Porous Carbon Template Decorated with MOF‐Driven Bimetallic Phosphide: A Suitable Heterostructure for the Production of Uninterrupted Green Hydrogen via Renewable Energy Storage Device

Abstract

Water splitting via an uninterrupted electrochemical process through hybrid energy storage devices generating continuous hydrogen is cost‐effective and green approach to address the looming energy and environmental crisis toward constant supply of hydrogen fuel in fuel cell driven automobile sector. The high surface area metal‐organic framework (MOF) driven bimetallic phosphides (ZnP2@CoP) on top of CNT‐carbon cloth matrix is utilized as positive and negative electrodes in energy storage devices and overall water splitting. The as‐prepared positive electrode exhibits excellent specific capacitances/capacity of 1600 F g−1/800 C g−1 @ 1A g−1 and the corresponding hybrid device reveals an energy density of 83.03 Wh kg−1 at power density of 749.9 W kg−1. Simultaneously, the electrocatalytic performance of heterostructure shows overpotentials of 90 mV@HER and 204 mV@OER at current density of 10 and 20 mA cm−2, respectively in alkaline electrocatalyzer. Undoubtedly, it shows overall water splitting with low cell voltage of 1.53 V@10 mA cm−2 having faradic and solar‐to‐hydrogen conversion efficiency of 98.81% and 9.94%, respectively. In addition, the real phase demonstration of the overall water‐splitting is performed where the electrocatalyzer is connected with a series of hybrid supercapacitor devices powered up by the 6 V standard silicon solar panel to produce uninterrupted green H2.

Plasma Treatment on Cobalt Sulfide Nanoparticle/Nickel Foam Electrocatalysts for Hydrogen Evolution Reaction

“…Similar results were obtained in XPS spectra of all P-NF@CoS samples (Figures S2–S5). − Despite multiple attempts, the obtained Raman spectra yielded poor-quality results. This can be attributed to the absorption of the laser by the dark-colored samples, which led to ineffective scattering.…”

Discerning the Role of A‐Site Cation on the Efficiency and Stability of the Halide Perovskite Solid‐State Supercapacitor

“…At higher current densities, charge storage is reduced due to electrolyte ions not having enough time to infiltrate the internal pores of the active electrode material completely. [29][30][31] Because of the limited time availability to the electrolyte ions at higher current densities, the electrolyte ions can only interact with the external surfaces of the electrode material. Figure 3d compares CV curves at 5 mV s À1 for all perovskite electrodes.…”

Heterostructured electrocatalysts for the oxygen evolution reaction

“…Studies have shown that MOFs are unique porous crystalline materials considered ideal precursors for TMPs/C hybrid materials due to their large specific surface area, structural flexibility, and tunable pore structures. 155 Afshan et al 156 reported a MOF-based bimetallic phosphide heterostructure (ZnP 2 @CoP–CNT/CC) that forms a material with higher conductivity on carbon cloth. SEM images (Fig.…”