Meena Yadav, Rajat Arora, Monika Dhanda, Simran Ahlawat, Priti Pahuja, Geeta Singh, Suman Lata
{"title":"聚吡咯嵌层氧化钛/氧化硅纳米球结构的超级电容器电极持能参数优化","authors":"Meena Yadav, Rajat Arora, Monika Dhanda, Simran Ahlawat, Priti Pahuja, Geeta Singh, Suman Lata","doi":"10.1007/s10008-024-06101-3","DOIUrl":null,"url":null,"abstract":"<div><p>Afresh synthesis of PPy/TiO<sub>2</sub>/SiO<sub>2</sub> (PTS) nanocomposites via in situ chemical oxidation polymerization of pyrrole and by altering the weight ratio of TiO<sub>2</sub>/SiO<sub>2</sub> nanosphere (TS Ns) is executed in this work. After a significant structural and morphological analysis, the nanocomposites were investigated for electrochemical behavior in 1 M H<sub>2</sub>SO<sub>4</sub> adopting CV, GCD, and EIS measurements using three as well as two-electrode system setups. Results disclose that different feeding ratios of TS Ns, corresponding variation in PPy as well in synthesized nanocomposites play an important role in the enhancement of electrochemical properties. After a comparative study, it is observed that the PTS2 that is PPy:TS (w/w) as 50:50 sample at 10 mV/s scanning rate shows the highest specific capacitance, 499 F/g, and the value accords well with that of obtained through GCD findings (413 F/g) and the areal capacitance of the optimized electrode as 838.3 mF/cm<sup>2</sup>. PTS2 provided the energy density as 28.2 Wh/kg which is approximately 19 times more than that of neat PPy. The power density for PPy and PTS2 at 0.5 A/g current density was found to be 64.8 W/kg and 219 W/kg, respectively. Herein, the supercapacitor application gets strengthened with ideal capacitive behavior due to the high value (0.85) of “<i>n</i>” obtained through EIS findings and interpretation. It retained 92.23% of its initial current response even after covering ten thousand (10,000) charge–discharge rounds. Further, a device was assembled to show practical use of the best one configured electrode and charged for 5 min that could promptly illuminate the blue light emitting diode (LED) for 10 min.</p><h3>Graphical abstract</h3><p>Schematical synthesis of PPy/TiO<sub>2</sub>/SiO<sub>2</sub> NCs, electrode modification, and their electrochemical study for energy storage application</p>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"681 - 700"},"PeriodicalIF":2.6000,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-024-06101-3.pdf","citationCount":"0","resultStr":"{\"title\":\"Optimizing energy holding parameters of supercapacitor electrode configured using titanium oxide/silicon oxide nanospheres with polypyrrole intercalations\",\"authors\":\"Meena Yadav, Rajat Arora, Monika Dhanda, Simran Ahlawat, Priti Pahuja, Geeta Singh, Suman Lata\",\"doi\":\"10.1007/s10008-024-06101-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Afresh synthesis of PPy/TiO<sub>2</sub>/SiO<sub>2</sub> (PTS) nanocomposites via in situ chemical oxidation polymerization of pyrrole and by altering the weight ratio of TiO<sub>2</sub>/SiO<sub>2</sub> nanosphere (TS Ns) is executed in this work. After a significant structural and morphological analysis, the nanocomposites were investigated for electrochemical behavior in 1 M H<sub>2</sub>SO<sub>4</sub> adopting CV, GCD, and EIS measurements using three as well as two-electrode system setups. Results disclose that different feeding ratios of TS Ns, corresponding variation in PPy as well in synthesized nanocomposites play an important role in the enhancement of electrochemical properties. After a comparative study, it is observed that the PTS2 that is PPy:TS (w/w) as 50:50 sample at 10 mV/s scanning rate shows the highest specific capacitance, 499 F/g, and the value accords well with that of obtained through GCD findings (413 F/g) and the areal capacitance of the optimized electrode as 838.3 mF/cm<sup>2</sup>. PTS2 provided the energy density as 28.2 Wh/kg which is approximately 19 times more than that of neat PPy. The power density for PPy and PTS2 at 0.5 A/g current density was found to be 64.8 W/kg and 219 W/kg, respectively. Herein, the supercapacitor application gets strengthened with ideal capacitive behavior due to the high value (0.85) of “<i>n</i>” obtained through EIS findings and interpretation. It retained 92.23% of its initial current response even after covering ten thousand (10,000) charge–discharge rounds. 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Optimizing energy holding parameters of supercapacitor electrode configured using titanium oxide/silicon oxide nanospheres with polypyrrole intercalations
Afresh synthesis of PPy/TiO2/SiO2 (PTS) nanocomposites via in situ chemical oxidation polymerization of pyrrole and by altering the weight ratio of TiO2/SiO2 nanosphere (TS Ns) is executed in this work. After a significant structural and morphological analysis, the nanocomposites were investigated for electrochemical behavior in 1 M H2SO4 adopting CV, GCD, and EIS measurements using three as well as two-electrode system setups. Results disclose that different feeding ratios of TS Ns, corresponding variation in PPy as well in synthesized nanocomposites play an important role in the enhancement of electrochemical properties. After a comparative study, it is observed that the PTS2 that is PPy:TS (w/w) as 50:50 sample at 10 mV/s scanning rate shows the highest specific capacitance, 499 F/g, and the value accords well with that of obtained through GCD findings (413 F/g) and the areal capacitance of the optimized electrode as 838.3 mF/cm2. PTS2 provided the energy density as 28.2 Wh/kg which is approximately 19 times more than that of neat PPy. The power density for PPy and PTS2 at 0.5 A/g current density was found to be 64.8 W/kg and 219 W/kg, respectively. Herein, the supercapacitor application gets strengthened with ideal capacitive behavior due to the high value (0.85) of “n” obtained through EIS findings and interpretation. It retained 92.23% of its initial current response even after covering ten thousand (10,000) charge–discharge rounds. Further, a device was assembled to show practical use of the best one configured electrode and charged for 5 min that could promptly illuminate the blue light emitting diode (LED) for 10 min.
Graphical abstract
Schematical synthesis of PPy/TiO2/SiO2 NCs, electrode modification, and their electrochemical study for energy storage application
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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