Technical feasibility of a proton battery with an activated carbon electrode

Heidari, Shahin; Mohammadi, Saeed Seif; Oberoi, Amandeep Singh; Andrews, John

doi:10.1016/j.ijhydene.2018.01.153

Cited by 32 publications

(22 citation statements)

References 28 publications

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“…The charging capacity of the cell was found to be 666.9 mAh/g, which is equivalent to 2.47 wt%, and is significantly higher than reported in literature published in 2018 [15]. The discharging capacity of the cell was found to be 661.5 mAh/g, which is equivalent to 2.45 wt%, and higher than the reported literature of 2018 [15]. US DOE target of hydrogen in terms of wt% is 4.0 wt% for single use and 3.0% for rechargeable [26].…”

Section: Discussioncontrasting

confidence: 51%

“…Whereas during desorption, electrical load was applied across the cell. The charging capacity of the cell was found to be 666.9 mAh/g, which is equivalent to 2.47 wt%, and is significantly higher than reported in literature published in 2018 [15]. The discharging capacity of the cell was found to be 661.5 mAh/g, which is equivalent to 2.45 wt%, and higher than the reported literature of 2018 [15].…”

Section: Discussionmentioning

confidence: 51%

“…However, no sign of electrochemical hydrogen storage was reported by Jazaeri with an explanation that nafion (chemically known as perfluorosulfonic acid), which served as the proton conducting medium within the activated carbon electrode, failed to penetrate in aC due to its larger molecular size [14]. Therefore, further research focused on the use of liquid proton conducting mediums within the porous storage electrodes [15]. Heidari S. et al in 2018 reported on achieving nearly 1 wt% of electrochemical hydrogen storage in an acid-soaked aC electrode during charging and 0.8 wt% during discharging [15].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, further research focused on the use of liquid proton conducting mediums within the porous storage electrodes [15]. Heidari S. et al in 2018 reported on achieving nearly 1 wt% of electrochemical hydrogen storage in an acid-soaked aC electrode during charging and 0.8 wt% during discharging [15]. As per the literature [16][17][18][19][20], multi-walled carbon nanotubes (MWCNT)is a form of carbon that has potential to store hydrogen, but its technical feasibility for electrochemical hydrogen storage within a proton battery or a modified URFC is yet to be proven.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

2019

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For sustainable and incremental growth, mankind is adopting renewable sources of energy along with storage systems. Storing surplus renewable energy in the form of hydrogen is a viable solution to meet continuous energy demands. In this paper the concept of electrochemical hydrogen storage in a solid multi-walled carbon nanotube (MWCNT) electrode integrated in a modified unitized regenerative fuel cell (URFC) is investigated. The method of solid electrode fabrication from MWCNT powder and egg white as an organic binder is disclosed. The electrochemical testing of a modified URFC with an integrated MWCNT-based hydrogen storage electrode is performed and reported. Galvanostatic charging and discharging was carried out and results analyzed to ascertain the electrochemical hydrogen storage capacity of the fabricated electrode. The electrochemical hydrogen storage capacity of the porous MWCNT electrode is found to be 2.47 wt%, which is comparable with commercially available AB5-based hydrogen storage canisters. The obtained results prove the technical feasibility of a modified URFC with an integrated MWCNT-based hydrogen storage electrode, which is the first of its kind. This is surelya step forward towards building a sustainable energy economy.

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Section: Discussioncontrasting

confidence: 51%

Section: Discussionmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

2019

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“…Recent reports on the successful sol-gel synthesis of ZnO/ZnO:H and CuO/CuO:H phases suggested possible application of these pairs as electrode materials for proton conduction [1,2] [9,10]. Till date, there seems to be no report on the possible use of cheap and available transition metal oxides and their hydrogenated forms for proton battery systems.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Impedance of Hydrogenated Phases of ZnO and CuO Nanoparticles for Electrode Applications

Menegbo

Konne

Boisa

2020

AJOPACS

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The Electrochemical Impedance Spectroscopy (EIS) measurements of Sol-gel synthesized ZnO, CuO and their respective hydrogenated phases (ZnO:H and CuO:H) for a proton-type battery model has been reported for the first time. The XRD patterns confirmed that CuO and ZnO were phase pure with minor impurities. However, that of CuO:H showed mixed phases of CuO and Cu2O with the later appearing prominent. The estimated particle sizes of ZnO, ZnO:H, CuO and CuO:H obtained using Scherrers’ equation were 17.83, 17.75, 21.63 and 15.42 nm respectively, showing remarkable particle size reductions upon hydrogenation as oxygen vacancies were substituted with smaller hydrogen ions. Nyquist plots from the EIS experimental data recorded over a frequency range of 100 kHz – 5 mHz showed expected flat semicircles at the high frequency region and straight lines at the low frequency regions while resistance estimations from the intercepts of the Bode plots were 12.10, 7.80, 16.00 and 10.80 Ω for ZnO, ZnO:H, CuO and CuO:H respectively. It also indicated high gain margins suggesting impressive electrochemical properties for battery applications.

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Challenges and Opportunities for Proton Batteries: From Electrodes, Electrolytes to Full‐Cell Applications

Wu,

Guo,

Zhao

2024

Adv Funct Materials

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Proton batteries have emerged as a promising solution for grid‐scale energy storage benefiting their high safety and abundant raw materials. The battery chemistry based on proton‐ions is intrinsically advantageous in integrating fast diffusion kinetics and high capacities, thus offering great potential to break through the energy limit of capacitors and the power limit of traditional batteries. Significant efforts have been dedicated to advancing proton batteries, leading to successive milestones in recent years. Herein, the recent progress of proton batteries is summarized and insights into the challenges in electrodes, electrolytes and future opportunities for enhancing full‐cell applications are provided. The fundamentals of electrochemical proton storage and representative faradaic electrodes are discussed, delving into their current limitations in mechanism studies and electrochemical performances. Subsequently, the classification, challenges, and strategies for improving protonic electrolytes are addressed. Finally, the state‐of‐the‐art proton full‐cells are explored, and views on the rational design of proton battery devices for achieving high‐performance aqueous energy storage are offered.

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Technical feasibility of a proton battery with an activated carbon electrode

Cited by 32 publications

References 28 publications

Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

Electrochemical Impedance of Hydrogenated Phases of ZnO and CuO Nanoparticles for Electrode Applications

Challenges and Opportunities for Proton Batteries: From Electrodes, Electrolytes to Full‐Cell Applications

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