{"title":"聚咔唑/硫化镉/赤铁矿氧化铁（PCz/CdS/α-Fe2O3）纳米复合超级电容器电极电化学活性研究","authors":"Roshini Gunasekaran, Julie Charles, Satheesh Kumar Gopal","doi":"10.1002/pol.20240415","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>A novel ternary polycarbazole/cadmium sulfide/hematite iron (III) oxide (PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub>) nanocomposite was synthesized through in situ chemical polymerization method. The phase structure and morphology of PCz, PCz/CdS, PCz/α-Fe<sub>2</sub>O<sub>3</sub>, and PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> were analyzed using XRD and FESEM techniques. From HR-TEM study, particle size of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> nanocomposite was found to be 68.09 nm. The chemical composition and the binding energy of the elements present in PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> nanocomposite were examined through XPS. BET studies revealed the mesoporous nature of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> with a large surface area (35.51 m<sup>2</sup> g<sup>−1</sup>) compared to PCz/α-Fe<sub>2</sub>O<sub>3</sub> (21.52 m<sup>2</sup> g<sup>−1</sup>) and PCz/CdS (7.47 m<sup>2</sup> g<sup>−1</sup>) nanocomposites. Cyclic voltammetric studies revealed the highest specific capacitance (634.14 Fg<sup>−1</sup>) of ternary PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> electrode in KOH electrolyte in comparison to H<sub>2</sub>SO<sub>4</sub> (49.44 Fg<sup>−1</sup>) and Na<sub>2</sub>SO<sub>4</sub> (79.94 Fg<sup>−1</sup>) electrolytes at a scan rate of 3 mVs<sup>−1</sup>. Cyclic stability test indicated a high capacitive retentivity of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> (97%) electrode than PCz/CdS (90%) and PCz/α-Fe<sub>2</sub>O<sub>3</sub> (93%) electrodes after completion of 2000 cycles. From EIS, PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> displayed a low ESR value (1.35 Ω) than the binary electrodes; the value increased slightly after the cyclic stability analysis. All these indicate the effectiveness of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> as a suitable electrode for supercapacitors.</p>\n </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"63 1","pages":"86-108"},"PeriodicalIF":3.9000,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigations on Electrochemical Activity of Polycarbazole/Cadmium Sulfide/Hematite Iron (III) Oxide (PCz/CdS/α-Fe2O3) Nanocomposite Electrode for Supercapacitors\",\"authors\":\"Roshini Gunasekaran, Julie Charles, Satheesh Kumar Gopal\",\"doi\":\"10.1002/pol.20240415\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>A novel ternary polycarbazole/cadmium sulfide/hematite iron (III) oxide (PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub>) nanocomposite was synthesized through in situ chemical polymerization method. The phase structure and morphology of PCz, PCz/CdS, PCz/α-Fe<sub>2</sub>O<sub>3</sub>, and PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> were analyzed using XRD and FESEM techniques. From HR-TEM study, particle size of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> nanocomposite was found to be 68.09 nm. The chemical composition and the binding energy of the elements present in PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> nanocomposite were examined through XPS. BET studies revealed the mesoporous nature of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> with a large surface area (35.51 m<sup>2</sup> g<sup>−1</sup>) compared to PCz/α-Fe<sub>2</sub>O<sub>3</sub> (21.52 m<sup>2</sup> g<sup>−1</sup>) and PCz/CdS (7.47 m<sup>2</sup> g<sup>−1</sup>) nanocomposites. Cyclic voltammetric studies revealed the highest specific capacitance (634.14 Fg<sup>−1</sup>) of ternary PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> electrode in KOH electrolyte in comparison to H<sub>2</sub>SO<sub>4</sub> (49.44 Fg<sup>−1</sup>) and Na<sub>2</sub>SO<sub>4</sub> (79.94 Fg<sup>−1</sup>) electrolytes at a scan rate of 3 mVs<sup>−1</sup>. Cyclic stability test indicated a high capacitive retentivity of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> (97%) electrode than PCz/CdS (90%) and PCz/α-Fe<sub>2</sub>O<sub>3</sub> (93%) electrodes after completion of 2000 cycles. From EIS, PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> displayed a low ESR value (1.35 Ω) than the binary electrodes; the value increased slightly after the cyclic stability analysis. All these indicate the effectiveness of PCz/CdS/α-Fe<sub>2</sub>O<sub>3</sub> as a suitable electrode for supercapacitors.</p>\\n </div>\",\"PeriodicalId\":16888,\"journal\":{\"name\":\"Journal of Polymer Science\",\"volume\":\"63 1\",\"pages\":\"86-108\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymer Science\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/pol.20240415\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/pol.20240415","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
Investigations on Electrochemical Activity of Polycarbazole/Cadmium Sulfide/Hematite Iron (III) Oxide (PCz/CdS/α-Fe2O3) Nanocomposite Electrode for Supercapacitors
A novel ternary polycarbazole/cadmium sulfide/hematite iron (III) oxide (PCz/CdS/α-Fe2O3) nanocomposite was synthesized through in situ chemical polymerization method. The phase structure and morphology of PCz, PCz/CdS, PCz/α-Fe2O3, and PCz/CdS/α-Fe2O3 were analyzed using XRD and FESEM techniques. From HR-TEM study, particle size of PCz/CdS/α-Fe2O3 nanocomposite was found to be 68.09 nm. The chemical composition and the binding energy of the elements present in PCz/CdS/α-Fe2O3 nanocomposite were examined through XPS. BET studies revealed the mesoporous nature of PCz/CdS/α-Fe2O3 with a large surface area (35.51 m2 g−1) compared to PCz/α-Fe2O3 (21.52 m2 g−1) and PCz/CdS (7.47 m2 g−1) nanocomposites. Cyclic voltammetric studies revealed the highest specific capacitance (634.14 Fg−1) of ternary PCz/CdS/α-Fe2O3 electrode in KOH electrolyte in comparison to H2SO4 (49.44 Fg−1) and Na2SO4 (79.94 Fg−1) electrolytes at a scan rate of 3 mVs−1. Cyclic stability test indicated a high capacitive retentivity of PCz/CdS/α-Fe2O3 (97%) electrode than PCz/CdS (90%) and PCz/α-Fe2O3 (93%) electrodes after completion of 2000 cycles. From EIS, PCz/CdS/α-Fe2O3 displayed a low ESR value (1.35 Ω) than the binary electrodes; the value increased slightly after the cyclic stability analysis. All these indicate the effectiveness of PCz/CdS/α-Fe2O3 as a suitable electrode for supercapacitors.
期刊介绍：
Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology.
As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.
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