintains 95% signal stability after 1000 cycles, with an LOD of 0.1 μM, a linear regression value of R 2 = 0.998, and a minimal response time of less than 3 seconds, demonstrating the excellent selectivity of the device. The outstanding electrochemical charge storage and sensing capabilities of this ternary nanomaterial enable its integration into real-time, self-powered bioelectrochemical monitoring for next-generation portable and wearable bioelectronics.
