Carbonate Reduction and the Properties and Applications of Carbon Formed Through Electrochemical Deposition in Molten Carbonates: A Review

Hughes, M.; Allen, J. A.; Donne, Scott W.

doi:10.1016/j.electacta.2015.07.134

Cited by 24 publications

(20 citation statements)

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“…Reducing this potential difference would benefit the energy efficiency of electrochemical cycling between CO2 and carbon, which may result from the fast growing interests and activities in this area. [350][351][352][353][354][355][356][357][358][359][360] …”

Section: Direct Carbon Fuel Cellsmentioning

confidence: 99%

“…[348][349][350] However, the research has remained fairly quiet until recent consideration of the process for capture and utilisation of CO2. [351][352][353][354][355][356][357][358][359][360] Particularly, electrodeposition and re-oxidation of carbon in molten carbonate salts under the CO2 atmosphere have been investigated in order to close the loop of CO2-carbon cycles via the combination of molten salt electrolysis and DCFCs for energy storage. 355,356 To help understand the carbon deposition process, different salt compositions have been used to investigate the electrochemical deposition and re-oxidation of solid carbon, which are CaCl2-CaCO3-LiCl-KCl (molar ratio of 0.30:0.17:0.43:0.10) and Li2CO3-K2CO3 (molar ratio of 0.62:0.38) at different temperatures and atmospheres.…”

Section: Direct Carbon Fuel Cellsmentioning

confidence: 99%

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Electrolytes for electrochemical energy storage

Xia

et al. 2017

Mater. Chem. Front.

233

116

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Journal NameThis journal is © The Royal Society of Chemistry 20xxJ. Name., 2013, 00, 1-3 | 1 Electrolyte is a key component of electrochemical energy storage (EES) devices and its properties greatly affect the energy capacity, rate performance, cyclability and safety of all EES devices. This article offers a critical review of recent progresses and challenges in electrolyte research and development particularly for supercapacitors and supercapatteries, recharegable batteries (such as lithium-ion and sodium-ion batteries), and redox flow batteries (including fuel cells in a broad sense). The review will focus on liquid electrolytes, particularly aqueous and organic electrolytes, ionic liquids and molten salts. Influences of electrolyte properties on the performances of different EES devices are discussed in detail.

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Section: Direct Carbon Fuel Cellsmentioning

confidence: 99%

Section: Direct Carbon Fuel Cellsmentioning

confidence: 99%

Electrolytes for electrochemical energy storage

Xia

et al. 2017

Mater. Chem. Front.

233

116

View full text Add to dashboard Cite

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“…One potential method of achieving this is the synthesis of carbons through the electrolytic reduction of molten carbonate salts. [4,5,9,[23][24][25][26] This method of carbon synthesis has received considerable interest in recent years, both by this group [26][27][28] and a range of further…”

Section: Introductionmentioning

confidence: 99%

Optimized Electrolytic Carbon and Electrolyte Systems for Electrochemical Capacitors

2020

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Electrochemical reduction of a molten Li2CO3−Na2CO3−K2CO3 eutectic is used to produce highly amorphous carbon with considerable oxygen functionalization in a process focusing on the conversion of CO2 to value‐added carbon. Electrochemical characterization of materials using multiple techniques in different electrolytes allowed for the optimization of these materials as electrochemical capacitor electrodes. Variation in capacitive performance of the investigated materials has been provided based on their physical characteristics. The synthesized carbons are hybrid materials, showing both pseudocapacitive and electric double layer contributions to the total performance. Annealing under nitrogen at 800 °C is shown to widen pores in the carbon material, resulting in an increase in medium scan rate (5–10 mV.s−1) capacitance. A stable specific capacitance of 425 F.g−1 is obtained at 5 mV s−1 in 0.5 M Na2SO4 after 1000 cycles.

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“…Previous work in this area has characterized the technique as a medium temperature method of producing carbonaceous products with physical and electrochemical properties that vary considerably based on the conditions of electrodeposition. 10,[21][22][23][24][25][26][27][28][29][30] It has been demonstrated that a correlation exists between electrodeposition parameters and the structure and morphology of the resultant carbon materials. 29 In particular, it has been found that temperature 10,26,30,31 and substrate 32 affect both the morphology and physical characteristics of carbons synthesized in this manner, and that the electrolyte 27,33 and current density 34 may also have an inuence on the structure of the electrodeposited carbon.…”

Section: Introductionmentioning

confidence: 99%

“…31 A manner of converting otherwise waste CO 2 gas into value-added carbon materials is therefore highly sought aer. Beyond this, it has been shown that the carbon materials produced through molten carbonate reduction pathways act as excellent supercapacitor materials, 29,39 with specic capacitances that vary depending upon synthesis conditions. This variation in capacitance is likely the result of variation in the morphological and physical characteristics of the materials.…”

Section: Introductionmentioning

confidence: 99%