Nano Letters· 2026Q1
Layer-by-Layer Electrode Design Integrating a Macroporous Carbon-Nanotube Skeleton for an Anion-Exchange Membrane Water Electrolyzer
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- Q1SCImago
- 2026year
Short summary
A novel layer-by-layer (LbL) electrode design with a macroporous carbon nanotube (CNT) skeleton significantly enhances anion-exchange membrane water electrolysis (AEMWE) performance by enabling uniform catalyst nanoparticle distribution.
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Key points
- Developed a layer-by-layer (LbL) electrode with a macroporous carbon nanotube (CNT) skeleton for AEMWE.
- Achieved uniform distribution of NiFe (OER) and NiFeOx (HER) catalyst nanoparticles on the CNT skeleton.
- LbL electrodes showed enhanced OER activity and similar HER activity/stability compared to conventional electrodes.
- AEMWE systems with LbL electrodes exhibited improved practical performance and durability.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract Three-dimensional porous electrodes (anodes and cathodes) using only non-noble-metal electrocatalysts are important for enhancing the performance of anion-exchange membrane water electrolysis (AEMWE), contributing to reduced green-hydrogen production costs. This study designed a layer-by-layer (LbL) electrode with a macroporous carbon nanotube (CNT) skeleton for an anode and cathode by modifying the fabrication to enable a uniform distribution of catalyst nanoparticles throughout the electrode. The LbL anode and cathode, fabricated by loading NiFe and NiFeOx as oxygen (OER) and hydrogen (HER) evolution reaction catalysts, respectively, onto the CNT skeleton, resulted in macroporous electrodes with square pores. Compared to conventional electrodes with densely loaded catalysts, the LbL electrodes exhibited enhanced OER activity and similar HER activity and stability. The practical performance of AEMWE employing LbL electrodes exceeded those of CNT-based electrodes without LbL processing, and conventional electrodes. Moreover, durability data showed that the AEMWE integrating LbL electrodes maintained stable performance without significant degradation.
The authors' abstract, as published at the source. Nano Letters, 2026 · DOI ↗
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Field: Renewable Energy, Sustainability and the Environment
Renewable Energy, Sustainability and the EnvironmentEnergy