ACS Applied Energy Materials最新文献

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Highly Efficient Integrated Perovskite/Organic Bulk-Heterojunction Solar Cells Combining Layer-By-Layer Processing Ternary Systems and Interface Modification 结合逐层处理三元系统和界面改性的高效集成 Perovskite/有机块状异质结太阳能电池
IF 6.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-10 DOI: 10.1021/acsaem.4c01430
Xiang He, Tianyu Xu, Jiarui Zhang, Shangfeng Yang, Weijie Song, Yi Cui, Wenjun Zhang
{"title":"Highly Efficient Integrated Perovskite/Organic Bulk-Heterojunction Solar Cells Combining Layer-By-Layer Processing Ternary Systems and Interface Modification","authors":"Xiang He, Tianyu Xu, Jiarui Zhang, Shangfeng Yang, Weijie Song, Yi Cui, Wenjun Zhang","doi":"10.1021/acsaem.4c01430","DOIUrl":"https://doi.org/10.1021/acsaem.4c01430","url":null,"abstract":"Integrated perovskite/organic bulk-heterojunction (BHJ) solar cells (IPOSCs) have been developed to extend the photoresponse of perovskites in the near-infrared region. Serious charge recombination at the perovskite/organic BHJ interface always reduces the open-circuit voltage (<i>V</i><sub>OC</sub>) and filling factor (FF). Here, we first prepare IPOSCs with layer-by-layer processing ternary BHJ (PTLBL), in which the acceptor mixture consists of Y6 and PC<sub>61</sub>BM. PC<sub>61</sub>BM addition inhibited the charge recombination in IPOSCs and induced PTLBL devices with a champion power conversion efficiency (PCE) of 20.85%. Then, we modified the perovskite surface with vanadium acetylacetonate (VAcac) and zirconium acetylacetonate (ZrAcac), which reduced the perovskite surface potential, enhanced the charge transfer between the perovskite and BHJ, and regulated the carrier extraction. The PTLBL devices with VAcac and ZrAcac exhibit champion PCEs of 21.06% and 21.32%, respectively, because of the further improvement in <i>V</i><sub>OC</sub> and FF. Combining layer-by-layer processing of ternary BHJ with interfacial materials provides a feasible strategy for simultaneously improving all the parameters of IPOSCs.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phosphate-Modified NiCo2O4@NiCoS Heterointerface Boosting Electrochemical Performance for Supercapacitors 磷酸盐改性镍钴氧化物@镍钴硅异质界面提升超级电容器的电化学性能
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-10 DOI: 10.1021/acsaem.4c0173510.1021/acsaem.4c01735
Rong-Hao Qiao, Bin Zhang*, Si-Qi Wang, Xue-Mei Luo and Guang-Ping Zhang, 
{"title":"Phosphate-Modified NiCo2O4@NiCoS Heterointerface Boosting Electrochemical Performance for Supercapacitors","authors":"Rong-Hao Qiao,&nbsp;Bin Zhang*,&nbsp;Si-Qi Wang,&nbsp;Xue-Mei Luo and Guang-Ping Zhang,&nbsp;","doi":"10.1021/acsaem.4c0173510.1021/acsaem.4c01735","DOIUrl":"https://doi.org/10.1021/acsaem.4c01735https://doi.org/10.1021/acsaem.4c01735","url":null,"abstract":"<p >Supercapacitors have attracted great interest in the field of energy storage devices owing to their high power density for quick charging and discharging. Nickel–cobalt-based materials are credited as promising cathode materials due to their rich valence and high redox reversibility. However, the poor conductivity and slow reaction kinetics of the nickel–cobalt-based electrode materials caused unsatisfactory rate capability of the devices. In this work, a phosphate-modified nickel–cobalt-based material with a core-branched structure was designed and fabricated by combining electrochemical and hydrothermal methods, in which nickel cobalt oxide (NCO) acted as the core and nickel cobalt sulfide (NCS) acted as the branches. The active materials were fully employed due to the 3D skeleton of the core-branched structure, facilitating ion transfer. Meanwhile, the phosphate-modified interface between NCO and NCS enhanced the electron transfer inside the material and changed the ratios of Co<sup>2+</sup>/Co<sup>3+</sup> and Ni<sup>2+</sup>/Ni<sup>3+</sup>, leading to excellent capacity and rate performance. The elaborate design of the structure makes the phosphate-modified NCO@NCS (P-NCO@NCS) electrode exhibit a high specific capacity of 1050 C g<sup>–1</sup> at 2 A g<sup>–1</sup> and an excellent capacity retention of 86.4% when the current density is increased to 30 A g<sup>–1</sup>. Our findings proposed an essential role of phosphate modification of the heterointerface, providing a strategy to design a structure for highly conductive electrodes.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Triazatruxene Amine Donor-Based Visible-Light-Responsive Unsymmetrical Squaraine Dyes for Dye-Sensitized Solar Cells 用于染料敏化太阳能电池的基于三氮杂环戊烯胺供体的可见光响应型非对称四氢缬氨酸染料
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-10 DOI: 10.1021/acsaem.4c0159110.1021/acsaem.4c01591
Kiran Balaso Ingole, Shivdeep Suresh Deshmukh, Tushar Singh Verma, Sailaja Krishnamurty, Kothandam Krishnamoorthy* and Jayaraj Nithyanandhan*, 
{"title":"Triazatruxene Amine Donor-Based Visible-Light-Responsive Unsymmetrical Squaraine Dyes for Dye-Sensitized Solar Cells","authors":"Kiran Balaso Ingole,&nbsp;Shivdeep Suresh Deshmukh,&nbsp;Tushar Singh Verma,&nbsp;Sailaja Krishnamurty,&nbsp;Kothandam Krishnamoorthy* and Jayaraj Nithyanandhan*,&nbsp;","doi":"10.1021/acsaem.4c0159110.1021/acsaem.4c01591","DOIUrl":"https://doi.org/10.1021/acsaem.4c01591https://doi.org/10.1021/acsaem.4c01591","url":null,"abstract":"<p >Optimized charge-transfer dynamics at the dye-TiO<sub>2</sub>/electrolyte interface are required for an enhanced dye-sensitized solar cell (DSSC) device performance. Such an optimized interface enhances the charge-injection, dye-regeneration, and diminished charge-recombination processes, synergistically enhancing the device efficiency. In this study, octupolar-structured sensitizers are designed to improve the interaction between the dye and the redox electrolyte for increasing the dye-regeneration process upon photoexcitation. Accordingly, a set of unsymmetrical squaraine dyes with indoline and triazatruxene amine donor-based D–A–D dyes are designed (<b>KV1</b>–<b>KV3</b>), synthesized, and sensitized with a semiconducting metal oxide (TiO<sub>2</sub>) film. The sensitizer forms a monolayer on the TiO<sub>2</sub> surface, leading to a dye–dye interaction, which broadens the absorption spectrum. The N atom of the triazatruxene amine donor was left unsubstituted in <b>KV1</b>, whereas a hexyl chain was installed in <b>KV2</b> and <b>KV3</b> and a branched alkyl chain was installed on the core N atoms in <b>KV3</b> to control the self-assembly of dyes on the TiO<sub>2</sub> surface. Self-assembly of alkyl groups wrapped in <b>KV1</b>–<b>KV3</b> dyes on the TiO<sub>2</sub> surface aids surface passivation and broadens the absorption profile, improving the light-harvesting capabilities. The DSSC devices based on <b>KV2</b> exhibited a high power conversion efficiency of 7.85% (<i>V</i><sub>oc</sub> = 794 mV, <i>J</i><sub>sc</sub> = 14.76 mA/cm<sup>2</sup>, and FF = 67%), with an onset incident photon-to-current conversion efficiency response from 680 nm.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of High-Performance Large-Scale Structural Supercapacitors via the Resin Infusion Process and Encapsulation Process 通过树脂灌注工艺和封装工艺开发高性能大规模结构超级电容器
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-10 DOI: 10.1021/acsaem.4c0175410.1021/acsaem.4c01754
Yi-Ruei Lee, Kai-Jen Wu, Wen-Bin Young and Christine Young*, 
{"title":"Development of High-Performance Large-Scale Structural Supercapacitors via the Resin Infusion Process and Encapsulation Process","authors":"Yi-Ruei Lee,&nbsp;Kai-Jen Wu,&nbsp;Wen-Bin Young and Christine Young*,&nbsp;","doi":"10.1021/acsaem.4c0175410.1021/acsaem.4c01754","DOIUrl":"https://doi.org/10.1021/acsaem.4c01754https://doi.org/10.1021/acsaem.4c01754","url":null,"abstract":"<p >Large-scale structural supercapacitors (SSCs) are gaining attention as a promising energy storage option for electric vehicles and renewable energy due to their robustness and large storage capacity. Current manufacturing methods frequently yield unstable thin films with inconsistent size and thickness, hindering their industrial-scale viability. This study showcases a resin infusion (RI) process that produces large-sized SSCs, enhancing the uniformity, electrochemical performance, and mechanical properties. Woven carbon fibers with activated carbon coatings serve as electrodes, with a glass fiber dielectric layer acting as both a separator and reinforcement for mechanical strength. An epoxy PVA/KOH-based electrolyte is fabricated using the RI process. It is found that an electrolyte with a resin content ranging from 15 to 40 wt % achieves a balanced performance in terms of both electrochemical and mechanical properties. The 100 × 100 mm<sup>2</sup> area of an SSC with 15 wt % resin demonstrates the highest specific capacitance of 12.60 F/g, specific energy of 0.646 Wh/kg, and specific power of 0.031 kW/kg. Moreover, encapsulating the SSCs with prepreg glass fiber significantly prolongs the lifespan of the device, maintaining 87.3% of the initial capacitance after 7 days. This study advances SSC fabrication processes, facilitating their immediate scaling to an industrial level and broadening their applicability in real-world industrial and market scenarios.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverted-Structured Perovskite Solar Cells with a TiO2 Electron-Collector Layer Formed at Room Temperature from Titanium Halide Solutions 带有由卤化钛溶液在室温下形成的 TiO2 电子集电层的倒置结构 Perovskite 太阳能电池
IF 6.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c01226
Atsushi Kogo, Ryo Ishikawa, Takurou N. Murakami
{"title":"Inverted-Structured Perovskite Solar Cells with a TiO2 Electron-Collector Layer Formed at Room Temperature from Titanium Halide Solutions","authors":"Atsushi Kogo, Ryo Ishikawa, Takurou N. Murakami","doi":"10.1021/acsaem.4c01226","DOIUrl":"https://doi.org/10.1021/acsaem.4c01226","url":null,"abstract":"Organohalide perovskites are promising light-harvesting materials for solar cells because of their ease of synthesis and high performance. P-i-n-structured perovskite solar cells have the advantage of a low processing temperature (&lt;150 °C) for applications in flexible solar cells. However, they are limited by the high cost and low stability of fullerene electron collectors. In this study, we developed a solution-based method for synthesizing TiO<sub>2</sub> at room temperature using titanium halide precursors and employed it as an electron collector. Uniform and dense TiO<sub>2</sub> was formed without using vacuum processes by the oxidation of TiI<sub>4</sub> in ambient air. A power conversion efficiency (PCE) of 12.6% was obtained. Our study paves the way for synthesizing efficient and affordable solar cells at a mass scale.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Turning Adversity into Advantage: Investigating the Capacity Decay Mode of Carboxylate Functionalized-Anthraquinone in Organic Redox Flow Batteries 化不利为有利:研究有机氧化还原流电池中羧酸官能化蒽醌的容量衰减模式
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c0112310.1021/acsaem.4c01123
Richa Gupta,  and , Kothandaraman Ramanujam*, 
{"title":"Turning Adversity into Advantage: Investigating the Capacity Decay Mode of Carboxylate Functionalized-Anthraquinone in Organic Redox Flow Batteries","authors":"Richa Gupta,&nbsp; and ,&nbsp;Kothandaraman Ramanujam*,&nbsp;","doi":"10.1021/acsaem.4c0112310.1021/acsaem.4c01123","DOIUrl":"https://doi.org/10.1021/acsaem.4c01123https://doi.org/10.1021/acsaem.4c01123","url":null,"abstract":"<p >Organic redox-molecule-based flow batteries (ORFB) are considered a potential alternative to the inorganic counterparts in flow battery systems as, technically speaking, organic materials are ubiquitous and can be synthesized anywhere. Nevertheless, they were also known to degrade in a multitude of ways in flow battery ambience. In this study, 4,4′-((9,10-dioxo-9,10-dihydroanthracene-1,5-diyl)bis(oxy))dibutyric acid (1,5-DCAQ) is used as an anolyte in alkaline media. As carboxylate interacts intramolecularly with the carbonyl group of 1,5-DCAQ, the aromatic portion of the molecule exhibits an association with the Nafion membrane separator through lipophilic interaction, causing capacity decay of the cell. We have modified this curse into a boon by functionalizing the thermally activated graphite felt anode with the Nafion ionomer, thereby retaining the redox molecule around the electrode instead of the membrane, achieving 99.9% of theoretical capacity and 95% Coulombic efficiency at 15 mA cm<sup>–2</sup> current density. As this molecule exhibits a solubility of 0.5 M, the system with suitable optimization is expected to deliver a solubility of up to 26.8 Ah L<sup>–1</sup>.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BaZr(Ce,Y)O3-Pr-Doped CeO2 Double Columnar for the Cathodic Functional Layer of Ni–Fe Metal-Supported Protonic Ceramic Fuel Cells 用于 Ni-Fe 金属支撑质子陶瓷燃料电池阴极功能层的 BaZr(Ce,Y)O3-Pr-掺杂 CeO2 双柱体
IF 6.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c01529
Hyo-Young Kim, Motonori Watanabe, Jun Tae Song, Miki Inada, Tatsumi Ishihara
{"title":"BaZr(Ce,Y)O3-Pr-Doped CeO2 Double Columnar for the Cathodic Functional Layer of Ni–Fe Metal-Supported Protonic Ceramic Fuel Cells","authors":"Hyo-Young Kim, Motonori Watanabe, Jun Tae Song, Miki Inada, Tatsumi Ishihara","doi":"10.1021/acsaem.4c01529","DOIUrl":"https://doi.org/10.1021/acsaem.4c01529","url":null,"abstract":"Metal-supported protonic ceramic fuel cells were prepared, and the effects of a double columnar layer at the cathode side of BaZr<sub>0.44</sub>Ce<sub>0.36</sub>Y<sub>0.2</sub>O<sub>3</sub> (BZCY) on power density and open-circuit voltage (OCV) were studied. The double columnar structure of Pr<sub>0.2</sub>Ce<sub>0.8</sub>O<sub>2</sub> (PrDC) and BZCY was prepared with pulsed laser deposition. It was found that the insertion of the double columnar layer was highly effective for increasing the power density and OCV. The optimum composition of the double columnar was BZCY:PrDC = 7:3, with a thickness of 200 nm. The power density of PCFCs with the BZCY-PrDC double columnar reached 413 mW/cm<sup>2</sup>, and the OCV was approximately 1.05 V at 873 K, which is six times higher than that of a cell without a functional layer. The high power density of the cell was attributed to the decreased overpotential of the cathode. Therefore, the BZCY-PrDC double columnar layer is effective in expanding the reaction site by increasing the proton concentration at the cathodic interface.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverted-Structured Perovskite Solar Cells with a TiO2 Electron-Collector Layer Formed at Room Temperature from Titanium Halide Solutions 带有由卤化钛溶液在室温下形成的 TiO2 电子集电层的倒置结构 Perovskite 太阳能电池
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c0122610.1021/acsaem.4c01226
Atsushi Kogo*, Ryo Ishikawa and Takurou N. Murakami, 
{"title":"Inverted-Structured Perovskite Solar Cells with a TiO2 Electron-Collector Layer Formed at Room Temperature from Titanium Halide Solutions","authors":"Atsushi Kogo*,&nbsp;Ryo Ishikawa and Takurou N. Murakami,&nbsp;","doi":"10.1021/acsaem.4c0122610.1021/acsaem.4c01226","DOIUrl":"https://doi.org/10.1021/acsaem.4c01226https://doi.org/10.1021/acsaem.4c01226","url":null,"abstract":"<p >Organohalide perovskites are promising light-harvesting materials for solar cells because of their ease of synthesis and high performance. P-i-n-structured perovskite solar cells have the advantage of a low processing temperature (&lt;150 °C) for applications in flexible solar cells. However, they are limited by the high cost and low stability of fullerene electron collectors. In this study, we developed a solution-based method for synthesizing TiO<sub>2</sub> at room temperature using titanium halide precursors and employed it as an electron collector. Uniform and dense TiO<sub>2</sub> was formed without using vacuum processes by the oxidation of TiI<sub>4</sub> in ambient air. A power conversion efficiency (PCE) of 12.6% was obtained. Our study paves the way for synthesizing efficient and affordable solar cells at a mass scale.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Electrochemical Energy Storing Performance of gC3N4@TiO2-x/MoS2 Ternary Nanocomposite 增强 gC3N4@TiO2-x/MoS2 三元纳米复合材料的电化学储能性能
IF 6.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c01886
Kunal Roy, Navya Rani M, Tathagata Sardar, Rita Joshi, Manikanta P N, Jagadeesh Babu Sriramoju, Channabasaveshwar V. Yelamaggad, Ashwin C. Gowda, Dinesh Rangappa
{"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, Dinesh Rangappa","doi":"10.1021/acsaem.4c01886","DOIUrl":"https://doi.org/10.1021/acsaem.4c01886","url":null,"abstract":"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.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Electrochemical Energy Storing Performance of gC3N4@TiO2-x/MoS2 Ternary Nanocomposite 增强 gC3N4@TiO2-x/MoS2 三元纳米复合材料的电化学储能性能
IF 5.4 3区 材料科学
ACS Applied Energy Materials Pub Date : 2024-09-09 DOI: 10.1021/acsaem.4c0188610.1021/acsaem.4c01886
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":"Enhanced Electrochemical Energy Storing Performance of gC3N4@TiO2-x/MoS2 Ternary Nanocomposite","authors":"Kunal Roy,&nbsp;Navya Rani M*,&nbsp;Tathagata Sardar,&nbsp;Rita Joshi,&nbsp;Manikanta P N,&nbsp;Jagadeesh Babu Sriramoju,&nbsp;Channabasaveshwar V. Yelamaggad,&nbsp;Ashwin C. Gowda and Dinesh Rangappa*,&nbsp;","doi":"10.1021/acsaem.4c0188610.1021/acsaem.4c01886","DOIUrl":"https://doi.org/10.1021/acsaem.4c01886https://doi.org/10.1021/acsaem.4c01886","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":5.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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