Journal of energy storage最新文献

High-performance, flexible, fibrous supercapacitors from natural jute fibers

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116500

Yi Tian, Jie Ouyang, Lixin Wang, Yuzhu Wang, Mengting Cheng, Wei Yin, Xi Ren, Zhexuan Liu, Jianhua Luo, Yongfeng Luo

{"title":"High-performance, flexible, fibrous supercapacitors from natural jute fibers","authors":"Yi Tian, Jie Ouyang, Lixin Wang, Yuzhu Wang, Mengting Cheng, Wei Yin, Xi Ren, Zhexuan Liu, Jianhua Luo, Yongfeng Luo","doi":"10.1016/j.est.2025.116500","DOIUrl":"10.1016/j.est.2025.116500","url":null,"abstract":"<div><div>The utilization of natural fibers in eco-friendly supercapacitors exhibits significant potential within the realm of flexible and wearable energy storage systems. Here, a conductive composite fiber, utilizing natural jute fiber as the base material, is fabricated through a straightforward process that involves the impregnation of reduced graphene oxide (rGO) solution followed by the chemical in-situ polymerization of polyaniline (PANI/rGO@JF). The resultant fiber can be directly employed as a fibrous electrode in supercapacitors. PANI possesses remarkable electrochemical properties, whereas rGO enhances rapid electron transport pathways. The PANI-7/rGO@JF electrodes, synthesized via a 7-h polymerization process that leverages synergistic effects, exhibit superior characteristics. As a result, the resulting fibrous supercapacitor achieves an impressive specific capacitance of 229 F g<sup>−1</sup>. Furthermore, the composite fiber exhibits high knittability, and the integrated supercapacitor exhibits an exceptional specific capacitance of 235.1 F g<sup>−1</sup>. This environmentally friendly and efficient energy storage device, utilizing natural jute fibers renowned for their superior weavability, demonstrates considerable potential for future portable applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116500"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Organic-inorganic composite electrolyte with in-situ polymerization poly(1,3-dioxolane) toward high-performance quasi-solid-state lithium metal batteries

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116459

Lingguang Yi, Xiaoyi Chen, Jiajia Huang, Jiali Liu, Honghui Hu, Huahui Zhao, Tianjing Wu, Li Liu, Xianyou Wang

{"title":"Organic-inorganic composite electrolyte with in-situ polymerization poly(1,3-dioxolane) toward high-performance quasi-solid-state lithium metal batteries","authors":"Lingguang Yi, Xiaoyi Chen, Jiajia Huang, Jiali Liu, Honghui Hu, Huahui Zhao, Tianjing Wu, Li Liu, Xianyou Wang","doi":"10.1016/j.est.2025.116459","DOIUrl":"10.1016/j.est.2025.116459","url":null,"abstract":"<div><div>The sodium superionic conductor structure (NASICON) Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) is a promising active filler for its high ionic conductivity and air stability. Nonetheless, its large-scale application remains limited by chemical instability with lithium anodes. Herein, a novel poly(vinylidene fluoride-<em>co</em>-hexafluoropropylene) (PVDF-HFP)-based composite polymer electrolyte (CPE), designated as PPALx-D, is synthesized via a blade-casting method. This CPE comprises a conductive poly(poly(ethylene gly<em>co</em>l) methyl ether methacrylate-co-(lithium 2-acrylamido-2-methylpropanesulfonic acid)) (P(PEGMEMA-co-AMPSLi)) matrix, inorganic LATP filler, and an in-situ polymerized 1,3-dioxolane (DOL) artificial interlayer. The physicochemical and electrochemical properties of the as-prepared CPEs are systematically characterized. Results show that the PPAL5-D CPE, despite being thinner and containing less liquid electrolyte, provides faster organic-inorganic Li<sup>+</sup> transport channels and exhibits superior electrochemical compatibility with Li metal anodes. The PPAL5-D CPE achieves a high room-temperature (RT) ionic conductivity of 3.47× 10<sup>−4</sup> S cm<sup>−1</sup> and a high Li<sup>+</sup> transference number of 0.61. The assembled LFP|PPAL5-D|Li battery demonstrates significantly improved cycling stability, delivering a discharge capacity of 131.5 mAh g<sup>−1</sup> at 1C for 400 cycles at RT. This study proposes a feasible methodology for preparing organic-inorganic composite electrolytes, advancing the development of quasi-solid-state Li metal batteries (LMBs).</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116459"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Case study on flywheel energy storage systems: LPTN-based transient thermal analysis

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116319

Yuanyuan Jiao , Xingjian Dai , Yifei Wang , Lu Wei , Hualiang Zhang , Haisheng Chen

{"title":"Case study on flywheel energy storage systems: LPTN-based transient thermal analysis","authors":"Yuanyuan Jiao , Xingjian Dai , Yifei Wang , Lu Wei , Hualiang Zhang , Haisheng Chen","doi":"10.1016/j.est.2025.116319","DOIUrl":"10.1016/j.est.2025.116319","url":null,"abstract":"<div><div>This study established a lumped parameter thermal network model for vertical flywheel energy storage systems, considering three critical gaps in conventional thermal modeling: oversimplified radiative heat transfer within sealed chambers, unquantified dynamic losses, including rotor eddy currents and flywheel friction, and transient hysteresis in stator water jacket cooling. Validated through extreme continuous charge-discharge experiments of 200–400 kW, the simulated temperatures exhibit a maximum deviation of 2 °C at steady-state, demonstrating superior accuracy in capturing both spatial distributions of the system and the temporal variations of coolant temperatures. Furthermore, most of the exergy loss in the heat transfer process is concentrated in the motor stator, casing, and cooling water. Improving the heat transfer paths in these areas would help enhance overall system efficiency. The outcomes offer valuable insights for correlative research on flywheel energy storage system thermal management technologies, providing significant references for the design and optimization of the system.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116319"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RUL-Mamba: Mamba-based remaining useful life prediction for lithium-ion batteries

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116376

Jiahui Huang , Lei Liu , Hongwei Zhao , Tianqi Li , Bin Li

{"title":"RUL-Mamba: Mamba-based remaining useful life prediction for lithium-ion batteries","authors":"Jiahui Huang , Lei Liu , Hongwei Zhao , Tianqi Li , Bin Li","doi":"10.1016/j.est.2025.116376","DOIUrl":"10.1016/j.est.2025.116376","url":null,"abstract":"<div><div>Lithium-ion batteries play a crucial role in the fields of renewable energy and electric vehicles. Accurately predicting their Remaining Useful Life (RUL) is essential for ensuring safe and reliable operation. However, achieving precise RUL predictions poses significant challenges due to the complexities of degradation mechanisms and the impact of operational noise, particularly the capacity regeneration phenomenon. To address these issues, we propose a lithium-ion battery RUL prediction model named RUL-Mamba, which is based on the Mamba-Feature Attention Network (FAN)-Gated Residual Network (GRN). This model employs an encoder-decoder architecture that effectively integrates the Mamba module, FAN network, and GRN network. Mamba demonstrates superior temporal representation capabilities alongside efficient inference properties. The constructed FAN network leverages a feature attention mechanism to efficiently extract key features at each time step, enabling the Mamba block in the encoder to effectively capture information related to capacity regeneration from historical capacity sequences. The designed GRN network adaptively processes the decoded features output by the Mamba blocks in the decoder through a gating mechanism, accurately modeling the nonlinear mapping relationship between the decoded feature vector and the prediction target. Compared to state-of-the-art (SOTA) time series forecasting models on three battery degradation datasets from NASA, Oxford and Tongji University, the proposed model not only achieves SOTA predictive performance across various prediction starting points, with a maximum accuracy improvement of 42.5 % over existing models, but also offers advantages such as efficient training, fast inference and being less influenced by the prediction starting point. The source code and datasets are available at <span><span>https://github.com/USTC-AI4EEE/RUL-Mamba</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116376"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on overcharge mitigations and thermal runaway risk of 18650 lithium-ion batteries

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116372

W.H. Yan , W.X. Huang , Y. Yang , Z.W. Wei , H.S. Zhen , Y. Lin

{"title":"Research on overcharge mitigations and thermal runaway risk of 18650 lithium-ion batteries","authors":"W.H. Yan , W.X. Huang , Y. Yang , Z.W. Wei , H.S. Zhen , Y. Lin","doi":"10.1016/j.est.2025.116372","DOIUrl":"10.1016/j.est.2025.116372","url":null,"abstract":"<div><div>The safety issues of lithium-ion batteries are becoming increasingly severe, and overcharging is one of the primary abuse conditions that can lead to safety incidents in lithium batteries. Overcharging can cause the internal heat of the battery to rise uncontrollably, potentially resulting in thermal runaway under extreme conditions. To thoroughly analyze the impact of protection devices on the overcharging behavior of lithium batteries under different charging rates, this study selected eight types of commercial 18650 ternary lithium batteries. The study systematically evaluated the thermal runaway risk of these batteries under overcharge conditions of 10 V-3 A low current and 10 V-6 A high current. After the overcharge experiments, the batteries were disassembled to analyze the performance of their thermal runaway protection mechanisms during overcharging. The results indicate that under the 10 V-3 A low-current overcharge conditions, the overcharge protection mechanisms of the batteries were effective in preventing thermal runaway. However, under the 10 V-6 A high-current overcharge conditions, the overcharge protection mechanisms failed to effectively curb the occurrence of thermal runaway. Furthermore, the study analyzed the thermal runaway risk of multiple parallel cells and assessed the impact of two typical faults, short charging and interrupted charging, on the thermal runaway risk of the battery pack. These findings provide a scientific basis for further enhancing the safety of lithium-ion batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116372"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced thermal performance of binary eutectic chloride salt by integrating nanoparticles: A molecular dynamics study

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116423

Zhening Zhang, Meiqian Chen

{"title":"Enhanced thermal performance of binary eutectic chloride salt by integrating nanoparticles: A molecular dynamics study","authors":"Zhening Zhang, Meiqian Chen","doi":"10.1016/j.est.2025.116423","DOIUrl":"10.1016/j.est.2025.116423","url":null,"abstract":"<div><div>Chloride salts are considered the most promising high-temperature thermal energy storage media for next-generation concentrating solar power (CSP) plants. To enhance the thermal performance of NaCl-KCl eutectic salt phase change material (PCM), composite phase change materials (CPCMs) were developed by separately integrating Al<sub>2</sub>O<sub>3</sub>, CuO, and SiO<sub>2</sub> with PCM. The microstructure evolution and thermophysical properties of the materials were investigated by means of molecular dynamics (MD) simulations, the simulation results were in good agreement with the available experimental data, and the mechanism of thermal performance enhancement was elucidated from a microscopic perspective. The figure of merit (<em>FOM</em>) was introduced as an evaluation criterion for the thermal characteristics of the materials. CuO nanoparticles exhibited the most significant effect on the thermal conductivity of PCM, with a maximum increase of 28.1 %. Al<sub>2</sub>O<sub>3</sub> nanoparticles appeared the best performance in improving the specific heat capacity of PCM, with an increase of 9.2 %. Although the integration of nanoparticles increased material viscosity, Al<sub>2</sub>O<sub>3</sub> nanoparticles induced only a 14.2 % rise in viscosity of the base salt at high temperature. Based on microscopic energy analysis, the thermal performance enhancement was attributed to the increase in average potential energy of the atoms in the system, which would strengthen the interatomic interactions. The <em>FOM</em> confirmed that Al<sub>2</sub>O<sub>3</sub> nanoparticles held the greatest potential for application in the optimization of the overall performance of CSP power plants. This study is expected to provide valuable guidance for the design and application of molten salt-based high-temperature thermal energy storage materials.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116423"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of hierarchical nanoparticle-assembled magnesium‑nickel‑cobalt oxides@carbon composites nanorods for high-performance supercapacitor

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-04-01 DOI: 10.1016/j.est.2025.116501

Guixin Man , Feng Zhang , Na Li , Yu Song , Xiuying Wang , Shuyan Song

{"title":"Construction of hierarchical nanoparticle-assembled magnesium‑nickel‑cobalt oxides@carbon composites nanorods for high-performance supercapacitor","authors":"Guixin Man , Feng Zhang , Na Li , Yu Song , Xiuying Wang , Shuyan Song","doi":"10.1016/j.est.2025.116501","DOIUrl":"10.1016/j.est.2025.116501","url":null,"abstract":"<div><div>Construction of hierarchical nanostructured multimetallic oxides@carbon composite is an effective strategy to develop advanced electrode material for high performance asymmetric supercapacitors. In this paper, we synthesized a series of Mg-Ni-Co oxides@carbon composites via calcination of multimetal-ethylenediamine tetraacetic acid (EDTA) coordination complexes in air. We revealed the different coordination abilities of Mg<sup>2+</sup>, Co<sup>2+</sup> and Ni<sup>2+</sup> with EDTA by analyzing the compositions of these composites and pointed out the presence of Ni<sup>2+</sup> is required for the formation of rod-like structures. More importantly, we found trimetal-EDTA complexes derivatives exhibit better electrochemical performance than the related bimetal-EDTA complexes derivatives due to the synergistic effects of structure and composition. An asymmetric supercapacitor assembled with the optimal trimetal-EDTA complex derivative (NiCo<sub>2</sub>O<sub>4</sub>/NiO/MgO/C composite) as positive electrode exhibited high energy density (22.1 Wh kg<sup>−1</sup> at a power density of 375 W kg<sup>−1</sup>) and excellent cycling stability (93.8 % after 10,000 cycles). This work provides meaningful insights into the design of high-performance electrode materials derived from metal-EDTA complexes.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116501"},"PeriodicalIF":8.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Life cycle assessment and CFD evaluation of an innovative solar desalination system with PCM and geothermal system

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-03-31 DOI: 10.1016/j.est.2025.116116

Rashed Bahramei, Hadi Samimi-Akhijahani, Payman Salami, Naser Behroozi-Khazei

{"title":"Life cycle assessment and CFD evaluation of an innovative solar desalination system with PCM and geothermal system","authors":"Rashed Bahramei, Hadi Samimi-Akhijahani, Payman Salami, Naser Behroozi-Khazei","doi":"10.1016/j.est.2025.116116","DOIUrl":"10.1016/j.est.2025.116116","url":null,"abstract":"<div><h3>Objective</h3><div>This study introduces a novel solar desalination system supported by a parabolic trough collector (PTC) to enhance thermal efficiency and reduce temperature fluctuations. The system utilizes solar energy to purify water, mimicking the natural water cycle, while integrating Phase Change Material (PCM) to optimize thermal energy storage and utilization during nighttime or cloudy conditions. To improve system performance, the spraying unit was analyzed using the Computational Fluid Dynamics (CFD) method. Additionally, a Life Cycle Assessment (LCA) and Life Cycle Impact Assessment (LCIA) were conducted to evaluate the system's environmental impact, focusing on global warming and pollution levels. The results showed that the highest volume fraction (25.8 %) was achieved in the spraying rate of 0.75 l/min at <em>t</em> = 10.254 s, with CFD simulation data aligning with test data at a high accuracy level (R<sup>2</sup> > 98.2 %). The adoption of PCM reduced environmental pollutant emissions by increasing thermal energy efficiency. However, environmental pollution was significantly influenced by the use of copper pipes and cables, contributing 9.81 % to ozone layer depletion, 15.6 % to global warming, 28.9 % to non-renewable energy consumption, and 61.7 % to mineral extraction. The fresh water production from the proposed desalination system with PCM was 978 cc, with the improvement of at least 10.15 % compared to the system without PCM. The integration of PCM in the desalination system improved thermal performance, reduces energy waste, and improves sustainability by lowering pollutant emissions. Compared to conventional electrical desalination systems, the proposed system demonstrates superior efficiency due to its reliance on renewable energy.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116116"},"PeriodicalIF":8.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alkali-activated fly ash composite NaNO3 thermal energy storage materials: Low-temperature preparation and high-temperature stability

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-03-31 DOI: 10.1016/j.est.2025.116424

Zhigang Qiao, Hui Li, Jiale Wang, Qing Wang, Zhiming Xu, Yuan Zhou, Wukui Zheng

{"title":"Alkali-activated fly ash composite NaNO3 thermal energy storage materials: Low-temperature preparation and high-temperature stability","authors":"Zhigang Qiao, Hui Li, Jiale Wang, Qing Wang, Zhiming Xu, Yuan Zhou, Wukui Zheng","doi":"10.1016/j.est.2025.116424","DOIUrl":"10.1016/j.est.2025.116424","url":null,"abstract":"<div><div>The development of high-performance medium- to high-temperature phase change thermal storage materials through simple preparation methods is essential for advancing thermal energy storage (TES) technologies. However, the conventional cold-pressing sintering techniques face limitations due to excessively high sintering temperatures and poor skeleton stability at elevated temperatures. In this study, an innovative approach was employed to fabricate shape-stabilized phase change materials (SSPCMs) by encapsulating NaNO<sub>3</sub> using alkali-activated fly ash (AAF) as the skeleton support materials (SSMs) under low-temperature. The results demonstrated that SSPCMs maintained stable morphology under thermal cycling without molten salt leakage and exhibited excellent chemical compatibility. The maximum encapsulation capacity of molten salt reached 70 %, with a melting enthalpy of 114.82 J/g, and retained a high value of 105.08 J/g after 100 thermal cycles. The SSPCMs exhibited compressive strength up to 5.50 MPa at 350 °C, meeting practical application requirements. SEM and MIP analyses revealed that SSMs formed by AAF provided a robust foundation for encapsulation. During thermal cycling, NaNO<sub>3</sub> migrated into micro-pores of SSMs driven by capillary forces, further enhancing the effective encapsulation of NaNO<sub>3</sub>. This study presents a novel low-temperature preparation method for SSPCMs using AAF, significantly improving the high-temperature stability of medium- to high-temperature phase change thermal storage materials. The approach offers a cost-effective and scalable solution for advancing TES technologies.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116424"},"PeriodicalIF":8.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D ZnO hexagonal prism-decorated 2D MXene-based high-performance flexible symmetric supercapacitor

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-03-31 DOI: 10.1016/j.est.2025.116366

Sahil Jangra , Shilpi Sengupta , Azam Raza , Aadil Rashid Lone , Bhushan Kumar , Manab Kundu , Iftikhar Hussain , Kavita Pandey , Subhankar Das , M.S. Goyat

{"title":"3D ZnO hexagonal prism-decorated 2D MXene-based high-performance flexible symmetric supercapacitor","authors":"Sahil Jangra , Shilpi Sengupta , Azam Raza , Aadil Rashid Lone , Bhushan Kumar , Manab Kundu , Iftikhar Hussain , Kavita Pandey , Subhankar Das , M.S. Goyat","doi":"10.1016/j.est.2025.116366","DOIUrl":"10.1016/j.est.2025.116366","url":null,"abstract":"<div><div>Flexible, high-performance supercapacitors are critical for the future generation of portable and wearable electronics. In this research, we present, for the first time, the synthesis and design of a flexible supercapacitor device using ZnO hexagonal prism-decorated MXene synthesized via a hydrothermal method, serving as a highly efficient electrode material. Pristine MXene suffers from restacking, limiting its electrochemical performance; however, decorating it with ZnO hexagonal prism mitigates this issue by enhancing interlayer spacing and improving ion transport. The unique hexagonal prism morphology of ZnO, combined with the layered MXene structure, significantly enhances electrical conductivity while preventing restacking. The resulting material achieved an impressive specific capacitance of 140 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, greatly surpassing pristine MXene (73 F g<sup>−1</sup>). Furthermore, it exhibited outstanding cycling stability, with 97.2 % capacitance retention after 12,000 cycles at 3 A g<sup>−1</sup>. A flexible symmetric supercapacitor fabricated using this material demonstrated excellent mechanical flexibility, maintaining reliable electrochemical performance under bending angles of 0°, 60°, 90°, and 180°. The device also delivered a high energy density of 6.33 Wh kg<sup>−1</sup> and a power density of 600 W kg<sup>−1</sup>, showcasing the potential of ZnO hexagonal prism decorated MXene as a promising material for advanced energy storage applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"120 ","pages":"Article 116366"},"PeriodicalIF":8.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0