Electrolytic Properties of Tetramethylammonium Compound in Highly Concentrated Solutions and Its Application to Electric Double-Layer Capacitors

Nambu, Noritoshi; Takahashi, Ryōsuke; Suzuki, Keita; Sasaki, Yukio

doi:10.5796/electrochemistry.81.811

Cited by 14 publications

(5 citation statements)

References 10 publications

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“…Therefore, a 1 M electrolyte solution provides enough anions for 10 mg of graphite to accumulate in a coin cell. In contrast, the utilization of highly concentrated electrolyte solutions (several mol L –1 ) has achieved remarkable improvement in the performance of some electric energy storage devices. − This was generally associated with the diet of ion solvation. Recently, a similar beneficial effect on dual-ion batteries has also been found, ,, and it does work in this study.…”

Section: Resultsmentioning

confidence: 99%

Flame-Retardant Electrolyte Solution for Dual-Ion Batteries

Zhang

Huang

Fan

et al. 2019

ACS Appl. Energy Mater.

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The flammability of organic electrolyte solutions has a safety risk during the large-scale application of energy storage devices. Therefore, it is essential to suppress the flammability of organic electrolyte solutions. In this article, the flame-retardant electrolyte solution of 3 M LiPF 6 -ethyl methyl carbonate (EMC)/trimethyl phosphate (TMP) (7:3 by vol) has been applied in a Li/graphite dual-ion battery. Both the initial-cycle discharge capacity (almost 100 mAh g −1 ) and capacity retention rate (92.3% after 450 cycles) surpass those for the battery using 1 M LiPF 6 -EMC. Besides, the burning times of the above electrolyte solutions are 6 and 66 s, respectively. Conventional electrochemical tests, ex situ X-ray diffraction, and nuclear magnetic resonance have been carried out to explore the influences of TMP on PF 6 − in EMC/TMP mixed solvents.

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Section: Resultsmentioning

confidence: 99%

Flame-Retardant Electrolyte Solution for Dual-Ion Batteries

Zhang

Huang

Fan

et al. 2019

ACS Appl. Energy Mater.

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“…Several authors pointed out that these fluoro-complex salts might be hydrolyzed to generate highly toxic hydrogen fluoride (HF). 146,229 In addition to the organic cations, organic salts based on the inorganic cations, such as Li + , 215,230,231 Na + , 151 and Mg 2+ , 232 have also attracted attention. 228 Changing bis(oxalato)borate anions to asymmetric difluoro(oxalato)borate anions was found to increase the solubility of the salts.…”

Section: Exploration Of New Conducting Saltsmentioning

confidence: 99%

“…228 Changing bis(oxalato)borate anions to asymmetric difluoro(oxalato)borate anions was found to increase the solubility of the salts. 146,229 In addition to the organic cations, organic salts based on the inorganic cations, such as Li + , 215,230,231 Na + , 151 and Mg 2+ , 232 have also attracted attention. As mentioned previously, organic electrolytes based on the lithium salts have been widely used in the pseudocapacitors and hybrid ESs such as LICs due to the small ionic size of Li + .…”

Section: Exploration Of New Conducting Saltsmentioning

confidence: 99%

A review of electrolyte materials and compositions for electrochemical supercapacitors

et al. 2015

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Electrolytes have been identified as some of the most influential components in the performance of electrochemical supercapacitors (ESs), which include: electrical double-layer capacitors, pseudocapacitors and hybrid supercapacitors. This paper reviews recent progress in the research and development of ES electrolytes. The electrolytes are classified into several categories, including: aqueous, organic, ionic liquids, solid-state or quasi-solid-state, as well as redox-active electrolytes. Effects of electrolyte properties on ES performance are discussed in detail. The principles and methods of designing and optimizing electrolytes for ES performance and application are highlighted through a comprehensive analysis of the literature. Interaction among the electrolytes, electro-active materials and inactive components (current collectors, binders, and separators) is discussed. The challenges in producing high-performing electrolytes are analyzed. Several possible research directions to overcome these challenges are proposed for future efforts, with the main aim of improving ESs' energy density without sacrificing existing advantages (e.g., a high power density and a long cycle-life) (507 references).

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“…Other salts are also investigated, as LiBF 4 and tetramethylammonium (TMABF 4 ), which present smaller cations, so the electric double-layer could host more cations and then increase capacitance. However, the solubility of these salts is lower than TEABF 4 (Nambu et al 2013). Another strategy is changing the anion BF 4 for bis(oxalato)borate or difluoro(oxalato)borate, increasing the solubility of the TMA + salt in propylene carbonate (PC) (Nanbu et al 2006a(Nanbu et al , b, 2007.…”

Section: Supercapacitors and Materials Synthetic Strategiesmentioning

confidence: 99%

An Overview on the Development of Electrochemical Capacitors and Batteries – Part I

Martins

Neves

Monje

et al. 2020

An. Acad. Bras. Ciênc.

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The Nobel Prize in Chemistry 2019 recognized the importance of Li-ion batteries and the revolution they allowed to happen during the past three decades. They are part of a broader class of electrochemical energy storage devices, which are employed where electrical energy is needed on demand and so, the electrochemical energy is converted into electrical energy as required by the application. This opens a variety of possibilities on the utilization of energy storage devices, beyond the well-known mobile applications, assisting on the decarbonization of energy production and distribution. In this series of reviews in two parts, two main types of energy storage devices will be explored: electrochemical capacitors (part I) and rechargeable batteries (part II). More specifi cally, we will discuss about the materials used in each type of device, their main role in the energy storage process, their advantages and drawbacks and, especially, strategies to improve their performance. In the present part, electrochemical capacitors will be addressed. Their fundamental difference to batteries is explained considering the process at the electrode/electrolyte surface and the impact in performance. Materials used in electrochemical capacitors, including double layer capacitors and pseudocapacitive materials will be reviewed, highlighting the importance of electrolytes. As an important part of these strategies, synthetic routes for the production of nanoparticles will also be approached (part I).

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Electrolytic Properties of Tetramethylammonium Compound in Highly Concentrated Solutions and Its Application to Electric Double-Layer Capacitors

Cited by 14 publications

References 10 publications

Flame-Retardant Electrolyte Solution for Dual-Ion Batteries

Flame-Retardant Electrolyte Solution for Dual-Ion Batteries

A review of electrolyte materials and compositions for electrochemical supercapacitors

An Overview on the Development of Electrochemical Capacitors and Batteries – Part I

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