Electrochemistry of TiN in 6 M KOH Solution

Windisch, Charles F.; Virden, Jud W.; Elder, S. H.; Li, Jun; Engelhard, Mark H.

doi:10.1149/1.1838441

Cited by 28 publications

(18 citation statements)

References 3 publications

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“…Therefore, we consider that there exists a synergistic enhancing effect between TiC and carbon related to pseudoreaction in charge storage process. It has been reported that electrochemical reaction occurs during charge storage of TiN [10,26]. Because of the similarity in crystal structure and bonding type between TiC and TiN it is reasonable to consider that pseudocapacitance may also contribute to the total capacitance of TiC in KOH solution.…”

Section: Resultsmentioning

confidence: 99%

“…Electrode material is the key part in supercapacitors and much effort has been devoted to the research of electrode materials for improving electrical conductivity, increasing specific capacitance, and developing novel materials [2][3][4][5][6][7][8][9][10]. According to the charge storage mechanism, supercapacitors can be classified into electrical double layer (EDL) capacitors by absorbing ions from electrolyte solutions onto the electrode surface and pseudocapacitors based on Faradaic redox reactions between electrode and electrolyte [2].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synergistic enhancement of electrochemical performance of electrospun TiC/C hybrid nanofibers for supercapacitor application

Ren

Dai

Pang

et al. 2015

Electrochimica Acta

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergistic enhancement of electrochemical performance of electrospun TiC/C hybrid nanofibers for supercapacitor application

Ren

Dai

Pang

et al. 2015

Electrochimica Acta

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“…The second highest capacitance was measured in 1 M KOH aq., and this basic electrolyte gradually oxidizes TiN surface. 3,13 We therefore investigated the effect of cations with using a series of neutral aqueous electrolytes, where the TiN surface is stable without polarization. The CV curves in different alkali chloride electrolytes are shown in Figure 6a.…”

Section: Resultsmentioning

confidence: 99%

“…9,12-14 The research from a longitudinal perspective, which is of importance from an application perspective, is especially limited to the investigation in KOH aqueous solution. 3,13 The recent upsurge of interest in TiN electrodes therefore desires comprehensive studies on the electrochemistry of TiN in a variety of electrolytes.In most cases, composite electrodes prepared from slurry composed of active materials, binders and conductive additives (generally carbon) are employed. However, the composite electrodes are not suitable for the fundamental studies, because the additives and the mixing process to prepare the slurry may change various properties, such as morphology and surface chemistry, of the electrode materials, which makes it difficult to obtain intrinsic information on the active material itself.…”

mentioning

confidence: 99%

Impact of Electrolyte on Pseudocapacitance and Stability of Porous Titanium Nitride (TiN) Monolithic Electrode

Hasegawa

Kitada

Kawasaki

et al. 2014

J. Electrochem. Soc.

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We report the fabrication of porous titanium nitride (TiN) monoliths through the ammonolysis of porous TiO 2 monoliths prepared via the sol-gel process accompanied by phase separation. The obtained TiN monoliths possess good mechanical strength as well as excellent electric conductivity with a superconducting transition at T c ∼5.0 K. We have investigated the electrochemical properties of the porous TiN monoliths as an electrode using various electrolytes. The results reveal that the pseudocapacitance of TiN increases in the order of K + < Na + < Li + contrary to the case of EDL capacitance in neutral aqueous electrolytes. It is also found that acidic and strongly basic electrolytes are not suitable due to high corrosivity, while there is no significant deterioration when neutral aqueous electrolytes and organic electrolytes are used.Titanium nitride (TiN) exhibits significant potential in various electrochemical applications 1-8 owing to the unique intrinsic features such as excellent electric conductivity, high mechanical strength, and good chemical and thermal stabilities. One of the promising electrode applications of TiN electrodes is pseudocapacitors. 3-5 Meanwhile, the previous efforts devoted to the study on TiN materials disclose that the slightly oxidized layer is formed on TiN surface, 9-11 which indicates the oxidized surface significantly contributes to the interfacial reaction between electrolyte and electrode involving surface corrosion by polarization. Hence, fundamental understandings of the electrochemistry and stability of TiN surface are indispensable for the practical use of TiN pseudocapacitors. Nevertheless, there are only a few studies reported on the electrochemistry of TiN associated with surface corrosion chemistry. 9,12-14 The research from a longitudinal perspective, which is of importance from an application perspective, is especially limited to the investigation in KOH aqueous solution. 3,13 The recent upsurge of interest in TiN electrodes therefore desires comprehensive studies on the electrochemistry of TiN in a variety of electrolytes.In most cases, composite electrodes prepared from slurry composed of active materials, binders and conductive additives (generally carbon) are employed. However, the composite electrodes are not suitable for the fundamental studies, because the additives and the mixing process to prepare the slurry may change various properties, such as morphology and surface chemistry, of the electrode materials, which makes it difficult to obtain intrinsic information on the active material itself. On the other hand, porous monolithic electrodes [15][16][17][18] can overcome these issues, as they consist of a single piece of bulk electrode without any binders. In order to fabricate the monolithic electrodes, the control of pore properties is crucial, because porous structures are indispensable to allow the electrolyte to penetrate inside of the monolithic electrodes. 19 To date, we have developed the phase-separation method, a sol-gel process accompanied by spinod...

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“…Good electronic conductivity of TiN with high surface area has also attracted its interest for use in supercapacitors [109,110].…”

Section: ) Titanium Nitride (Tin)mentioning

confidence: 99%

Synthesis, Structure And Properties of Electrochemically Active Nanocomposites

Kim¹

2003

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. AbstractThe need for miniaturization of high-speed and high-power devices to meet consumer demand for easy access and portability has placed stringent demands on the energy requirements. There is therefore a need for high-energy density lightweight energy storage systems to meet these challenging demands of portable devices. The Liion battery since its commercialization by Sony in 1990 is still the major choice of rechargeable energy source for portable consumer electronic devices such as camcorders, laptops and cellular phones. Since 1990 however, the materials systems used in Li-ion batteries have considerably matured. The area of cathodes has witnessed considerable research activity and a number of systems have been identified with potential capacities for use in high-energy systems. In the area of anodes however, graphite still appears to be the material of choice. There is therefore a need to identify alternative electrochemically active anode systems better than carbon that could be competitive with existing and advanced cathode systems of the future while at the same time meeting the challenges posed by high-energy devices.Several metals are known to react with lithium to form useful anode materials exhibiting high capacity for Li-ion battery application. However, the cycle life of these materials is generally poor since the large volume changes (≅ 300~600 %) caused by the reaction of lithium with these metals inevitably leads to decrepitation, cracking and iii Tin-based nanocomposites on the other hand, have been synthesized by pyrolyzing the precursors generated by the infiltration of organotin compounds such as tetraethyl tin into mechanically milled PS-resin. The Sn/C electrodes exhibit a promising initial discharge capacity of ~480mAh/g that lowers to a value of 460 mAh/g after 30 cycles. The nanocomposite consists of spherical nano-particles of tin (~200nm) dispersed in amorphous carbon particles determined by TEM analysis. Results of the studies so far have shown that Sn and Si-based nanocomposites appear to be quite promising anode systems for Li-ion application.iv

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Electrochemistry of TiN in 6 M KOH Solution

Abstract: Thanks are given to the National Science Council of Taiwan (Project No. NSC 85-E007-022) for financial support.

Cited by 28 publications

References 3 publications

Synergistic enhancement of electrochemical performance of electrospun TiC/C hybrid nanofibers for supercapacitor application

Synergistic enhancement of electrochemical performance of electrospun TiC/C hybrid nanofibers for supercapacitor application

Impact of Electrolyte on Pseudocapacitance and Stability of Porous Titanium Nitride (TiN) Monolithic Electrode

Synthesis, Structure And Properties of Electrochemically Active Nanocomposites

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