@article{Wang2025, 
author = {Xin Wang and Xingen Lin and Wanyu Shen and Yimin Li and Yi Tan and Zihan Wang and Peng Jiang and Song Gong and Kong Chen and Yu Zhang and Yuen Wu},
title = {Highly portable electrochemical oxygen removal device for microenvironmental low-oxygen control},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {2},
pages = {94907179},
keywords = {oxygen reduction reaction (ORR), low-oxygen condition, oxygen level control for microenvironment, electrochemical oxygen removal},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907179},
doi = {10.26599/NR.2025.94907179},
abstract = {Low-oxygen (O2) environments are essential in various research and application fields, yet traditional methods like nitrogen flushing or chemical O2 absorbers face challenges in high equipment cost and low controllability. This study introduces a novel electrochemical oxygen removal (EOR) controller, offering a lightweight, low-cost, and precise low-O2 control solution. The self-powered EOR controller uses a sacrificial anode to drive the cathodic oxygen reduction reaction (ORR), efficiently consuming environmental O2 to reduce its level, thus eliminating the requirements of external gas or power sources. By integrating a single-atom ORR catalyst and flexible design, the device achieves a substantial reduction in weight and cost. The incorporation of electronic components for the EOR controller, including a switch for reaching targeted O2 concentration and a fixed resistor for O2 removal rate regulation, enables multi-dimensional O2 removal control. The system also realizes the O2 concentration estimation in real-time with ±1% accuracy (within the 21%–1% range) by calculating electron transfers. The EOR controller’s effectiveness is validated in plant hypoxia stress experiments, demonstrating precise O2 level adjustments and its potential across various applications requiring controlled hypoxic conditions.}
}