Energy Storage最新文献

{"title":"Microwave-Induced Structural Modifications in Reduced Graphene Oxide for Enhanced Supercapacitive Performance","authors":"Poonam Mahendia,&nbsp;Ritu Jangra,&nbsp;Manoj Karokoti,&nbsp;Suman Mahendia,&nbsp;O. P. Sinha","doi":"10.1002/est2.70180","DOIUrl":"https://doi.org/10.1002/est2.70180","url":null,"abstract":"<div>\u0000 \u0000 <p>The state of the art in improving the thermal and electrochemical properties of reduced graphene oxide (RGO) prepared via microwave heat treatment (MWHT)-induced chemical reduction of modified Hummer's method synthesized GO is presented. Microwave heating is an efficient and green method of heating. It is a facile and mild heating method through which uniform and synchronized heating can be done. Thus, it helps in enhancing the uniform porosity throughout the graphene matrix. The optical, structural, and thermal characterization of synthesized RGO and after microwave heat treatment (MWRGO) have been done using UV–Visible absorption spectroscopy, Transmission Electron Microscopy (TEM), Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, and Thermogravimetric Analysis (TGA). The prepared materials were tested for supercapacitor (SC) in a symmetric electric double layer capacitor (EDLC) type parallel plate cell design. The prepared cell has been checked for electrochemical performance using cyclic voltammetry (CV) measurements and cross-confirmed through Electrochemical Impedance spectroscopy (EIS) and Galvanostatic Charge–discharge (GCD) measurements. Enhanced electrochemical performance of MWRGO-based supercapacitive cell depicts specific capacitance of 289 F/g at low ESR of 3.4 Ω and energy density of 24 Wh/Kg at power density of 1000 W/Kg. This is due to enhanced specific surface area to 731.81 m²/g after microwave heat treatment, which hence plays a major role in achieving virtuous electrochemical performance of RGO for energy applications.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guest Editorial on “Advanced Energy Storage Materials and Applications”","authors":"Ashish Bhatnagar","doi":"10.1002/est2.70183","DOIUrl":"https://doi.org/10.1002/est2.70183","url":null,"abstract":"","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Performance Enhancement of Lithium-Ion Batteries Through PCM/CuO Nanoadditives and Fin Integration: A Numerical Approach","authors":"S. M. D. Shehabaz,&nbsp;S. K. Gugulothu,&nbsp;Raju Muthyala,&nbsp;Praveen Barmavatu","doi":"10.1002/est2.70137","DOIUrl":"https://doi.org/10.1002/est2.70137","url":null,"abstract":"<div>\u0000 \u0000 <p>The efficiency and effectiveness of a battery thermal management system (BTMS) primarily depend on the lesser heat capacity of the phase change material (PCM). To improve the performance of BTMS, the bare batteries with different extended surfaces (straight and arc) are considered to enhance the dissipation of heat, leading to significant enhancement of bare battery performance. In the present study, numerical simulations are carried out to study the impact of extended surfaces and the influence of CuO (10%) nano additive dispersion in PCM. Also, analyses are carried out by modifying the geometries of the arc fins to enhance the thermal performance of the battery. Results reported that the proposed extended surfaces improved the battery life by 61%–90% compared to conventional BTMS systems. Extended surfaces boost heat exchange surface area, improve battery-to-PCM/CuO heat dissipation, and form a novel method for heat conduction during liquid fraction melting. This network expands by increasing arc fin radial distance, enhancing thermal performance. At ambient temperature range of 15°C–45°C, the PCM/CuO/fin system substantially improved compared with the PCM-based system by 163%, 192%, and 212%, respectively. These findings demonstrate the possibility of straight and arc fin shapes to improve PCM battery thermal control. The experimental and numerical results show how these fin designs optimize heat transport, increasing battery life and improving thermal control under varied operating situations. This novel approach overcomes PCM-based system restrictions to improve battery performance and lifetime.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Special Issue Guest Editorial for Emerging Energy Storage Systems and Green Technologies","authors":"Mohamamd Khalid,&nbsp;Chong Wen Tong","doi":"10.1002/est2.70184","DOIUrl":"https://doi.org/10.1002/est2.70184","url":null,"abstract":"","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphene Oxide-Based Fullerenes for Efficient Symmetric Configuration Supercapacitors","authors":"Imran Shafi,&nbsp;Panagiotis Grammatikopoulos,&nbsp;Ishaq Ahmad","doi":"10.1002/est2.70179","DOIUrl":"https://doi.org/10.1002/est2.70179","url":null,"abstract":"<div>\u0000 \u0000 <p>Graphene nanomaterials are anticipated to enhance the specific energy-power of supercapacitors, providing a substitute to lithium-ion batteries. Herein, we investigate graphene-oxide sheet/carbon nanoparticle (GO-CNP) nanocomposites synthesized by ultrasonication of chemically synthesized GO sheets with CNPs directly derived from the GO sheets. Structural authentication revealed that CNPs act as suitable spacers, isolating the 3D GO network layers up to 3.8 sheets (single-sheet thickness: ~0.55 nm). The as-prepared nanocomposites, characterized under a three-electrode electrochemical system in aqueous solution (1 M KOH), displayed high electrochemical capacitive charge storage (97% at scan rate of 100 mV s⁻¹), very high specific capacitance (250 F g⁻¹ at 0.25 A g⁻¹ and 277 F g⁻¹ at 50 mV s⁻¹), and excellent cyclic retention (85.6% of the initial capacitance after 10 000 cycles). A GO-sheet/CNP-based symmetric supercapacitor device delivered excellent specific energy-power density of 64.8 W h kg⁻¹ and 1372.2 W kg⁻¹, respectively. Consequently, the device could power a white-emitting LED of 10 W at 2.5 V for 1 min with full brightness against a charging time of 20 s. The outstanding electrochemical properties of the nanocomposites are attributed to the disruption of GO stacking due to the presence of conductive CNPs, which facilitated ionic transport for optimized outcomes.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guest Editorial for Special Issue on Sustainable Energy Systems With Energy Storage Options","authors":"Mehmet Ziya Sogut,&nbsp;Yusuf Bicer","doi":"10.1002/est2.70185","DOIUrl":"https://doi.org/10.1002/est2.70185","url":null,"abstract":"","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Pore Diameter on Tuning the Hydrogen Storage Capacity of Yttrium Atom-Decorated Covalent Organic Frameworks: A Theoretical Study","authors":"V. M. Vasanthakannan,&nbsp;K. Senthilkumar","doi":"10.1002/est2.70177","DOIUrl":"https://doi.org/10.1002/est2.70177","url":null,"abstract":"<div>\u0000 \u0000 <p>The electronic structure and hydrogen storage properties of benzene-based covalent organic frameworks (COFs) with pore diameters of 0.53, 0.99, and 1.45 nm are studied using density functional theory calculations. The studied COFs show poor H₂ molecule adsorption properties. To enhance their H₂ molecule adsorption properties, Y atoms are decorated on the COFs with an average binding energy of about 5–6 eV per Y atom. Each Y atom of Y-decorated COFs, YCOF1, YCOF2, and YCOF3 effectively adsorbs six H₂ molecules with an average H₂ adsorption energy of −0.28, −0.34, and −0.35 eV per H₂ molecule, respectively. The H₂ molecule storage capacity of YCOF1, YCOF2, and YCOF3 is found to be 4.7%, 5.1%, and 6.5% with desorption temperatures of 358, 434, and 447 K, respectively. The findings show that a larger pore diameter provides more space for metal atom decoration and thereby increases the H₂ molecule adsorption capacity. The H₂ molecule adsorption weight percentage of YCOF3 meets the target H₂ molecule storage capacity suggested by the U.S. Department of Energy and Fuel Cells and Hydrogen Joint Undertaking (FCH-JU) in Europe.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Investigation on Two-Dimensional Ti2CY2 (Y = O, S) MXene/Graphene Van der Waals Heterostructure as Potential Anode Material for Lithium-Ion Batteries: A First-Principles Calculation","authors":"Lakshay Girdhar,&nbsp;Paramita Haldar","doi":"10.1002/est2.70175","DOIUrl":"https://doi.org/10.1002/est2.70175","url":null,"abstract":"<div>\u0000 \u0000 <p>With the increasing demand for high-performance energy storage devices, the demand for alternative anode materials with high energy density and operational voltage is becoming urgent. Two-dimensional van der Waals (vdW) heterostructures gained popularity due to their large surface area and adjustable interlayer spacing. In this work, we have employed first-principles calculations to compare the structural, electronic, adsorption, and electrochemical properties of O and S functionalized Ti₂CY₂/graphene (Y = O, S) vdW heterostructures. The optimized heterostructure formed by O and S functionalized MXene and graphene layers are separated by 3.04 and 3.40 Å, respectively, giving the binding energy per atom as −0.019 and −0.018 eV. It is found that the intercalation of lithium (Li) atoms in between the Ti₂CY₂/Graphene layers is thermodynamically more favorable in comparison with intercalation on the top or below the heterostructures. The Bader charge transfer analysis confirms that O atoms gain less charge −0.13 e during Li intercalation compared to S atoms with charge transfer of −0.47 e due to the larger size of the 3p orbital of S atoms. Each Li atom contributes ~0.88–0.89 e during the intercalation process. The diffusion energy barrier for lithium atom intercalation is lower for Ti₂CS₂/graphene (0.27, 0.22, 0.12, and 0.18 eV) than for Ti₂CO₂/graphene (0.45, 0.40, 0.34, and 0.28 eV) when + nLi, <i>n</i> = 1, 2, 3, and 17, respectively. The CI-NEB study also confirms that the activation energy barrier decreases with the increase of intercalated Li atoms for both the heterostructures, indicating that Li atoms exhibit weak repulsive interaction. The positive open-circuit voltage (OCV) of less than 2.20 V indicates that both the heterostructures are useful as anode materials. The theoretical specific capacity is 302.36 mAh/g for Ti₂CO₂/graphene and 255.97 mAh/g for Ti₂CS₂/graphene. Ab initio MD simulations reveal that the Li diffusion rate is 8.4 × 10⁻⁷ and 8.5 × 10⁻⁷ cm²/s for Ti₂CO₂/graphene and Ti₂CS₂/graphene. Therefore, both the Ti₂CO₂/graphene and Ti₂CS₂/graphene heterostructures can be considered promising anode materials for Li-ion batteries due to their structural stability, lower diffusion energy barrier, high Li diffusion rate, and positive calculated average voltage of less than 2.2 V.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of Double-Pass Storage Solar Air Heater Using Two Types of Porous Media and Fin Plate","authors":"Taiser I. Saqar,&nbsp;Omer K. Ahmed,&nbsp;Omar Rafae Alomar,&nbsp;Sameer Algburi","doi":"10.1002/est2.70167","DOIUrl":"https://doi.org/10.1002/est2.70167","url":null,"abstract":"<div>\u0000 \u0000 <p>As a result of the climate changes occurring on the planet and the carbon emissions they cause, solar energy systems must be developed in order to achieve greater efficiency. This study examines the performance of double-pass solar air heaters (DPSAH) with and without porous media under forced convection. Two types of porous media, glass balls and river gravel, were tested. The results showed that double-pass solar air heater model DPSAHM-1, with porous media, achieved up to 91.5% thermal efficiency in summer, outperforming double-pass solar air heater model DPSAHM-2 by 5%–10%. These findings highlight the potential of porous media to improve heat transfer and efficiency in solar air heaters. Fins were added to both sides of the absorber in both models to increase the heat transfer area and enhance the coefficient. Experiments were conducted on both models during summer and winter, and the results were compared under the same conditions. Consequently, DPSAHM-1 proves more effective than DPSAHM-2 in forced airflow applications and is suitable for high-temperature applications, while DPSAHM-2 is more appropriate for other conditions.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid Cooling System of Lithium-Ion Battery Using Star-Shaped Channels and Phase-Change Materials","authors":"Khaleel Al Khasawneh,&nbsp;Aman Al Khatib","doi":"10.1002/est2.70173","DOIUrl":"https://doi.org/10.1002/est2.70173","url":null,"abstract":"<div>\u0000 \u0000 <p>Cooling lithium-ion batteries using phase change material and star-shaped channel for flowing fluid is presented in this paper. The proposed design is tested on six 21700 cylindrical lithium-ion battery cells. The six battery cells are placed in a case filled with wax as a phase change material, where this case is cooled using four water channels with star-shaped cross-section. The flow is assumed to be steady, fully developed, and laminar. This study is conducted using COMSOL Multiphysics 5.6 software, assuming lumped analysis for the batteries and incompressible flow for both wax and water. It was shown from the results that the temperature lowered by a range of 9.43°C to 11.07°C when discharged to 15% by 4C rate with the star-shaped channels and paraffin wax. While the temperature lowered by a range of 9.13°C to 10.51°C with paraffin wax and circular channels. When the study was carried out without any cooling method during discharge, battery 6 reached 39.528°C, while battery 1 reached 39.468°C. However, after cooling using star-shaped channels and paraffin wax case, the temperature of battery 6 dropped to 29.788°C, while battery 1 was 30.034°C, and the lowest temperature was 28.440°C for battery 5. The temperatures of the batteries with circular channels for cooling were recorded as 30.146°C, 30.339°C, and 28.996°C for batteries 6, 1, and 5, respectively. When paraffin wax was replaced by <i>n</i>-Octadecane wax, all battery temperatures dropped to approximately 27.4°C. The results showed that cooling using phase change material and star-shaped channels achieved the lowest temperatures compared to other cooling designs and methods. By comparing the present results with the published results, it was found that the present study is in good agreement with previous findings and shows notable improvements.</p>\u0000 </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}