Investigation of ethanol fuel electrooxidation reaction on Ni-CeO2NRs anode electrocatalyst in alkaline media

Kazan-Kaya, Emine Sena

doi:10.1016/j.jelechem.2022.116982

Cited by 6 publications

(5 citation statements)

References 75 publications

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“…The incorporation of CeO 2 NRs improves catalytic stability through a cumulative synergetic effect. [ 107 ] Several groups have recently investigated the part of Au in boosting the EOR of Pd nanomaterials by using an electron beam to irradiate bimetallic PdAu electrocatalysts. [ 108 ] According to Geraldes et al [ 109 ] compared to pure Pd (25 mW cm −2 at 85 °C), a Pd:Au ratio of 90:10 yields the highest PD (44 mW cm −2 at 85 °C).…”

Section: Catalysts For Defc Applicationsmentioning

confidence: 99%

Direct Ethanol Fuel Cell for Clean Electric Energy: Unravelling the Role of Electrode Materials for a Sustainable Future

Bishnoi,

Mishra,

Siwal

et al. 2024

Adv Energy and Sustain Res

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Direct ethanol fuel cells (DEFCs) are better than others in commercially used FCs due to easy availability, less toxicity, and C‐2‐type alcohol. Ethanol has a high theoretical efficiency of 97% and is a safe, plentiful, and renewable resource that can be stored and controlled using the infrastructure that is in place now. Nevertheless, low functional efficiencies and the release of carbon dioxide (CO2), acetaldehyde, and byproducts of acetic acid must be addressed if DEFCs are to grow and become more commercially viable. To overcome these problems, new anode and cathode catalysts are needed, so this review article discusses the introduction of FCs with their structure, working and mechanism. Further, the report covers various types of FC catalysts, and their application in FC technology is explained. The role of the catalyst (such as anode and cathode), similarities and differences between Pt/Pd‐based catalysts, and the importance of supporting materials (such as carbon, transition metal dichalcogenides, MXene, and black phosphorus‐based materials) in DEFCs are described. In addition, the applications, advantages, and disadvantages of the DEFCs are discussed. Finally, the proposed theme is concluded with the existing challenges in this field and the future prospect of DEFCs.

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Section: Catalysts For Defc Applicationsmentioning

confidence: 99%

Direct Ethanol Fuel Cell for Clean Electric Energy: Unravelling the Role of Electrode Materials for a Sustainable Future

Bishnoi,

Mishra,

Siwal

et al. 2024

Adv Energy and Sustain Res

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“…Bartolomeo and co-workers employed a ZrO 2 /NiO/rGO-based catalyst and were successful in obtaining a current density of 17.3 mA cm –2 along with the formation of acetic acid as the end product . Kazan-Kaya and Bayramoğlu synthesized Ni CeO 2 nanorods that were fairly effective for cocatalyzing ethanol oxidation, displaying a current density of 14.02 mA cm –2 …”

Section: Introductionmentioning

confidence: 99%

“…Using 3 d -based transition metals, − to date, majority of the research has focused on heterogeneous − (typically heterometallic) electrocatalysts, which also constitute the bulk of the working electrode while operating in tandem with Pt-based − counter electrodes. Considering the fact that the precursors for such systems are simple metal salts, it is imperative that one obtains a systematic and fundamental understanding of their activity in solution under homogeneous conditions while using a non-noble-based (say carbon-based) electrode assembly for alcohol electro-oxidation.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Oxidation of Methanol and Ethanol with 3d-Metal Based Anodic Electrocatalysts in Alkaline Media Using Carbon Based Electrode Assembly

Tanwar,

Narjinari,

Sharma

et al. 2024

Inorg. Chem.

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Homogeneous electrocatalytic systems based on readily available, earth-abundant, inexpensive base metals Ni, Co, and Cr have been formulated for the electro-oxidation of alcohols (methanol and ethanol) that constitute a key half-cell component of direct alcohol fuel cells (DAFCs). Notably, excellent results were obtained for both methanol as well as ethanol electrooxidation while operating with a half-cell assembly based on allnon-noble working and counter electrode systems consisting of glassy carbon and graphite rod, respectively. Using NaOH as the supporting electrolyte, Ni/Co/Cr metal salts and their bis-(iminopyridine) complexes have been used as anodic electrocatalysts for the alcohol half-cell reactions, and among them, catalytic systems based on Co outperformed the corresponding systems based on Ni and Cr. The system comprising CoCl 2 .•6H 2 O [10 mM] + NaOH [6 M] at room temperature emerged as the best electrocatalyst for both methanol [5 M] electro-oxidation (ca. 522.5 ± 13.5 mA cm −2 at 1.4 V) and ethanol [5 M] electro-oxidation (ca. 209 ± 25 mA cm −2 at 1.34 V). It was observed that regardless of the starting alcohol, the end product is carbon dioxide, all of which gets trapped as sodium carbonate (up to 97% yield), thereby mitigating any possible hazards of greenhouse gas emission. Inferences obtained from FETEM, FESEM, and EDS analysis of both the electrolyte solution and residues deposited on the electrode surface provide evidence for the mostly homogeneous nature of the reaction mixture with the molecular catalyst being the major contributor toward the electrocatalytic activity apart from the minor role played by trace heterogeneous particles. The current cell assembly operating with non-noble working and counter electrodes utilizing a catalytic system based on an earth-abundant, base metal salt/complex that not only results in good half-cell current densities for high-energy power-source DAFCs but also generates high-value sodium carbonate offers an exciting avenue.

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“…The results displayed an enhancement of EEO activity with a smaller onset potential and a higher EEO maximum current density. In alkaline medium, several studies have also demonstrated the ability of rare-earth metals to promote Pt, Pd, or Ni EEO activity by the electronic (further boosted by the oxygen vacancies present in some REO) and bifunctional effects [14][15][16][17][18][19][20][21], extending the promotional effect of the REO to the whole range of pH.…”

Section: Introductionmentioning

confidence: 99%

The Promotional Effect of Rare Earth on Pt for Ethanol Electro-Oxidation and Its Application on DEFC

et al. 2023

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Bimetallic Pt3Eu/C, Pt3La/C, and Pt3Ce/C electrocatalysts have been prepared, characterized, and tested for ethanol electro-oxidation (EEO). The materials were synthesized by chemical reduction with NaBH4, rendering nanosized particles with actual compositions close to the nominals and no alloy formation. X-ray photoelectron spectroscopy (XPS) confirmed that the auxiliary rare-earth metals were present on the surface in oxide form. The electrochemical analyses in acid and alkaline EEO evidenced that, compared to Pt/C, the addition of rare earth metals in the form of oxides reduced the onset potential, increased the current density, and enhanced the stability. The results were fully confirmed in the DEFC single-cell measurements. Finally, the presence of rare earth metals in the oxidized form increased the percentage of acetic acid as the final product, making the electrocatalysts more selective and efficient than Pt/C, where acetaldehyde was the main product.

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Investigation of ethanol fuel electrooxidation reaction on Ni-CeO2NRs anode electrocatalyst in alkaline media

Cited by 6 publications

References 75 publications

Direct Ethanol Fuel Cell for Clean Electric Energy: Unravelling the Role of Electrode Materials for a Sustainable Future

Direct Ethanol Fuel Cell for Clean Electric Energy: Unravelling the Role of Electrode Materials for a Sustainable Future

Electrocatalytic Oxidation of Methanol and Ethanol with 3d-Metal Based Anodic Electrocatalysts in Alkaline Media Using Carbon Based Electrode Assembly

The Promotional Effect of Rare Earth on Pt for Ethanol Electro-Oxidation and Its Application on DEFC

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