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Updated: Sep 14, 2025
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
Polymer/Graphene Composite with Multiple Active Sites Enables Membrane-Free Decoupled Hydrogen Production in Acidic
Yuan Wei1, Shuaika Liang1, Jie Pan1
1State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620, China.
Abstract:
Decoupled water electrolysis using solid-state redox mediators (SRMs) enables spatial and temporal separation of hydrogen and oxygen production without relying on membranes. Here, a nitrogen-containing heterocyclic quinone polymer (PYTQ) was integrated with reduced graphene oxide (RGO) via vacuum-assisted filtration to synthesize the composite material (PYTQ-RGO). Benefiting from the multiple active sites for PYTQ and the strong π-π interactions between PYTQ and RGO, the composite exhibits high specific capacity and excellent stability. A membrane-free decoupled water electrolysis architecture is successfully achieved using PYTQ-RGO as a solid-state redox mediator, which could be driven by renewable energies.
