Kunal Roy, Navya Rani M*, Tathagata Sardar, Rita Joshi, Manikanta P N, Jagadeesh Babu Sriramoju, Channabasaveshwar V. Yelamaggad, Ashwin C. Gowda and Dinesh Rangappa*,
{"title":"增强 gC3N4@TiO2-x/MoS2 三元纳米复合材料的电化学储能性能","authors":"Kunal Roy, Navya Rani M*, Tathagata Sardar, Rita Joshi, Manikanta P N, Jagadeesh Babu Sriramoju, Channabasaveshwar V. Yelamaggad, Ashwin C. Gowda and Dinesh Rangappa*, ","doi":"10.1021/acsaem.4c0188610.1021/acsaem.4c01886","DOIUrl":null,"url":null,"abstract":"<p >Herein, we delineate the preparation of a g-C<sub>3</sub>N<sub>4</sub>-added defect-induced TiO<sub>2-x</sub>/MoS<sub>2</sub> ternary nanocomposite using a two-step hydrothermal method followed by a solvent-reflux process. The oxygen vacancy-incorporated TiO<sub>2-<i>x</i></sub>, its binary TiO<sub>2-<i>x</i></sub>-MoS<sub>2</sub>, and ternary gC<sub>3</sub>N<sub>4</sub>@TiO<sub>2-<i>x</i></sub>-MoS<sub>2</sub> nanocomposites are evaluated by different structural, morphological, and compositional property measurement techniques. Further, the electrochemical charge-storage performance is measured by fabricating a supercapacitor in a three-electrode as well as a two-electrode system. The 30 wt % g-C<sub>3</sub>N<sub>4</sub> (among 20, 30, and 40% gC<sub>3</sub>N<sub>4</sub>)-based TiO<sub>2-<i>x</i></sub>/MoS<sub>2</sub> shows a very high specific areal capacitance of 1351.47 mF·cm<sup>–2</sup> at a current density of 0.5 mA·cm<sup>–2</sup>. An extraordinary cycling stability with 90% capacity retention after 5000 cycles at a current density of 4 mA·cm<sup>–2</sup> is achieved. Moreover, an asymmetric supercapacitor (ASC) is fabricated, obtaining an outstanding volumetric energy density of 784.31 mWh·cm<sup>–3</sup> and a power density of 9 W·cm<sup>–3</sup> with an extraordinary capacity retention of up to 95% after 5000 cycles. Thus, it is demonstrated that the ternary nanocomposite electrode has an outstanding potential to exhibit remarkable capacitance with enhanced cyclic stability.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Electrochemical Energy Storing Performance of gC3N4@TiO2-x/MoS2 Ternary Nanocomposite\",\"authors\":\"Kunal Roy, Navya Rani M*, Tathagata Sardar, Rita Joshi, Manikanta P N, Jagadeesh Babu Sriramoju, Channabasaveshwar V. Yelamaggad, Ashwin C. Gowda and Dinesh Rangappa*, \",\"doi\":\"10.1021/acsaem.4c0188610.1021/acsaem.4c01886\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Herein, we delineate the preparation of a g-C<sub>3</sub>N<sub>4</sub>-added defect-induced TiO<sub>2-x</sub>/MoS<sub>2</sub> ternary nanocomposite using a two-step hydrothermal method followed by a solvent-reflux process. The oxygen vacancy-incorporated TiO<sub>2-<i>x</i></sub>, its binary TiO<sub>2-<i>x</i></sub>-MoS<sub>2</sub>, and ternary gC<sub>3</sub>N<sub>4</sub>@TiO<sub>2-<i>x</i></sub>-MoS<sub>2</sub> nanocomposites are evaluated by different structural, morphological, and compositional property measurement techniques. Further, the electrochemical charge-storage performance is measured by fabricating a supercapacitor in a three-electrode as well as a two-electrode system. The 30 wt % g-C<sub>3</sub>N<sub>4</sub> (among 20, 30, and 40% gC<sub>3</sub>N<sub>4</sub>)-based TiO<sub>2-<i>x</i></sub>/MoS<sub>2</sub> shows a very high specific areal capacitance of 1351.47 mF·cm<sup>–2</sup> at a current density of 0.5 mA·cm<sup>–2</sup>. An extraordinary cycling stability with 90% capacity retention after 5000 cycles at a current density of 4 mA·cm<sup>–2</sup> is achieved. Moreover, an asymmetric supercapacitor (ASC) is fabricated, obtaining an outstanding volumetric energy density of 784.31 mWh·cm<sup>–3</sup> and a power density of 9 W·cm<sup>–3</sup> with an extraordinary capacity retention of up to 95% after 5000 cycles. Thus, it is demonstrated that the ternary nanocomposite electrode has an outstanding potential to exhibit remarkable capacitance with enhanced cyclic stability.</p>\",\"PeriodicalId\":4,\"journal\":{\"name\":\"ACS Applied Energy Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.4000,\"publicationDate\":\"2024-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Energy Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsaem.4c01886\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.4c01886","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhanced Electrochemical Energy Storing Performance of gC3N4@TiO2-x/MoS2 Ternary Nanocomposite
Herein, we delineate the preparation of a g-C3N4-added defect-induced TiO2-x/MoS2 ternary nanocomposite using a two-step hydrothermal method followed by a solvent-reflux process. The oxygen vacancy-incorporated TiO2-x, its binary TiO2-x-MoS2, and ternary gC3N4@TiO2-x-MoS2 nanocomposites are evaluated by different structural, morphological, and compositional property measurement techniques. Further, the electrochemical charge-storage performance is measured by fabricating a supercapacitor in a three-electrode as well as a two-electrode system. The 30 wt % g-C3N4 (among 20, 30, and 40% gC3N4)-based TiO2-x/MoS2 shows a very high specific areal capacitance of 1351.47 mF·cm–2 at a current density of 0.5 mA·cm–2. An extraordinary cycling stability with 90% capacity retention after 5000 cycles at a current density of 4 mA·cm–2 is achieved. Moreover, an asymmetric supercapacitor (ASC) is fabricated, obtaining an outstanding volumetric energy density of 784.31 mWh·cm–3 and a power density of 9 W·cm–3 with an extraordinary capacity retention of up to 95% after 5000 cycles. Thus, it is demonstrated that the ternary nanocomposite electrode has an outstanding potential to exhibit remarkable capacitance with enhanced cyclic stability.
期刊介绍:
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.