Can ethanol be used as electrolyte in zinc-air flow batteries?
This work demonstrated the positive effects of the addition of ethanol to 8 M KOH aqueous solution as the electrolyte in zinc-air flow batteries. Ethanol can be used as an electrolyte in these batteries, with its utilization studied for a range of different concentrations (0–50% v/v).
Do ethanol electrolytes improve battery performance?
The battery using 10% v/v ethanol electrolyte exhibited 470 mAh/g and 576 mWh/g, which is a 30% improvement in specific capacity and 16% improvement in specific energy compared to batteries without ethanol. The batteries with the electrolytes containing ethanol showed significantly higher discharge capacity and energy.
How does ethanol affect battery discharge potential?
Though the addition of ethanol slightly decreased the discharge potential of the batteries, a significant enhancement of discharge capacity and energy density could be sought.
What is the optimal concentration of ethanol for a battery?
Galvanostatic discharge results indicated that the battery using 10% v/v ethanol electrolyte exhibited the highest electrochemical performance with 30% increase in discharge capacity and 16% increase in specific energy over that of KOH electrolyte without ethanol.
What are the advantages of electrolyte with ethanol additives?
Consequently, the electrolyte with ethanol additives boosts a high reversibility of Zn deposition, long-term durability, as well as superior Zn 2+ diffusibility in both Zn half-cells (Zn||Cu and Zn||Zn batteries) and Zn full cells (Zn||PTCDA and Zn||VO 2 batteries).
Which ethanol electrolyte is best for a battery?
Galvanostatic discharge results indicated that the battery using 10% v/v ethanol electrolyte exhibited the highest electrochemical performance with a 30% increase in discharge capacity and a 16% increase in specific energy over that of KOH electrolyte without ethanol.
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Ethanol as an electrolyte additive for alkaline zinc-air flow ...
Zinc-air flow batteries exhibit high energy density and offer several appealing advantages. However, their low efficiency of zinc utilization resulted from passivation and corrosion of the zinc anodes has limited their broad application. In this work, ethanol, which is ...
Get Price →Redox flow battery that uses complexes of cobalt and iron …
A redox flow battery that uses metal complexes with amino-alcohol ligands as the electroactive species in alkaline electrolytes to store electrical energy. The battery includes a first and a second electrolyte storage unit that each includes a metal complex selected from transition metals with an amino-alcohol ligand as an electroactive species in an alkaline electrolyte.
Get Price →Poly (vinylidene fluoride) porous membranes precipitated in …
Poly(vinylidene fluoride) (PVDF) porous membranes with tunable morphology are facilely prepared via dual-coagulation bath by phase inversion method and investigated in vanadium flow battery (VFB). Water/ethanol solutions with different compositions are selected as the coagulation baths and the effect of water/ethanol including content ratio and immersion …
Get Price →Ethanol as an electrolyte additive for alkaline zinc-air flow ...
Zinc-air flow batteries exhibit high energy density and offer several appealing advantages. However, their low efficiency of zinc utilization resulted from passivation and corrosion of the zinc anodes has limited their broad application. In this work, ethanol ...
Get Price →Ethanol as an electrolyte additive for alkaline zinc-air flow batteries
Performances of the zinc-air flow batteries with the electrolyte circulation rate of 20 mL/s: (a) polarization characteristics, and (b) galvanostatic discharge profiles of the batteries using 0, 5 ...
Get Price →Ethanol as an electrolyte additive for alkaline zinc-air flow batteries ...
This work aims at enhancing electrochemical performances of zinc-air flow batteries by introducing ethanol in 8 M KOH aqueous electrolyte to suppress corrosion and passivation effects of granular zinc anodes. Various percentages of ethanol (0–50% v/v) were investigated to identify the optimum ratio of KOH/Ethanol.
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Flow battery (FB) is a promising electrochemical technology that provides a safe and scalable energy storage solution and helps to effectively deliver electricity at the grid scale [3], [4]. ... The precipitate was washed with deionized water and ethanol for three times, respectively. The wet powder was dried in a vacuum oven at 60 °C for 12 h.
Get Price →Modular dimerization of organic radicals for stable and dense flow ...
Aqueous organic redox flow batteries (AORFBs) hold promise for safe, sustainable and cost-effective grid energy storage. However, developing catholyte redox molecules with the desired stability ...
Get Price →Poly(vinylidene fluoride) porous membranes precipitated in ...
Poly(vinylidene fluoride) (PVDF) porous membranes with tunable morphology are facilely prepared via dual-coagulation bath by phase inversion method and investigated in vanadium flow battery (VFB). Water/ethanol solutions with different compositions are selected as the coagulation baths and the effect of water/ethanol including content ratio and immersion …
Get Price →Ethanol as an electrolyte additive for alkaline …
This work aims at enhancing electrochemical performances of zinc-air flow batteries by introducing ethanol in 8 M KOH aqueous electrolyte to …
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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 …
Get Price →Dual‐Function Electrolyte Additive Design for Long Life …
Alkaline zinc-based flow batteries (AZFBs) have emerged as a promising electrochemical energy storage technology owing to Zn abundance, high safety, and low cost. However, zinc dendrite growth and the formation of dead zinc greatly impede the development of AZFBs. Herein, a dual-function electrolyte additive strategy is proposed to regulate ...
Get Price →Ethanol as Solvent Additives with Competitive …
Consequently, the electrolyte with ethanol additives boosts a high reversibility of Zn deposition, long-term durability, as well as superior Zn 2+ diffusibility in both Zn half-cells (Zn||Cu and Zn||Zn batteries) and Zn full cells …
Get Price →Discharge profile of a zinc-air flow battery at various electrolyte ...
In this regard, zinc-air flow batteries (ZAFBs) are seen as having the capability to fulfill this function. In flow batteries, the electrolyte is stored in external tanks and circulated...
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The current research on flow boiling cooling mainly focuses on the cold plate BTMS [16], [17], in which the convective and bubble boiling heat transfer occur in mini/micro-channels of the cold plates [18], instead of directly on the battery wall.Wei et al. [19] studied the effects of contact resistance and contact area between the refrigerant channel and the battery wall on …
Get Price →A polybenzimidazole-covalent organic framework hybrid …
Vanadium flow battery (VFB) is regarded as an ideal large-scale energy storage equipment due to its low cost, long cycle life, ... The powder collected was then washed with DI water and ethanol for several times to obtain wet products and dried at …
Get Price →Advances in the design and fabrication of high-performance flow battery ...
These novel electrode structures (dual-layer, dual-diameter, and hierarchical structure) open new avenues to develop ECF electrodes that can considerably improve the …
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We show how strategically designed proton regulators can accelerate alcohol oxidation and thus enhance battery kinetics. Fluorenone-based flow batteries with the organic …
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Recently, the T.S. Zhao research group at The Hong Kong University of Science and Technology proposed an electrically rechargeable liquid fuel (e-fuel) concept, and it has attracted worldwide attention. 38, 39 Radically different from conventional liquid fuels such as methanol and ethanol, this e-fuel is typically made of various electroactive species, including inorganic materials (e.g ...
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Zinc-iodine flow battery (ZIFB) holds great potential for grid-scale energy storage because of its high energy density, good safety and inexpensiveness. However, the …
Get Price →The Influence of Dimethyl Sulfoxide as Electrolyte Additive …
The present work describes the effects of dimethyl sulfoxide (DMSO) in KOH aqueous electrolyte on the performance of a zinc-air flow battery. Aqueous electrolytes containing 7 M KOH and (0 to 20 ...
Get Price →Ethanol as an electrolyte additive for alkaline zinc-air flow ...
In this work, ethanol, which is considered as an environmentally friendly solvent, is examined as an electrolyte additive to potassium hydroxide (KOH) aqueous electrolyte to …
Get Price →Proton-regulated alcohol oxidation for high-capacity ketone-based flow ...
Redox flow batteries are promising for long-duration energy storage. The lifetime of organic molecules has been a concern. In addition, there are limited choices available for kinetic optimization. In this work, the demonstrated battery record-lifetime assured that the promising future of organics could be employed in flow batteries. Furthermore, the demonstrated …
Get Price →Ethanol as an electrolyte additive for alkaline zinc-air flow batteries ...
Zinc-air flow batteries exhibit high energy density and offer several appealing advantages. However, their low efficiency of zinc utilization resulted from passivation and corrosion of the zinc anodes has limited their broad application. ... galvanostatic discharge results indicated that the battery using 10% v/v ethanol electrolyte exhibited ...
Get Price →International Journal of Energy Research
To boost the performance of the iron-chromium redox flow battery (ICRFB), opting an appropriate proton exchange membrane (PEM) as the core component of ICRFB is of great importance. For the purpose, in this paper, various widely adopted commercial Nafion membranes with a different thickness of 50 μm (Nafion 212, N212), 126 μm (N115), and 178 ...
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The low Reynolds number of the flow ensured a stable interface between the anolyte and catholyte, so that the Al corrosion in methanol anolyte was greatly inhibited. ... the ethanol gel battery achieved a high specific capacity of 2118 mAh g −1, which was 71.1% of the theoretical value (2980 mAh g −1) and 2.7 times of the water gel case. In ...
Get Price →Ethanol as Solvent Additives with Competitive Effect for High …
Aqueous zinc-ion batteries are emerging as promising sustainable energy-storage devices. However, their cyclic stability is still a great challenge due to the inevitable parasitic reaction and dendrite growth induced by water. Herein, a cosolvent strategy based on competitive effect is proposed to address the aforementioned challenges. Ethanol with a higher Gutmann …
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KOH in ethylene glycol/ethanol solution is a promising anolyte being more environmentally friendly, less toxic and providing favorable electrochemical performance. Metal–air batteries (MABs) are among the …
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