Energy technology最新文献

Eutectic Diol-Acid Phase Change Composite Reinforced With Expanded Graphite for High Performance Thermal Management 用于高性能热管理的膨胀石墨增强共晶二醇酸相变复合材料

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-25 DOI: 10.1002/ente.70692

Yuxuan Lin, Kai Fu, Songping Mo, Yanping Du, Zhi Yang, Lisi Jia, Ying Chen

{"title":"Eutectic Diol-Acid Phase Change Composite Reinforced With Expanded Graphite for High Performance Thermal Management","authors":"Yuxuan Lin, Kai Fu, Songping Mo, Yanping Du, Zhi Yang, Lisi Jia, Ying Chen","doi":"10.1002/ente.70692","DOIUrl":"https://doi.org/10.1002/ente.70692","url":null,"abstract":"A bio-based binary eutectic phase change material (PCM) composed of 1,10-decanediol (DDL) and sebacic acid (SEA) was developed for passive thermal management of electronic devices. The eutectic composition was optimized through theoretical calculations and experimental validation to achieve a high latent heat. Expanded graphite (EG) was incorporated as a highly conductive supporting matrix to fabricate DDL–SEA/EG composite PCMs (CPCMs). The thermophysical properties, shape stability, thermal cycling reliability, and thermal management performance of the CPCMs were systematically evaluated. Results demonstrate that the CPCM with 12 wt% EG achieves a thermal conductivity of 9.305 W·m−1·K−1 (16.5-fold enhancement) and a latent heat of 194.1 kJ·kg−1, while maintaining high shape stability with negligible leakage. Furthermore, the CPCM retains 98.5% and 99.6% of its initial melting and solidification enthalpy after 200 thermal cycles. Thermal management tests using a simulated electronic heat source reveal that the DDL–SEA/EG CPCM prolongs the time to reach 80 °C from 285 to 1400 s (a 391% increase) and suppresses the steady-state operating temperature by 10.3 °C. These findings indicate that the DDL–SEA/EG CPCM effectively resolves the tradeoff between energy storage capacity and thermal conductivity, presenting a highly promising, sustainable material for advanced passive electronics thermal management.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Epitaxial Self-Assembly of Flower-Like Ni4Mo–TiO2 Composite for Enhancing the Hydrogen Storage Performance of MgH2 花状Ni4Mo-TiO2复合材料外延自组装提高MgH2储氢性能

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-25 DOI: 10.1002/ente.70691

Gangqiang Wu, Lei Jiang, Xizhe Lu, Yuanfei Zheng, Ying Yu, Chao Li, Zhongmin Lang

{"title":"Epitaxial Self-Assembly of Flower-Like Ni4Mo–TiO2 Composite for Enhancing the Hydrogen Storage Performance of MgH2","authors":"Gangqiang Wu, Lei Jiang, Xizhe Lu, Yuanfei Zheng, Ying Yu, Chao Li, Zhongmin Lang","doi":"10.1002/ente.70691","DOIUrl":"https://doi.org/10.1002/ente.70691","url":null,"abstract":"In this study, a flower-like composite catalyst consisting of Ni4Mo supported on TiO2 was prepared and introduced into MgH2. It was found that the composite catalyst exhibits superior catalytic effects compared to the individual addition of Ni4Mo or TiO2 as separate components. Specifically, the MgH2-10 wt% Ni4Mo–TiO2 composite initiates hydrogen desorption at 200.6 °C, which is 71.2 °C lower than that of pure ball-milled MgH2. Kinetic analysis reveals that the composite catalyst reduces the activation energy of MgH2 to 73.30 kJ/mol, whereas the activation energy for MgH2 with individual Ni4Mo or TiO2 is 83.99 or 77.2 kJ/mol. Further investigation indicates that during hydrogen absorption/desorption cycles, the alloy structure of Ni4Mo is gradually disrupted, leading to the formation of active species such as TiO2, Mg2Ni, and Mo. Compared with the individual Ni4Mo and TiO2 catalysts, the Ni4Mo-TiO2 composite exhibits superior catalytic performance due to the synergistic interaction between the two components, thereby effectively enhancing the hydrogen storage performance of MgH2.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tailoring the Magnetic-Field-Assisted Oxygen Evolution Reaction Activity of Sr3YCo4O12−δ Perovskite via Sintering Optimization 通过烧结优化调整Sr3YCo4O12−δ钙钛矿的磁场辅助析氧反应活性

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-24 DOI: 10.1002/ente.70700

Hongyuan Song, Linjie Dong, Ziwei Zheng, Yanyan Tang, Lan Yu

{"title":"Tailoring the Magnetic-Field-Assisted Oxygen Evolution Reaction Activity of Sr3YCo4O12−δ Perovskite via Sintering Optimization","authors":"Hongyuan Song, Linjie Dong, Ziwei Zheng, Yanyan Tang, Lan Yu","doi":"10.1002/ente.70700","DOIUrl":"https://doi.org/10.1002/ente.70700","url":null,"abstract":"The room-temperature ferromagnetic Sr3YCo4O12−δ(314-SYCO) provides an ideal platform for investigating magnetic-field-assisted catalytic performance. Herein, a series of 314-SYCO polycrystals were synthesized via a sol–gel route by systematically varying the sintering temperature (800, 1000, and 1200 °C) and duration (5–20 h) to elucidate the effects of thermal history on Co valence states, ferromagnetic properties, and magnetic-field-enhanced oxygen evolution reaction (OER) activity. At 1000 °C, extending the sintering duration from 5 to 20 h yields an ordered tetragonal phase, accompanied by a significant increase in the Co3+ fraction from 73.3% to 98.6%. The Curie temperature reaches ~336 K at 15 h, while the 20 h sample exhibits a near-saturation magnetization of 5.07 emu g−1, nearly twice that of the 5 and 10 h samples. Under a 200 mT magnetic field, the OER kinetics exhibit a pronounced ferromagnetism-dependent enhancement, leading to reductions in overpotential of 8.0–19.7 mV at 10 mA cm−2. The sample sintered for 20 h exhibits the best performance, achieving a minimum overpotential of 343.8 mV together with a significant enhancement in intrinsic specific activity. Optimization of the sintering process effectively tunes the Co valence states and ferromagnetic ordering of 314-SYCO, thereby enhancing magnetic-field-assisted OER activity.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multiscale Regulation of Metal–Organic Frameworks in Lithium-Ion Battery Separators: Mechanism, Strategy, and Performance Optimization 锂离子电池隔膜中金属-有机骨架的多尺度调控：机制、策略和性能优化

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-19 DOI: 10.1002/ente.70675

Yongjia Yu, Lu Jin, Jiayu Cheng, Jinye Gao, Xiaomin Kang

{"title":"Multiscale Regulation of Metal–Organic Frameworks in Lithium-Ion Battery Separators: Mechanism, Strategy, and Performance Optimization","authors":"Yongjia Yu, Lu Jin, Jiayu Cheng, Jinye Gao, Xiaomin Kang","doi":"10.1002/ente.70675","DOIUrl":"https://doi.org/10.1002/ente.70675","url":null,"abstract":"Lithium-ion polypropylene (PP) separators limit high-energy Li-ion batteries due to poor thermal stability, low wettability, and weak dendrite suppression. Metal–organic frameworks (MOFs) provide a viable solution through tunable pores, high surface area, and versatile surface chemistry. This review summarizes multiscale regulation strategies for MOFs-modified PP separators. It classifies applicable MOFs into three topological types—ZIF, UiO, and HKUST—and analyzes their distinct mechanisms in enhancing ion transport and interfacial dynamics. Four primary fabrication techniques (coating, blending, in situ growth, and composite construction) are systematically compared for their suitability and performance outcomes. Key challenges remain, including high costs, poor interface compatibility, and insufficient long-term stability. Future development requires integrating multiscale structural engineering, intelligent dynamic interfaces, and cost-effective green manufacturing. This review offers a practical framework for designing advanced separators for next-generation high-safety, high-energy-density Li-ion batteries.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Physical Properties of Hf-Based MXenes Monolayers for Optoelectronic and Clean Energy 光电子和清洁能源用hf基MXenes单层膜的物理性质

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-19 DOI: 10.1002/ente.70686

EL Mokhtar Darkaoui, Kamal Elasri, Mourad Baouahi, Abderrahman Abbassi, Abdelmalek Dahchour, Souad Taj, Bouzid Manaut

{"title":"Physical Properties of Hf-Based MXenes Monolayers for Optoelectronic and Clean Energy","authors":"EL Mokhtar Darkaoui, Kamal Elasri, Mourad Baouahi, Abderrahman Abbassi, Abdelmalek Dahchour, Souad Taj, Bouzid Manaut","doi":"10.1002/ente.70686","DOIUrl":"https://doi.org/10.1002/ente.70686","url":null,"abstract":"In this work, the structural, dynamical, electronic, optical, and thermodynamic properties of Hf2CCl2 and Hf2CBr2 MXene monolayers were investigated using density functional theory, the HSE06 hybrid functional, and ab initio molecular dynamics (AIMD) simulations. Phonon dispersion calculations together with AIMD simulations at 300 K confirm the dynamical and thermal stability of both monolayers. The optimized structures exhibit lattice constants of 3.411 and 3.479 Å and cohesive energies of −6.830 and −6.513 eV/atom for Hf2CCl2 and Hf2CBr2, respectively. Electronic structure calculations indicate that both compounds are direct-bandgap semiconductors with HSE06 bandgaps of 0.82 and 0.79 eV. These values correspond to the near-infrared spectral region, making the two monolayers relevant for infrared optoelectronic applications. The calculated electron and hole effective masses are relatively small, suggesting favorable charge-transport characteristics. In addition, both materials exhibit strong optical absorption, reaching values on the order of 105 cm−1 in the UV–visible region. Thermodynamic analysis further shows that the two systems remain stable over a wide temperature range up to 1000 K. Overall, these results highlight the potential of Hf2CCl2 and Hf2CBr2 monolayers for applications in optoelectronic and energy-conversion technologies.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Joint SOC-Temperature Active Equalization for Lithium-Ion Battery Packs via a Dynamic Grouping Topology 基于动态分组拓扑的锂离子电池组soc -温度联合主动均衡

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-14 DOI: 10.1002/ente.70687

Zehao Xiao, Siguang An, Guoping Zou

{"title":"Joint SOC-Temperature Active Equalization for Lithium-Ion Battery Packs via a Dynamic Grouping Topology","authors":"Zehao Xiao, Siguang An, Guoping Zou","doi":"10.1002/ente.70687","DOIUrl":"https://doi.org/10.1002/ente.70687","url":null,"abstract":"Battery equalization technology can enhance the consistency of battery packs and extend their service life. However, most existing equalization strategies tend to focus on increasing the equalization speed while neglecting temperature variations among individual cells, which poses significant safety risks. To address these issues, this paper proposes a joint state of charge (SOC)-temperature active equalization strategy based on a dynamic grouping topology. First, a dynamic grouping topology integrating a reconfigurable circuit and a flying-inductor is proposed, enabling energy transfer between any cells. Second, discrete dynamic models for SOC and temperature are respectively constructed, and the deviations of each variable from its mean are combined to form the optimization objective through an adaptive weighting method. Then, a Tent-enhanced fireworks algorithm (Tent-EFWA) is applied to optimize the charge/discharge decisions for each cell and generate the corresponding PWM control signals. Finally, simulation studies are conducted in MATLAB/Simulink. Compared with the traditional mean-difference strategy, the temperature difference is reduced by 38.71% under static conditions, while under charging and discharging conditions, it is reduced by 48.35% and 58.62%, respectively. These results verify the effectiveness of the proposed strategy in improving both the consistency and safety of battery packs.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Synergistic Effects of rGO and Mg–Mn Co-Doping on the Electrochemical Performance of Zinc Ferrite-Based Supercapacitors 氧化石墨烯和镁锰共掺杂对锌铁氧体基超级电容器电化学性能的协同效应

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-13 DOI: 10.1002/ente.70666

Abu Fahad, Jitendra K. Yadav, Bharti Rani, Priyanka Saini, Pragya Mishra, Ambesh Dixit, Manoj K. Singh

{"title":"Synergistic Effects of rGO and Mg–Mn Co-Doping on the Electrochemical Performance of Zinc Ferrite-Based Supercapacitors","authors":"Abu Fahad, Jitendra K. Yadav, Bharti Rani, Priyanka Saini, Pragya Mishra, Ambesh Dixit, Manoj K. Singh","doi":"10.1002/ente.70666","DOIUrl":"https://doi.org/10.1002/ente.70666","url":null,"abstract":"Developing high-performance energy storage devices is essential to meet the rising energy demands. The present work demonstrates the improved electrochemical properties of rGO/ZFO by Mg, Mn codoping approach. The incorporation of rGO (reduced graphene oxide) with dual-doped zinc ferrite significantly improves charge storage behavior, thereby enhancing the capacitance. The doping of Mg and Mn is ensured by X-ray diffraction (XRD), while Brunauer–Emmett–Teller (BET) shows the enhanced surface area due to doping. Dielectric permittivity (ε) and tangent loss (tan δ) were analyzed over different frequency ranges. Electrochemical performance was evaluated using both three-electrode and symmetric coin-cell (SCC) configurations. In the 3-electrode system, the specific capacitance (Csp) was found to be 157.39 and 376.68 F g−1 while corresponding SCC devices deliver 68.17 and 90.57 F g−1 at 1 mV s−1. The energy density (ED) and powder density (PD) was 8.22 and 14.26 Wh kg−1 and 28.7 and 28.8 W kg−1 at 0.04 A g−1 for rGO/ZFO and Mg, Mn doped rGO/ZFO SCC, respectively. Moreover, the Mg, Mn doped rGO/ZFO SCC device shows an exceptional capacitance retention of 96% after 10 000 cycles at 0.4 A g−1. These results highlight the effectiveness of dual doping and rGO incorporation in advancing zinc ferrite-based supercapacitors (SCs).","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Staged Combustion Characteristics of Microgas Turbine Fired by Hydrogen–Ammonia Blended Fuel 氢氨混合燃料微燃气轮机分级燃烧特性研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-13 DOI: 10.1002/ente.70689

Jiale Peng, Cheng Yang, Hua Xiao

{"title":"Staged Combustion Characteristics of Microgas Turbine Fired by Hydrogen–Ammonia Blended Fuel","authors":"Jiale Peng, Cheng Yang, Hua Xiao","doi":"10.1002/ente.70689","DOIUrl":"https://doi.org/10.1002/ente.70689","url":null,"abstract":"Three-dimensional numerical simulations were performed to investigate the effects of the hydrogen blending ratio in the hydrogen–ammonia blended fueland the primary-zone equivalence ratio, on combustion characteristics and gas composition in a 50 kW micro gas turbine combustor. The results indicate that increasing the primary-zone equivalence ratio extends the recirculation zone and reduces the flow velocity in the combustor flow field, which is detrimental to effective mixing and complete combustion of the blended fuel. Meanwhile, increment in both the hydrogen blending ratio and the primary-zone equivalence ratio leads to higher global and peak temperatures, thereby promoting thermal NOx formation. Under the operating condition with a hydrogen blending ratio of Y = 0.5, when the primary-zone equivalence ratio increases from 1.0 to 1.6, NO emissions decrease from 693 to 603 ppm when normalized to an oxygen concentration of 15%. However, the overall NO emissions still far exceed the national limit of 25 ppm, indicating that postcombustion treatment such as selective catalytic reduction (SCR) is required. The distribution of OH radicals closely overlaps with the NO formation region, highlighting their critical role in NO generation.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on Corrosion and Thermal Alteration of MgAl2O4 and MgO Ceramics With Lead at 750 °C for Use in High-Temperature Thermal Energy Storage 含铅MgAl2O4和MgO陶瓷在750℃高温下的腐蚀和热蚀变研究

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-13 DOI: 10.1002/ente.70662

Margaux Zehnder, Anisa Purwitasari, Annette Heinzel, Klarissa Niedermeier

{"title":"Study on Corrosion and Thermal Alteration of MgAl2O4 and MgO Ceramics With Lead at 750 °C for Use in High-Temperature Thermal Energy Storage","authors":"Margaux Zehnder, Anisa Purwitasari, Annette Heinzel, Klarissa Niedermeier","doi":"10.1002/ente.70662","DOIUrl":"https://doi.org/10.1002/ente.70662","url":null,"abstract":"Thermal-energy-storage (TES) systems are promising for decarbonizing industry by storing waste heat generated by high-temperature processes. Used as heat transfer fluid (HTF), liquid-metal-based TES offer a broad liquid operating range and high thermal conductivity, making them especially attractive. Directly combining a solid storage material with metallic heat-transfer fluid in a packed bed further increases stored energy while reducing the volume of liquid metal. Ceramics can be used as storage materials. However, liquid metals are highly corrosive. This study investigates the corrosion behavior of two grades of magnesium aluminate spinel (alumina-rich spinel, fused spinel) and three grades of magnesium oxide (94%, 97%, and 99% purity) exposed to static liquid lead at 750 °C. The materials were analyzed using scanning electron microscopy and X-ray diffraction. The results show that all samples performed well overall. MgO showed better resistance than the tested spinels, with the highest-grade purity performing best. In all three grades, the magnesium oxide phase was stable; only the various calcium silicate phases observed at the grain boundaries reacted with Pb. Regarding the spinel, the fused one displayed cracks, and the alumina-rich one displayed Pb penetration and thermal alteration, resulting in a transformation of Mg0.38Al0.62(Al1.79)O4, MgO0.388Al2.408O4, and corundum Al2O3, to ((Mg4Al0.6)Al1.8O4).","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.70662","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Properties of Self-Supporting Ultra-Flexible HCNT/PANI Aerogel Electrodes With Different Thicknesses for Supercapacitors 超级电容器用不同厚度自支撑超柔性HCNT/PANI气凝胶电极的电化学性能

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-10-13 DOI: 10.1002/ente.70685

Yanzhi Cai, Yunge Jiang, Yuhan Wang, Xiaohang Chen, Laifei Cheng, Xinyu Qian, Hui Ding, Mingshu Bai, Fanfan Wei

{"title":"Electrochemical Properties of Self-Supporting Ultra-Flexible HCNT/PANI Aerogel Electrodes With Different Thicknesses for Supercapacitors","authors":"Yanzhi Cai, Yunge Jiang, Yuhan Wang, Xiaohang Chen, Laifei Cheng, Xinyu Qian, Hui Ding, Mingshu Bai, Fanfan Wei","doi":"10.1002/ente.70685","DOIUrl":"https://doi.org/10.1002/ente.70685","url":null,"abstract":"The development of electrode materials that combine high capacitance with flexibility is crucial for wearable electronics. This work enables in situ growth of polyaniline (PANI) in the form of nanowires, nanosheets, and oriented nanoparticles within an acidified carbon nanotube (HCNT) network, followed by construction of a double-cross-linked three-dimensional porous structure comprising polyvinyl alcohol (PVA) and PANI through repeated freeze–thaw cycles. Notably, contrary to the conventional understanding that area capacitance hardly scales linearly with electrode thickness, both single-electrode capacitance and device capacitance of assembled coin-type supercapacitors (SCs) show a nearly proportional relationship with electrode thickness from 0.2 to 1.05 mm, demonstrating full utilization of internal active materials. The electrode is ultra-flexible and can be bent by 180º. At 8 mA/cm2, the 1.05 mm thick buckypaper electrode achieves an energy density of 2.511 mWh/cm2, a power density of 4 mW/cm2, and a capacitance of 18.08 F/cm2. The assembled SC delivers an energy density of 0.7347 mWh/cm2 at a power density of 4.225 mW/cm2, with a capacitance of 3.52 F/cm2 and a retention of 66.7% after 5000 cycles at 8 mA/cm2. This electrode features a stable structure, excellent performance, and a simple preparation process, showing potential for flexible wearable energy storage devices.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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