DataVXACS Applied Energy MaterialsPaper
journal article·2020-08-24

Unitized Regenerative Alkaline Microfluidic Cell Based on Platinum Group Metal-Free Electrode Materials

Carlos A. Campos-Roldán, Haihong Zhong, Sreekuttan M. Unni, Rosa de Guadalupe González-Huerta, Yongjun Feng, Nicolas Alonso-Vante

ACS Applied Energy Materials· Volume 3· Issue 8
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Source abstract

Abstract

The performance of platinum group metal (PGM)-free bifunctional electrodes, in a regenerative H2/O2 microfluidic cell, is examined. The system is operated in an alkaline environment at 25 °C. Multiwalled carbon nanotube (CNT)-supported Ni-based nanostructures, NiO–Ni/CNT, were used to catalyze the hydrogen evolution reaction (HER) and the hydrogen oxidation reaction (HOR), whereas N-doped carbon nanohorn-supported NiFeOx–CoNy (NiFeOx–CoNy/NCNH) served as oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalysts. The system NiO–Ni/CNT||NiFeOx–CoNy/NCNH, at 25 °C, showed an interesting performance in fuel cell mode (ca. 15 mW cm–2 at the maximum peak) and in electrolyzer mode (ca. 102 mW cm–2 at 50 mA cm–2). The round-trip efficiency, after five consecutive operating cycles, decreased from 44.76 to 39.52%.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

IC2MP, UMR-CNRS 7285, University of Poitiers, 4 Rue Michel Brunet, 86022 Poitiers, France

Instituto Politécnico Nacional-ESIQIE, Laboratorio de Electroquímica, UPALM, 07738 CDMX, México

State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Beijing 100029, China

CSIR-Central Electrochemical Research Institute Madras Unit, CSIR Madras Complex, Taramani, Chennai 600113, India

Funding

European Regional Development Fund · Consejo Nacional de Ciencia y Tecnolog?a · China Scholarship Council · R?gion Nouvelle Aquitaine

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