S.R. Shingte , A.M. Patil , Sibylle Gemming , D.R.T. Zahn , T.D. Dongale , Seong Chan Jun , G. Salvan , P.B. Patil
{"title":"The power trio: CoS-CoFe2O4-rGO ternary composite to enhance energy density of all-solid-state asymmetric supercapacitors","authors":"S.R. Shingte , A.M. Patil , Sibylle Gemming , D.R.T. Zahn , T.D. Dongale , Seong Chan Jun , G. Salvan , P.B. Patil","doi":"10.1016/j.est.2024.114842","DOIUrl":"10.1016/j.est.2024.114842","url":null,"abstract":"<div><div>This study addresses a critical challenge in supercapacitors by boosting their energy density without compromising the power density. For this, cobalt sulfide‑cobalt ferrite-reduced graphene oxide (CS-CFO-rGO) nanocomposite was prepared using the hydrothermal method and employed as an electrode for supercapacitors. Detailed analysis of X-ray photoelectron spectroscopy and ab initio density functional theory confirmed the presence of cobalt ferrite nanocrystals with both normal and inverse occupation types, which is the most suitable phase of CFO for the supercapacitor applications. The CS-CFO-rGO composite synergistically combined the large specific surface area offered by the flower-like structure of CS, significant conductivity of rGO, and abundant electroactive sites of both the CFO and CS which led to improved overall supercapacitive performance. The ternary composite exhibited a superior specific capacitance of 1381 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. An asymmetric supercapacitor (ASC) device was fabricated which achieved 55.25 Wh kg<sup>−1</sup> energy density and 375 W Kg<sup>−1</sup> power density with notable stability. The practical applicability of the ASC device was demonstrated by powering LEDs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114842"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746475","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}
Zhen Wang , Gang Wu , Xiaoyuan Zeng, Can Wu, Yubo Xing, Jie Xiao, Yingjie Zhang, Peng Dong
{"title":"Achieving ultra-stable Li-CO2 battery via synergistic effect of RuxIr1-xO2 bimetallic oxide catalyst","authors":"Zhen Wang , Gang Wu , Xiaoyuan Zeng, Can Wu, Yubo Xing, Jie Xiao, Yingjie Zhang, Peng Dong","doi":"10.1016/j.est.2024.114717","DOIUrl":"10.1016/j.est.2024.114717","url":null,"abstract":"<div><div>Rechargeable Li-CO<sub>2</sub> batteries have attracted worldwide attention in recent years since it can realize the eco-friendly utilization of greenhouse gas CO<sub>2</sub> and offer high theoretical energy density. However, the current Li-CO<sub>2</sub> battery still has the shortcomings of a high charging platform and poor cycling performance. Herein, the mixed ultrafine Ru/Ir oxide nanoparticles are uniformly loaded on carbon nanotubes (Ru<sub>x</sub>Ir<sub>1-x</sub>O<sub>2</sub>/CNTs) as an efficient air cathode for Li-CO<sub>2</sub> battery by a simple one-step hydrothermal method. The Li-CO<sub>2</sub> battery with Ru<sub>x</sub>Ir<sub>1-x</sub>O<sub>2</sub>/CNTs cathode performed the discharge specific capacity of 3956.7 mAh g<sup>−1</sup>, ultralong cycling stability (>6000 h), low charge platform and over-potential (3.85 V/1.22 V). The excellent electrochemical performance is attributed to the synergistic effect of Ru<sub>x</sub>Ir<sub>1-x</sub>O<sub>2</sub> bimetallic oxide, enhancing the cycling stability and affecting the formation/ decomposition mechanism of the discharge product. This work provides an in-depth perspective on the catalyst effect and identifies a feasible way to construct an ultra-stable Li-CO<sub>2</sub> battery.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114717"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746325","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}
Yanbing Cheng , Xiping Zhang , Shaojie Qin , Jun Li , Lijun Zhang , Yiyong Zhang , Ning Du , Ziyi Zhu , Xue Li , Yingjie Zhang
{"title":"Renewable resources from nature: biomass-derived carbon for composite materials in electrochemical energy storage devices","authors":"Yanbing Cheng , Xiping Zhang , Shaojie Qin , Jun Li , Lijun Zhang , Yiyong Zhang , Ning Du , Ziyi Zhu , Xue Li , Yingjie Zhang","doi":"10.1016/j.est.2024.114692","DOIUrl":"10.1016/j.est.2024.114692","url":null,"abstract":"<div><div>Biomass-derived carbon possesses high stability, good conductivity, significant cost-effectiveness, and sustainability. It is frequently combined with non‑carbon-based materials to form composite materials, such as metals/alloys, metal oxides/sulfides/phosphides/selenides, showcasing outstanding electrochemical performance across diverse energy storage systems. However, significant variations exist in the properties of different non‑carbon-based materials, and further research is needed to elucidate their interaction with derived carbon. From the perspective of biomass-derived carbon, this review comprehensive analyzes the characteristic differences of precursors derived from natural renewable biomass sources, elucidates the evolution laws of microstructure, and evaluates the correlation between the synthesis techniques, action mechanisms, and electrochemical performance of composite materials in alkali metal-ion batteries, lithium‑sulfur batteries and supercapacitors. Finally, the key technological bottlenecks faced by composite materials are summarized, and the viable solutions are proposed.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114692"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747282","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}
Costas Elmasides, Ioannis E. Kosmadakis, Costas Athanasiou
{"title":"A comprehensive power management strategy for the effective sizing of a PV hybrid renewable energy system with battery and H2 storage","authors":"Costas Elmasides, Ioannis E. Kosmadakis, Costas Athanasiou","doi":"10.1016/j.est.2024.114790","DOIUrl":"10.1016/j.est.2024.114790","url":null,"abstract":"<div><div>In the present work a detailed Power Management Strategy (PMS) of a Photovoltaic Hybrid Renewable Energy System (PV-HRES) with battery, H<sub>2</sub> storage/re-electrification, and diesel generator (DG) back-up has been developed. The PV-HRES was regarded to employ commercial PV modules, battery cells, and power electronics, as well as commercial alkaline electrolyzer (EL) and PEM fuel cell (FC), both regarded to variably operate following the fluctuations of PV-power excesses/shortages. The scope was to demonstrate the operability of the PMS and to utilize the PMS for the rational sizing of the PV array, the batteries' bank and the hydrogen storage capacity, for a given load and a solar irradiation annual profile. The annual operation of the PV-HRES was simulated for 440 combinations of PV-arrays and battery/H<sub>2</sub> storage capacities, with constant EL and FC capacity, aiming for: (i) exclusively renewable power generation, (ii) rational PV-array sizing and (iii) annually balanced H<sub>2</sub> generation/consumption. The operation algorithm was based upon the battery's State of Energy (SOE) variation between 20 and 95 % of their nominal energy capacity (B<sub>NEC</sub>). Below 20 %, the PV-energy deficits were covered by the FC, in case of sufficient stored H<sub>2</sub>, whereas beyond 95 %, energy excesses were converted to H<sub>2</sub>, in case of H<sub>2</sub> storage volume availability. Increased PV-arrays and batteries led to the exhaustion of H<sub>2</sub> storage volume and to significant dumped renewable energy waste (up to 23 % of the PV generation), whereas decreased PVs and battery capacities led to H<sub>2</sub> exhaustion, throughout the annual operation. Out of the 440 examined combinations, 40 were found to simultaneously: i) nullify the DG generation, for exclusively renewable energy generation, ii) prevent both battery and H<sub>2</sub> storage volume exhaustion, thus eliminating excessive energy wastes and rationalizing the PV-array size, and iii) balancing the annual hydrogen generation/consumption. To fulfill the 1.48 kW average load demand, the analysis pointed out an optimum PV-HRES of 10.23 kWp nominal PV power, 120 kWh battery storage capacity, and 4 m<sup>3</sup> H<sub>2</sub> storage volume, at 100 bars maximum pressure; for which the annual PV generation exceeded by 25.8 % the annual load demand.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114790"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747363","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}
Shuaiqiao Peng , N.G.J. Helthuis , Johan E. ten Elshof , Gerrit Brem , Mohammad Mehrali
{"title":"Electrically driven nucleation for enhanced control of salt hydrate hydrogel heat release in long-term thermal storage applications","authors":"Shuaiqiao Peng , N.G.J. Helthuis , Johan E. ten Elshof , Gerrit Brem , Mohammad Mehrali","doi":"10.1016/j.est.2024.114816","DOIUrl":"10.1016/j.est.2024.114816","url":null,"abstract":"<div><div>Sodium acetate trihydrate (SAT) is a well-known salt hydrate phase change material (PCM) with large energy density and a high degree of supercooling, making it suitable for long-term thermal storage. However, effectively discharging heat from the supercooled SAT remains a challenge. This study delves into optimizing the electrical nucleation process in an SAT-based PCM, beginning with the validation of electrode pre-treatment and concluding with initiation under various conditions. The research identifies the optimal voltage and electrode spacing for nucleation. The crucial role of diffusion field interactions from growing crystals at different sites is highlighted, noting that their convergence creates a complex concentration gradient profile that hampers crystallization efficiency. Additionally, an increase in electrode pairs correlates with a more uniform heat distribution. Findings revealed that through material modification and nucleation strategy optimization, the theoretical crystallization time for SAT-based PCMs can vary significantly, ranging from 44 to 252 s. This variability, offering up to a 472.73 % extension in discharge time, underscores the PCM's adaptability for customized applications, especially in fields requiring variable discharge rates, such as residential heating and electronic thermal management.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114816"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"State of charge estimation method for lithium-ion batteries based on adaptive central difference particle filter with weight reconstruction","authors":"Xiang Yun, Xin Zhang, Chao Wang, Xingming Fan","doi":"10.1016/j.est.2024.114817","DOIUrl":"10.1016/j.est.2024.114817","url":null,"abstract":"<div><div>The particle filter (PF) has been widely used for state of charge (SOC) estimation. However, the particle degradation phenomenon will affect the estimation accuracy. In response to this issue, a state of charge estimation method for lithium-ion batteries based on adaptive central difference particle filter with weight reconstruction (ACDPF-WR) is designed in this paper. This method combines the preferred importance density function and the optimized resampling strategy. Firstly, the central difference Kalman filter (CDKF) is used to update the sampled particles to reduce the influence of particle degradation. Secondly, the Gaussian process regression (GPR) model of particles and weights is constructed by combining the offline learning experimental battery data set, and the GPR is used to generate the weight distribution of the particle filter. Then, an adaptive step size mechanism is introduced, which determines the optimal step size by calculating the mean square error of the weight distribution under different steps. Finally, the weight distribution generated by the central difference particle filter (CDPF) based on the optimal step size is combined with the typical resampling algorithm to select high-quality particles to achieve the optimal estimation. The adaptability and robustness of the algorithm are verified under Beijing Dynamic Stress Test (BJDST), US06 Highway Driving Schedule (US06), and Dynamic Stress Test (DST) conditions, and evaluated by mean absolute error (MAE) and root mean square error (RMSE) indicators. The average comparison results of the three working conditions show that the MAE of ACDPF-WR is 54.1 % higher than that of EPF and 24.3 % higher than that of CDPF, and the RMSE of ACDPF-WR is 64.6 % higher than that of EPF and 24.5 % higher than that of CDPF. The proposed algorithm achieves better performance and provides new insights and methods for the optimization and improvement of the battery management system.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114817"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746414","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}
Yaming Liu , Jiaxin Ding , Yingjie Cai , Biaolin Luo , Ligang Yao , Zhenya Wang
{"title":"A battery SOH estimation method based on entropy domain features and semi-supervised learning under limited sample conditions","authors":"Yaming Liu , Jiaxin Ding , Yingjie Cai , Biaolin Luo , Ligang Yao , Zhenya Wang","doi":"10.1016/j.est.2024.114822","DOIUrl":"10.1016/j.est.2024.114822","url":null,"abstract":"<div><div>Accurately estimating the battery's state of health (SOH) is critical for battery efficiency and stability. Despite significant progress in data-driven methods, the accuracy of these models is limited by feature extraction strategies and the scarcity of dataset samples. To address this issue, this study develops a battery SOH estimation model tailored to the limited sample conditions. A refined composite multiscale discrete sine entropy (RCMDSE) algorithm is proposed, which combines composite multiscale approaches, Shannon entropy theory, and the discrete sine transform. This algorithm is designed to extract high-quality battery entropy domain health features (HFs) from current and voltage signals at various scales and levels. Subsequently, we introduce semi-supervised learning concepts to enhance the estimation performance of the nu-support vector regression (NuSVR) algorithm in limited sample conditions. The golden jackal optimization algorithm (GJO) is used to improve the estimation accuracy of the NuSVR algorithm in a semi-supervised framework. Comparative and ablation experiments on four datasets validate that the battery SOH estimation model maintains RMSE and MAPE values of <1 %, even when trained with only 10 % of the data. Furthermore, the proposed RCMDSE algorithm outperforms and is more robust in HF extraction than the widely used incremental capacity (IC) curve feature extraction method.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114822"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746411","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}
{"title":"Enhanced cathodic electrodes from V2O5 nanorods: Pioneering organic dye degradation and optimized catalysis for sustainable supercapattery devices","authors":"Govindasamy Theertharaman, Kamalakkannan Vishva, Kolanjikombil Mathew Nibin, Subramanian Balakumar","doi":"10.1016/j.est.2024.114781","DOIUrl":"10.1016/j.est.2024.114781","url":null,"abstract":"<div><div>Encapsulating the essence of multifunctionality, the synthesized Vanadium Pentoxide (V<sub>2</sub>O<sub>5</sub>) nanorods (NRs) are adaptable innovators of visible-light photocatalytic degradation and sustainable supercapattery device fabrication. Meanwhile, the physicochemical properties are investigated by precise instruments. The V<sub>2</sub>O<sub>5</sub> NRs demonstrate improved photocatalytic performance over a 100-min duration, effectively catalyzing the methylene blue (MB) degradation with a remarkable degradation percentage of 98.37 % (25 mg catalysis) and shows a lower wavelength shift due to MB molecular braking. In a groundbreaking twist, this work utilises tainted V<sub>2</sub>O<sub>5</sub> NRs, ingeniously repurposing them to energy storage tenacities. In addition, the electrochemical assessment of tainted V<sub>2</sub>O<sub>5</sub> NRs demonstrated subtle changes after MB degradation, increasing the specific capacity (C<sub>s</sub>) value from 794 to 933C.g<sup>−1</sup> due to developing reduced particle agglomeration. Moreover, the better C<sub>s</sub> value of tainted V<sub>2</sub>O<sub>5</sub> NRs reached 95.02 % after 500 cycles (5 A.g<sup>−1</sup>). The fabricated asymmetric supercapattery (ASC) device demonstrates superior ion diffusion processes, as evidenced by Dunn's method calculations, particularly at a scan rate of 5 mV.s<sup>−1</sup>. Additionally, the assembled device underscored their unique positioning between battery and capacitor materials, distinctly supported by a “b” value of 0.8 and superior capacity retentivity. They reached a superior power (<em>P</em> = 191.75 W.kg<sup>−1</sup>) with energy (E = 50 Wh.kg<sup>−1</sup>) and better cyclic stability, maintaining their performance over 4000 cycles at 5 A. g<sup>−1</sup> (91.3 %). Furthermore, under exposure to the light of a yellow light emitting diode (LED) for 30 s, the real-time consequences of after cyclic stability material of tainted V<sub>2</sub>O<sub>5</sub> NRs are investigated, providing meaningful insights into their performance dynamics.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114781"},"PeriodicalIF":8.9,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746474","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}
Yuhan Ji , Tong Wang , Xu Yao , Jingkui Gao , Yanting Chu , Jingwen Sun , Haitao Dong , Jingquan Sha
{"title":"Regulating microstructure in agar-derived N-doped hard carbon towards enhanced sodium ion storage","authors":"Yuhan Ji , Tong Wang , Xu Yao , Jingkui Gao , Yanting Chu , Jingwen Sun , Haitao Dong , Jingquan Sha","doi":"10.1016/j.est.2024.114640","DOIUrl":"10.1016/j.est.2024.114640","url":null,"abstract":"<div><div>Hard carbon (HC) with larger interlayer spacing, lower operation potential and stable skeleton is a promising kind of anode materials for sodium-ion batteries (SIBs), where heteroatom doping and structural design have been proved to be effective strategies to improve its Na<sup>+</sup> storage performance. Herein, biomass agar-derived N-doped porous carbon (NPC-Ts, <em>T</em> = 750, 900 and 1050 °C) were successfully fabricated by modulating carbonization temperature, where interlayer spacing, specifical surface area (SSA), micro/mesopore amount and N-doping levels and configurations (pyridinic N (N-6), pyrrolic N (N-5) and graphite N (N-Q)) were explored in detail. Among the NPC-900 shows the largest interlayer spacing (0.412 nm), SSA (3991 m<sup>2</sup>/g) and sum percentage of N-6 and N-5 (76.7 %). When applied as anode material for SIBs, NPC-900 exhibits the highly reversible capacity (430.9 mAh/g at 100 mA/g after 100 cycles) and excellent rate capability (162 mAh/g at 5000 mA/g) and outstanding cycle life (242.6 mAh/g at 1000 mA/g after 5000 cycles). More importantly, when coupled with Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> (NVP) cathode, the Na<sup>+</sup> full cell displays the highest practical energy density of 267 Wh/kg to date, to the best our knowledge, revealing its potential practical sodium storage applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114640"},"PeriodicalIF":8.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747281","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}
Qirui Wang , Hongen Nian , Xiaoling Tan , Xiang Wang , Yong Deng , Xiaobin Gu , Ayoub Gounni , Yujing Zhao , Zhaoying Wang , Yongquan Zhou
{"title":"Ag nanomaterials enabled simultaneous thermal storage and heat transfer enhancement of CH3COONa·3H2O/vermiculite composite phase change material","authors":"Qirui Wang , Hongen Nian , Xiaoling Tan , Xiang Wang , Yong Deng , Xiaobin Gu , Ayoub Gounni , Yujing Zhao , Zhaoying Wang , Yongquan Zhou","doi":"10.1016/j.est.2024.114673","DOIUrl":"10.1016/j.est.2024.114673","url":null,"abstract":"<div><div>Filling thermally conductive materials (TCMs) is an effectivity way to enhance the thermal conduction of phase change materials (PCMs). However, it always has negative effects on heat storage behavior of PCMs. Balance of latent heat and thermal conduction capacity plays a vital role in practical application of thermal storage management. To study the effect of dimensional features of TCM on thermal characteristic of PCM, Ag nanomaterials (Ag NMs) which including 0-dimensional Ag nanoparticles (AgNP), 1-dimensional Ag nanowires (AgNW) and 2-dimensional Ag nanosheets (AgNS) acted as TCM, were used to modify the flaky expended vermiculate (EVM-Ag NMs), a series of CH<sub>3</sub>COONa·3H<sub>2</sub>O (SAT)/EVM-Ag NM composite PCMs (SAT/EVM-Ag NM CPCMs) were prepared. It was found that the Ag NMs contributed to the phase change behavior of hydrated salts. Wherein, the SAT/EVM-AgNW CPCM possessed high latent heat (∼200.9 J/g) and great thermal reliability (heat enthalpy loss was 6.9 % after 500 thermal cycles). Besides, Ag NMs also improved the thermal conductivity of the CPCMs. The Ag NWs formed interconnected thermal highways which was benefited to enhance thermal conductivity (0.8153 W·K<sup>−1</sup>·m<sup>−1</sup>). This work provides a new strategy for simultaneously improving the thermal conductivity and heat storage behavior of PCM, finds a new perspective to explore the mechanism of TCMs on phase change behavior and heat conduction of PCM.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114673"},"PeriodicalIF":8.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746407","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}