Pyridinic N-Doped Carbon Cloth Electrode

High Discharge Capacity

Targeted pyridinic nitrogen doping in carbon cloth electrode significantly enhances Cr(III)/Cr(II) redox kinetics in iron-chromium flow batteries.

Jinfeng, Yi · Zeng, Senwei · Runfa, Zhao · Guangfu, Wu · Zhi, Liu · Zhou, Tianhang · Xu, Chunming · Guo, Jia · Xu, Quan · Niu, Yingchun

Advanced Functional Materials 2026

Specifications

Discharge Capacity

{'zh': '689.3', 'en': '689.3'} mAh

Energy Efficiency

{'zh': '72.83', 'en': '72.83'} %

Cycling Stability

{'zh': '500', 'en': '500'} cycles

Advantages

Accelerates chromium redox kinetics

The pyridinic-N configuration strengthens the adsorption of Cr(H2O)5Cl2+ and reduces charge transfer resistance, directly enhancing the rate-limiting Cr(II)/Cr(III) kinetics.

Eliminates precious metal catalysts

An eco-friendly urea precursor is used to construct active sites, avoiding the cost and resource constraints of precious-metal catalysts.

Simple and scalable synthesis

The impregnation-calcination method has low equipment requirements and is suitable for batch preparation, facilitating scale-up to commercial electrode production.

Applications

• Flow Batteries：Directly used as electrode in iron-chromium flow batteries to boost performance and efficiency.
• Grid-Scale Energy Storage：High capacity and stable cycling meet grid-scale energy storage needs.
• Carbon Electrodes：Urea-doped carbon cloth offers a new route for functionalized carbon electrodes.
• Electrocatalysts：Pyridinic nitrogen acts as a metal-free active site to catalyze chromium redox.