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Hydrogen production performance of novel glycerin-based electrolytic cell
- Source :
- Renewable Energy. 167:862-868
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Mesoporous cobalt oxide/nickel foam (NF) is got by a simple chemical method, and a glycerin-based electrolytic cell is rationally assembled with CoO/NF, in which glycerin-KOH aqueous solution is used as electrolyte. Herein, the influence of anodic glycerin oxidation on cathodic hydrogen production is investigated mainly. At 1.35 V vs. reverse hydrogen electrode (RHE), CoO/NF electrode exhibits a current density of 235.71 mA cm−2 for glycerin oxidation, which is about 2.5 times higher than that over Co3O4/NF. For glycerin oxidation, the Tafel slope (189 mV dec−1) over CoO/NF is much lower, compared to that (286 mV dec−1) over Co3O4/NF, demonstrating the robust electrocatalyic reaction kinetics over CoO/NF. For glycerin-contained electrolytic cell, a cell voltage (1.672 V) is needed to reach 50 mA cm−2, which is obviously lower than that (1.975 V) for conventional electrolytic cell. It is obvious that for glycerin-contained electrolytic cell, the required cell voltage has obviously decreased by 0.303 V. This work demonstrates that the substitution of glycerin oxidation for sluggish four-electron OER reaction can greatly promote water electrolysis to hydrogen production. Moreover, this design can not only degrade environmental pollutants, but also produce clean energy, and the reported strategy is obviously environment-benign and cost-effective.
- Subjects :
- Tafel equation
060102 archaeology
Standard hydrogen electrode
Electrolysis of water
Renewable Energy, Sustainability and the Environment
Chemistry
Electrolytic cell
020209 energy
06 humanities and the arts
02 engineering and technology
Electrolyte
Anode
Chemical engineering
Electrode
0202 electrical engineering, electronic engineering, information engineering
0601 history and archaeology
Hydrogen production
Subjects
Details
- ISSN :
- 09601481
- Volume :
- 167
- Database :
- OpenAIRE
- Journal :
- Renewable Energy
- Accession number :
- edsair.doi...........ea71061dc65dcddfbef8b4771348fed9
- Full Text :
- https://doi.org/10.1016/j.renene.2020.12.004