Journal of energy storage最新文献_第7页

Operational decisions of wind–photovoltaic–storage hybrid power systems using improved dung beetle optimizer 利用改进的蜣螂优化器制定风能-光伏-储能混合发电系统的运行决策

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116225

Yi Niu , Ming Meng , Xinxin Li , Tingting Pang

Developing wind–photovoltaic–storage hybrid power system (WPS-HPS) is crucial for many countries seeking to advance their energy transition. However, the intricacies of both internal production processes and external market conditions often leads to suboptimal operational decisions, resulting in missed profit opportunities and abandoned renewable energies. To address this problem, this study builds an operational decision model aimed at maximizing profits while minimizing the renewable energy curtailment rate. Different from most studies that only consider one single market, the model constructed in this study comprehensively involves day-ahead–auxiliary service (DAAS) joint market, and is more suitable for the actual situations. As this model is essentially a complex nondeterministic polynomial problem, it cannot be solved directly through conventional programming methods. Consequently, this study proposes a hybrid metaheuristic non-dominated sorting dung beetle optimizer (HMNSDBO) to solve the above operational decision problem. Based on Dung Beetle Optimizer (DBO), the proposed HMNSDBO algorithm combines 6 improvement strategies. This effectively alleviates the problem of low initial population quality, premature convergence, and the tendency to fall into local optimum. Compared with DBO and other 4 popular algorithms, the search capability, optimization accuracy, and convergence speed of HMNSDBO are improved by 7.88 %, 16.1 %, and 6.95 %, respectively. When participating in DAAS joint market, compared with participating solely in day-ahead market or auxiliary service market, the proposed HMNSDBO enable WPS-HPS to achieve a profit increase of 21.68 % or 107.40 %, respectively, and a renewable energy curtailment rate decrease by 4.11 % or 73.98 %, respectively.

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引用次数: 0

Analysis of low-temperature thermochemical heat transformer system based on hydrated salt: Dynamic modelling and performance evaluation

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116166

Chengchen Li , Qinghua Yu , Binbo Sun , Haowei Li , Yongliang Li

Low-grade and mismatch issues result in large amounts of renewable energy/waste heat not being utilized. Thermochemical heat transformer (THT) is a novel heat storage technology integrating energy storage and energy upgrade, which can address these issues. Hydrated salts, particularly SrBr₂·6H₂O, have emerged as compelling thermochemical storage media due to their low charging temperature requirements, which can be met by low-grade renewable energy/waste heat. This paper establishes a lumped parameter model of a low-temperature THT system based on SrBr₂·6H₂O which couples a thermochemical reactor and an evaporator/condenser. Based on the verified mathematical model, the dynamic characteristics of the system and its performance under different working conditions are studied, and special attention is paid to the effects of reactor heating water temperature, condensation cooling water temperature and reactor cooling water mass flow rate on the THT system. The results suggest that increasing the reaction driving force or reactor cooling water mass flow rate causes the energy storage efficiency to monotonically decrease or increase, while the exergy efficiency first increases and then decreases. As heating water temperature increases, the energy storage efficiency decreases from 0.654 to 0.573. Conversely, as condensation cooling water temperature decreases, the energy storage efficiency increases from 0.558 to 0.652, and the exergy efficiency reaches the peak value of 0.617 at a heating water temperature of 65 °C. Moreover, A lower heating water temperature can drive the THT system as the cooling water temperature decreases. Similarly, as the reactor cooling water mass flow rate increases, the energy storage efficiency increases from 0.376 to 0.573, and the exergy efficiency reaches the peak value of 0.653 with a mass flow rate of 0.006 kg/s. Compared with the thermochemical heat storage (TCES) system, the exergy efficiency of the THT system is 1.93 times as much. The results of this study provide a theoretical reference and technical guidance for THT technology in the field of utilizing low-grade renewable energy/waste heat.

低品位和不匹配问题导致大量可再生能源/废热无法利用。热化学热变压器（THT）是一种集储能和能源升级于一体的新型储热技术，可以解决这些问题。水合盐，尤其是 SrBr2-6H2O，因其对充注温度的要求较低而成为引人注目的热化学储热介质，而低品位的可再生能源/废热即可满足充注温度的要求。本文建立了一个基于 SrBr2-6H2O 的低温 THT 系统的集合参数模型，该模型将热化学反应器和蒸发器/冷凝器结合在一起。在验证数学模型的基础上，研究了该系统在不同工况下的动态特性及其性能，并特别关注了反应器加热水温度、冷凝冷却水温度和反应器冷却水质量流量对 THT 系统的影响。结果表明，增加反应驱动力或反应器冷却水质量流量会导致储能效率单调下降或增加，而放能效率先增加后下降。随着加热水温度的升高，储能效率从 0.654 降至 0.573。相反，随着冷凝冷却水温度的降低，储能效率从 0.558 上升到 0.652，当加热水温度为 65 °C 时，放能效率达到峰值 0.617。此外，随着冷却水温度的降低，较低的加热水温度也能驱动 THT 系统。同样，随着反应器冷却水质量流量的增加，储能效率从 0.376 增加到 0.573，当质量流量为 0.006 kg/s 时，放能效率达到峰值 0.653。与热化学蓄热（TCES）系统相比，THT 系统的放能效率是后者的 1.93 倍。该研究结果为 THT 技术在低品位可再生能源/余热利用领域提供了理论参考和技术指导。

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引用次数: 0

Engineering porosity and active sites in peach pit-derived carbon materials for high-performance sodium storage

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116215

Bingchuan Li , Junjun Zhou , Changle Xia , Lei Wang , Yaran Wu , Qing Han , Lingling Xie , Xuejing Qiu , Limin Zhu , Xiaoyu Cao

The abundant availability, unique microstructure, and low working potential of biomass carbon materials position them as promising candidates for anode materials in sodium-ion batteries (SIBs). Nevertheless, their practical application is hampered by a low initial coulombic efficiency (ICE) and the presence of impurities, which severely impair their electrochemical performance. Herein, we propose a facile synthesis method for preparing high-capacity biomass carbon materials, achieving a specific capacity of 220.2 mAh g⁻¹ alongside excellent ICE. The biomass carbon materials are derived from cost-effective biomass peach kernel shells through a hydrothermal pre‑carbonization process, followed by activation with NH₄HCO₃. This treatment effectively enhances porosity, modifies interlayer spacing, and increases the number of active sites in the microstructure. The results indicate that NH₄HCO₃ treatment effectively improves both the active sites and the interlayer spacing of the biomass carbon materials, thereby markedly augmenting their sodium storage capacity. Furthermore, we elucidated the sodium storage mechanism characterized by “adsorption-intercalation-filling” using in-situ X-ray diffraction (XRD) and ex-situ Raman spectroscopy. The interface of the solid electrolyte interphase (SEI) membrane was examined using ex-situ X-ray photoelectron spectroscopy (XPS), complemented by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses. These results underscore the potential of modified biomass carbon materials as high-performance anodes in SIBs, providing ideas for future research and development in this field.

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引用次数: 0

Low-frequency impedance spectroscopy generated by two equal square waves as a fast and simple tool for states estimation without battery relaxation 由两个相等方波产生的低频阻抗频谱，作为无需电池弛豫即可进行状态估计的快速而简单的工具

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116229

Yu-Sheng Huang, Kuo-Ching Chen, Chi-Jyun Ko

Electrochemical impedance spectroscopy (EIS) is an experimental technique that reveals battery impedances, notably with its low-frequency components exhibiting significant correlations with battery states. However, traditional EIS (T-EIS) necessitates expensive instrumentation and extended battery relaxation periods, rendering it impractical for rapid state estimation applications. To overcome these two shortcomings, square wave EIS (Sq-EIS) in the low-frequency range, generated using a simple two-cycle square wave, emerges as a more cost-effective and time-efficient alternative, capable of achieving results comparable to low-frequency T-EIS. Even when the battery is in unrelaxed states, the total root mean square error (RMSE) between Sq-EIS and T-EIS can be <0.5 mΩ. We conduct thorough investigations into the number, amplitude, and sampling rate of 50-s period square waves, showing that a two-cycle square wave with an amplitude of 1 A and a sampling rate above 50 Hz can achieve optimal similarity between Sq-EIS and T-EIS across different scenarios, including constant current charging/discharging and dynamic discharging. Square waves of different periods, such as 30 s and 10 s, also effectively achieve this similarity. Based on these findings, by applying two 10-s square waves (for a total of 20 s) immediately after battery charging or dynamic discharging, the Sq-EIS data enables machine learning models to concurrently estimate the battery's state of charge and state of health with an RMSE of <2 % in each case.

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引用次数: 0

Structural, electronic, and Li-ion adsorption properties of PolyPyGY explored by first-principles and machine learning simulations: A new multi-ringed 2D carbon allotrope

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116099

K.A.L. Lima , D.A. da Silva , G.D. Amvame Nze , F.L. Lopes de Mendonça , M.L. Pereira Jr , L.A. Ribeiro Jr

Two-dimensional (2D) carbon materials have been intensively investigated because of their distinctive structural framework and electronic behaviors as alternatives in energy conversion and storage applications. This study proposes a novel 2D carbon allotrope, Polymerized Pyracyclene Graphyne (PolyPyGY), characterized by a multi-ringed structure with 4-, 5-, 6-, 8-, and 16-membered rings comprising a porous structure. Using first-principles calculations and machine-learning techniques, we explore its structural, electronic, mechanical, optical, and lithium-ion storing properties. The vibrational properties assessed through the density functional perturbation theory framework confirm its structural stability. Moreover, ab initio molecular dynamics simulations at 1000 K demonstrate its thermal resilience, with no bond breaking or reconfiguration observed. The electronic band structure reveals a metallic nature, and the material exhibits anisotropic elastic properties, with Young’s modulus varying between 421 and 664 GPa, suggesting good mechanical stability. Furthermore, lithium diffusion studies indicate low energy barriers (0.05-0.9 eV), max lithium-ion storage capacity of 2231.41 mAh/g, and a high diffusion coefficient (

>

6 × 10⁻⁶ cm²/s), along with a stable open circuit voltage of 2.5 V. These results highlight PolyPyGY’s potential as a highly effective and durable anode material for lithium-ion batteries, featuring rapid Li-ion diffusion, stable intercalation, and consistent performance during charge and discharge cycles.

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引用次数: 0

Preparation and application of hydrophobic phase change microcapsules with siloxane/long-chain alkane polyurethane shell

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116223

Yuanjian Sun , Shaofeng Lu , Longfei Guo , Taidong Liu , Zhen Ren

In this paper, a preparation method for multifunctional microcapsules integrating hydrophobicity and phase change energy storage is introduced. A low-surface-energy hydrophobic shell with siloxane and long-chain alkane structures was constructed through the interfacial polymerization of hydroxyl-terminated polydimethylsiloxane (OH-PDMS) and glyceryl monostearate (GMS) with isophorone diisocyanate (IPDI). The effects of the shell structure on the surface morphology, chemical structure, thermal stability, phase change performance, and hydrophobic properties of the microencapsulated phase change materials (MEPCMs) were investigated. The results showed that the hydrophobic shell endowed the MEPCMs with excellent compactness, phase change performance, and cycling stability. After continuous treatment at 150 °C for 60 min, the mass loss rate was only 6.07 %, and the thermal storage capability reached as high as 93.78 %. Even after 1000 thermal cycles, the MEPCMs maintained excellent heat storage performance. The fabric treated with MEPCMs coating exhibited superior temperature regulation and hydrophobic properties, with a water contact angle (WCA) of 135.3°, as well as antifouling and self-cleaning capabilities. In addition, test results indicated that the treated fabric retained stable hydrophobic properties even after multiple washing, exposure to high and low temperatures, sunlight, and abrasion, demonstrating good durability and weather resistance.

{"title":"Preparation and application of hydrophobic phase change microcapsules with siloxane/long-chain alkane polyurethane shell","authors":"Yuanjian Sun , Shaofeng Lu , Longfei Guo , Taidong Liu , Zhen Ren","doi":"10.1016/j.est.2025.116223","DOIUrl":"10.1016/j.est.2025.116223","url":null,"abstract":"<div><div>In this paper, a preparation method for multifunctional microcapsules integrating hydrophobicity and phase change energy storage is introduced. A low-surface-energy hydrophobic shell with siloxane and long-chain alkane structures was constructed through the interfacial polymerization of hydroxyl-terminated polydimethylsiloxane (OH-PDMS) and glyceryl monostearate (GMS) with isophorone diisocyanate (IPDI). The effects of the shell structure on the surface morphology, chemical structure, thermal stability, phase change performance, and hydrophobic properties of the microencapsulated phase change materials (MEPCMs) were investigated. The results showed that the hydrophobic shell endowed the MEPCMs with excellent compactness, phase change performance, and cycling stability. After continuous treatment at 150 °C for 60 min, the mass loss rate was only 6.07 %, and the thermal storage capability reached as high as 93.78 %. Even after 1000 thermal cycles, the MEPCMs maintained excellent heat storage performance. The fabric treated with MEPCMs coating exhibited superior temperature regulation and hydrophobic properties, with a water contact angle (WCA) of 135.3°, as well as antifouling and self-cleaning capabilities. In addition, test results indicated that the treated fabric retained stable hydrophobic properties even after multiple washing, exposure to high and low temperatures, sunlight, and abrasion, demonstrating good durability and weather resistance.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"117 ","pages":"Article 116223"},"PeriodicalIF":8.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628845","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

Vibration-assisted active and passive collaborative cooling thermal management system: Performance study of thermoelectric cooling and phase change materials to enhance thermal stability of lithium-ion batteries

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116256

Yao Zhao , Zhaoying He , Wenyi Liu , Lei Chen , Hongquan Pu , Yuhong Jiang , Shiquan Li , Xiangyu Cai

A hybrid battery thermal management system (BTMS) combining passive phase change materials (PCM) and active thermoelectric cooling (TEC) is proposed to address the thermal management requirements of lithium-ion batteries under high ambient temperatures and dynamic operating conditions. A transient thermal-electrical-fluid multi-physics simulation model is developed, and the dynamic effects of vibration on the coupled heat transfer mechanism of PCM-TEC BTMS are investigated for the first time. The most critical findings indicate that: (1) after introducing TEC, compared to the pure PCM system, the maximum battery temperature is reduced by 6.97 K. Furthermore, as the TEC hot-end dissipation capability increases, the cooling effect of the BTMS improves. (2) Optimal cooling and latent heat recovery capacity are achieved when the TEC device is installed at the bottom side of the system and operates at a current of 1.5 A. (3) Mechanical vibration enhances natural convection heat transfer, and increasing vibration amplitude further improves BTMS heat transfer capability and enhances thermal uniformity. At a 60 mm amplitude, the maximum temperature rise and temperature differential drop by 42.32 % and 3.98 % at the conclusion of the battery discharge. (4) The effect of vibration frequency on the BTMS is not monotonic; the vibration frequency exceeds 30 Hz, the battery temperature exhibits a peak. At a vibration frequency of 70 Hz, the maximum temperature rise of the battery decreases by 39.08 %. This study provides theoretical direction for the optimization and implementation of PCM-TEC coupled BTMS.

{"title":"Vibration-assisted active and passive collaborative cooling thermal management system: Performance study of thermoelectric cooling and phase change materials to enhance thermal stability of lithium-ion batteries","authors":"Yao Zhao , Zhaoying He , Wenyi Liu , Lei Chen , Hongquan Pu , Yuhong Jiang , Shiquan Li , Xiangyu Cai","doi":"10.1016/j.est.2025.116256","DOIUrl":"10.1016/j.est.2025.116256","url":null,"abstract":"<div><div>A hybrid battery thermal management system (BTMS) combining passive phase change materials (PCM) and active thermoelectric cooling (TEC) is proposed to address the thermal management requirements of lithium-ion batteries under high ambient temperatures and dynamic operating conditions. A transient thermal-electrical-fluid multi-physics simulation model is developed, and the dynamic effects of vibration on the coupled heat transfer mechanism of PCM-TEC BTMS are investigated for the first time. The most critical findings indicate that: (1) after introducing TEC, compared to the pure PCM system, the maximum battery temperature is reduced by 6.97 K. Furthermore, as the TEC hot-end dissipation capability increases, the cooling effect of the BTMS improves. (2) Optimal cooling and latent heat recovery capacity are achieved when the TEC device is installed at the bottom side of the system and operates at a current of 1.5 A. (3) Mechanical vibration enhances natural convection heat transfer, and increasing vibration amplitude further improves BTMS heat transfer capability and enhances thermal uniformity. At a 60 mm amplitude, the maximum temperature rise and temperature differential drop by 42.32 % and 3.98 % at the conclusion of the battery discharge. (4) The effect of vibration frequency on the BTMS is not monotonic; the vibration frequency exceeds 30 Hz, the battery temperature exhibits a peak. At a vibration frequency of 70 Hz, the maximum temperature rise of the battery decreases by 39.08 %. This study provides theoretical direction for the optimization and implementation of PCM-TEC coupled BTMS.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"117 ","pages":"Article 116256"},"PeriodicalIF":8.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631719","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

Wood-derived carbon electrode modified with sulfuric acid-dispersed graphene oxide for high-performance supercapacitors

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116255

Luwen Fan , Jingru Sun , Huimin Shi , Hongyang Qu , Jie Yang , Chuanpeng Li , Jiajia Mu , Xiaoming Zhou , Lizhi Sheng

Nowadays, wood has gained popularity in the field of energy storage due to its availability, renewability and environmental friendliness. The original hierarchical porous structure of wood can be well preserved after carbonization, and carbonized wood (CW) exhibits excellent electrical conductivity and low curvature. This makes CW suitable for direct use as both an active material and a current collector in supercapacitors. However, the pore size of CW is relatively large, leading to inefficient use of pores space and limiting the number of active sites, thus reducing its specific capacity. To optimize the utilization of CW's channel space, we investigated the filling of its channels with reduced graphene oxide (RGO) and prepared the RGO@CW electrode. To prevent RGO stacking and aggregation within the CW channels, sulfuric acid was added to the graphene oxide (GO) impregnation solution, and investigated the effects of varying sulfuric acid concentrations on the electrochemical performance of the produced electrode. The prepared HRGO/CW-1 electrode demonstrated an area specific capacitance of up to 4680 mF cm⁻² at a current density of 5 mA cm⁻². The assembled symmetric supercapacitors (SSCs) exhibited excellent energy densities in both neutral and alkaline systems, reaching 12.12 Wh kg⁻¹ (0.85 mWh cm⁻²) and 3.35 Wh kg⁻¹ (0.23 mWh cm⁻²), respectively. Moreover, the SSCs maintained 97.6 % of their capacity after 20,000 cycles in a 1 M Na₂SO₄ electrolyte, indicating their excellent cycle stability. This study not only enhances the understanding of wood as an energy storage medium, but also provides valuable insights for sustainable energy storage solutions.

如今，木材因其可用性、可再生性和环保性在储能领域越来越受欢迎。木材原有的分层多孔结构在碳化后可以很好地保留下来，碳化木材（CW）具有优异的导电性和低曲率。这使得碳化木适合直接用作超级电容器中的活性材料和电流收集器。然而，CW 的孔径相对较大，导致孔隙空间利用效率低下，并限制了活性位点的数量，从而降低了其比容量。为了优化 CW 通道空间的利用，我们研究了用还原氧化石墨烯（RGO）填充其通道，并制备了 RGO@CW 电极。为了防止 RGO 在 CW 沟道内堆叠和聚集，我们在氧化石墨烯（GO）浸渍溶液中加入了硫酸，并研究了不同硫酸浓度对所制电极电化学性能的影响。制备的 HRGO/CW-1 电极在电流密度为 5 mA cm-2 时的面积比电容高达 4680 mF cm-2。组装好的对称超级电容器（SSC）在中性和碱性体系中都表现出优异的能量密度，分别达到 12.12 Wh kg-1 （0.85 mWh cm-2）和 3.35 Wh kg-1 （0.23 mWh cm-2）。此外，SSCs 在 1 M Na2SO4 电解液中循环 20,000 次后仍能保持 97.6% 的容量，这表明它们具有出色的循环稳定性。这项研究不仅加深了人们对木材作为储能介质的理解，还为可持续储能解决方案提供了宝贵的启示。

{"title":"Wood-derived carbon electrode modified with sulfuric acid-dispersed graphene oxide for high-performance supercapacitors","authors":"Luwen Fan , Jingru Sun , Huimin Shi , Hongyang Qu , Jie Yang , Chuanpeng Li , Jiajia Mu , Xiaoming Zhou , Lizhi Sheng","doi":"10.1016/j.est.2025.116255","DOIUrl":"10.1016/j.est.2025.116255","url":null,"abstract":"<div><div>Nowadays, wood has gained popularity in the field of energy storage due to its availability, renewability and environmental friendliness. The original hierarchical porous structure of wood can be well preserved after carbonization, and carbonized wood (CW) exhibits excellent electrical conductivity and low curvature. This makes CW suitable for direct use as both an active material and a current collector in supercapacitors. However, the pore size of CW is relatively large, leading to inefficient use of pores space and limiting the number of active sites, thus reducing its specific capacity. To optimize the utilization of CW's channel space, we investigated the filling of its channels with reduced graphene oxide (RGO) and prepared the RGO@CW electrode. To prevent RGO stacking and aggregation within the CW channels, sulfuric acid was added to the graphene oxide (GO) impregnation solution, and investigated the effects of varying sulfuric acid concentrations on the electrochemical performance of the produced electrode. The prepared HRGO/CW-1 electrode demonstrated an area specific capacitance of up to 4680 mF cm<sup>−2</sup> at a current density of 5 mA cm<sup>−2</sup>. The assembled symmetric supercapacitors (SSCs) exhibited excellent energy densities in both neutral and alkaline systems, reaching 12.12 Wh kg<sup>−1</sup> (0.85 mWh cm<sup>−2</sup>) and 3.35 Wh kg<sup>−1</sup> (0.23 mWh cm<sup>−2</sup>), respectively. Moreover, the SSCs maintained 97.6 % of their capacity after 20,000 cycles in a 1 M Na<sub>2</sub>SO<sub>4</sub> electrolyte, indicating their excellent cycle stability. This study not only enhances the understanding of wood as an energy storage medium, but also provides valuable insights for sustainable energy storage solutions.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"117 ","pages":"Article 116255"},"PeriodicalIF":8.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631716","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

Preparation and characteristic of high thermal conductivity, low-cost biomimetic layered carbonized bamboo-based composite phase change material 高热导率、低成本仿生层状碳化竹基复合相变材料的制备及其特性

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116220

Huanan Li, Riyi Lin, Liqiang Zhang, Jinyu Li, Chenxing Huang, Yiya Wang, Pengyu Chen, RuiQi Liu, Qiwei Dong, Zhizhuang Wang, Xinwei Wang

Shape-stable composite phase change materials (CPCMs) are essential for temperature regulation and mitigating the instability and fluctuations in renewable energy transmission. However, there is a pressing demand for low-cost, shape-stable CPCMs with high thermal conductivity and substantial latent heat. In this work, a simple novel method involving hot pressing, cutting, assembling and carbonization is developed to prepare new layered carbonized bamboo sheets (LCBSs) skeleton materials. Then, biomimetic layered carbonized bamboo-based composite phase change materials (LCB-CPCMs) are prepared by impregnating paraffin wax (PW) into the LCBSs. LCBSs with macroscopic, mesoscopic and microscopic pore structures, high specific surface area and high thermal conductivity are used as matrices for the first time. Compared to carbon nanotubes, graphene and other carbon materials, LCBSs are more cost-effective and support a high PW loading of 72.7 %. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) confirm that LCB-CPCMs exhibit outstanding thermal reliability, stability, and high latent heat. Moreover, the axial thermal conductivity of layer pristine bamboo sheets (LPBSs), LCBSs, and LCB-CPCMs is higher than the radial conductivity. Notably, the axial thermal conductivity of LCB-CPCM at 55 °C reaches 0.835 W·m⁻¹·K⁻¹, exceeding that of pure paraffin by 157 %. Infrared thermography thermal response tests further demonstrate the superior performance of LCB-CPCMs in thermal energy storage and regulation. This research presents a novel, high-quality matrix material suitable for developing shape-stable CPCMs with high latent heat and thermal conductivity. It has promising applications in the field of thermal energy storage and management.

{"title":"Preparation and characteristic of high thermal conductivity, low-cost biomimetic layered carbonized bamboo-based composite phase change material","authors":"Huanan Li, Riyi Lin, Liqiang Zhang, Jinyu Li, Chenxing Huang, Yiya Wang, Pengyu Chen, RuiQi Liu, Qiwei Dong, Zhizhuang Wang, Xinwei Wang","doi":"10.1016/j.est.2025.116220","DOIUrl":"10.1016/j.est.2025.116220","url":null,"abstract":"<div><div>Shape-stable composite phase change materials (CPCMs) are essential for temperature regulation and mitigating the instability and fluctuations in renewable energy transmission. However, there is a pressing demand for low-cost, shape-stable CPCMs with high thermal conductivity and substantial latent heat. In this work, a simple novel method involving hot pressing, cutting, assembling and carbonization is developed to prepare new layered carbonized bamboo sheets (LCBSs) skeleton materials. Then, biomimetic layered carbonized bamboo-based composite phase change materials (LCB-CPCMs) are prepared by impregnating paraffin wax (PW) into the LCBSs. LCBSs with macroscopic, mesoscopic and microscopic pore structures, high specific surface area and high thermal conductivity are used as matrices for the first time. Compared to carbon nanotubes, graphene and other carbon materials, LCBSs are more cost-effective and support a high PW loading of 72.7 %. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) confirm that LCB-CPCMs exhibit outstanding thermal reliability, stability, and high latent heat. Moreover, the axial thermal conductivity of layer pristine bamboo sheets (LPBSs), LCBSs, and LCB-CPCMs is higher than the radial conductivity. Notably, the axial thermal conductivity of LCB-CPCM at 55 °C reaches 0.835 W·m<sup>−1</sup>·K<sup>−1</sup>, exceeding that of pure paraffin by 157 %. Infrared thermography thermal response tests further demonstrate the superior performance of LCB-CPCMs in thermal energy storage and regulation. This research presents a novel, high-quality matrix material suitable for developing shape-stable CPCMs with high latent heat and thermal conductivity. It has promising applications in the field of thermal energy storage and management.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"117 ","pages":"Article 116220"},"PeriodicalIF":8.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628970","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

Numerical model for temperature identification in insulated boxes with phase change material cartridges 带相变材料盒的隔热箱温度识别数值模型

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2025-03-15 DOI: 10.1016/j.est.2025.116208

Piotr Duda , Tomasz Płusa , Jarosław Błądek , Łukasz Felkowski , Mariusz Konieczny , Jan Wrona , Kinga Wencel , Andrzej Osak , Artur Gawlik , Artur Guzowski , Janusz Pobędza , Paweł Walczak

This work aims to develop a numerical model that determines the transient temperature distribution in a food container that can be opened and closed during analysis. The box is insulated with polyurethane foam and equipped with two cartridges with a eutectic liquid (melting point ∼0 °C) along the top wall. The container with external dimensions (800 mm × 840 mm × 1310 mm) and a capacity of 370 l is analyzed as empty or loaded with two cups of water. The proposed numerical model is validated for this container (at the product initial temperature of 3 °C and ambient temperature of 20 °C). Two scenarios are assumed: a closed and an opened container. The results show good agreement with the values measured in a thermoclimatic chamber with the average relative error of 4.46 % and 6.87 % for the two scenarios. The presented model can be used to determine the temperature distribution of products stored in the container assuming different scenarios of its operation. The model can generate many results without having to carry out expensive experiments. The obtained results may be the basis for correcting food supply chains. They can also be used in future work to train an artificial neural network, the purpose of which may be to reduce the number of measuring sensors in insulated food containers.

{"title":"Numerical model for temperature identification in insulated boxes with phase change material cartridges","authors":"Piotr Duda , Tomasz Płusa , Jarosław Błądek , Łukasz Felkowski , Mariusz Konieczny , Jan Wrona , Kinga Wencel , Andrzej Osak , Artur Gawlik , Artur Guzowski , Janusz Pobędza , Paweł Walczak","doi":"10.1016/j.est.2025.116208","DOIUrl":"10.1016/j.est.2025.116208","url":null,"abstract":"<div><div>This work aims to develop a numerical model that determines the transient temperature distribution in a food container that can be opened and closed during analysis. The box is insulated with polyurethane foam and equipped with two cartridges with a eutectic liquid (melting point ∼0 °C) along the top wall. The container with external dimensions (800 mm × 840 mm × 1310 mm) and a capacity of 370 l is analyzed as empty or loaded with two cups of water. The proposed numerical model is validated for this container (at the product initial temperature of 3 °C and ambient temperature of 20 °C). Two scenarios are assumed: a closed and an opened container. The results show good agreement with the values measured in a thermoclimatic chamber with the average relative error of 4.46 % and 6.87 % for the two scenarios. The presented model can be used to determine the temperature distribution of products stored in the container assuming different scenarios of its operation. The model can generate many results without having to carry out expensive experiments. The obtained results may be the basis for correcting food supply chains. They can also be used in future work to train an artificial neural network, the purpose of which may be to reduce the number of measuring sensors in insulated food containers.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"117 ","pages":"Article 116208"},"PeriodicalIF":8.9,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629039","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