Electrocatalysis and Photocatalysis in Redox Flow Batteries

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: 31 July 2025 | Viewed by 522

Special Issue Editor


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Guest Editor
Department of Chemistry, Stanford University, Stanford, CA 94305, USA
Interests: photocatalysis; electrocatalysis; organic materials; redox flow batteries; reactive oxygen species
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Special Issue Information

Dear Colleagues,

Redox flow batteries (RFBs) are a strong player in the large-scale energy storage of green grids due to their decoupling of energy and power, decade-long cycle life, and low risk of fire. However, the electrode kinetics are usually slow, limiting their wide deployment. Electrocatalytic materials are needed to reduce the reaction barrier. The RFBs can be further combined with photoelectrochemical cells to directly convert and store solar energy in soluble redox species, rather than the hard-to-store gaseous products in solar water splitting cells. We hope that this Special Issue will provide useful information for researchers and encourage their involvement in this field.

Dr. Penghui Ding
Guest Editor

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Keywords

  • redox flow battery
  • solar redox flow battery
  • electrocatalysis
  • photocatalysis
  • photoelectrochemical
  • reaction kinetics

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Published Papers (1 paper)

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Research

12 pages, 2721 KiB  
Article
Conjugated Polyaniline–Phytic Acid Polymer Derived 3D N, P-Doped Porous Carbon as a Metal-Free Electrocatalyst for Zn–Air Batteries
by Wanting Xiong, Yifan Kong, Jiangrong Xiao, Tingting Wang and Xiaoli Chen
Catalysts 2025, 15(7), 683; https://doi.org/10.3390/catal15070683 - 14 Jul 2025
Viewed by 144
Abstract
The development of cost-effective and scalable air/oxygen electrode materials is crucial for the advancement of Zn–air batteries (ZABs). Porous carbon materials doped with heteroatoms have attracted considerable attention in energy and environmental fields because of their tunable nanoporosity and high electrical conductivity. In [...] Read more.
The development of cost-effective and scalable air/oxygen electrode materials is crucial for the advancement of Zn–air batteries (ZABs). Porous carbon materials doped with heteroatoms have attracted considerable attention in energy and environmental fields because of their tunable nanoporosity and high electrical conductivity. In this work, we report the synthesis of a three-dimensional (3D) N and P co-doped porous carbon (PA@pDC-1000), derived from a conjugated polyaniline–phytic acid polymer. The cross-linked, rigid conjugated polymeric framework plays a crucial role in maintaining the integrity of micro- and mesoporous structures and promoting graphitization during carbonization. As a result, the material exhibits a hierarchical pore structure, a high specific surface area (1045 m2 g−1), and a large pore volume (1.02 cm3 g−1). The 3D N, P co-doped PA@pDC-1000 catalyst delivers a half-wave potential of 0.80 V (vs. RHE) and demonstrates a higher current density compared to commercial Pt/C. A primary ZAB utilizing this material achieves an open-circuit voltage of 1.51 V and a peak power density of 217 mW cm−2. This metal-free, self-templating presents a scalable route for the generating and producing of high-performance oxygen reduction reaction catalysts for ZABs. Full article
(This article belongs to the Special Issue Electrocatalysis and Photocatalysis in Redox Flow Batteries)
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