Journal of Power Sources最新文献

Solubility of PVDF in dioxolane-based Li-S electrolytes and improving cycling using a double cross-linked starch binder

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-19 DOI: 10.1016/j.jpowsour.2025.237092

Gbenga S. Taiwo , Mritunjay Mishra , Pradip Das , Alfred Worrad , Koffi P.C. Yao

{"title":"Solubility of PVDF in dioxolane-based Li-S electrolytes and improving cycling using a double cross-linked starch binder","authors":"Gbenga S. Taiwo , Mritunjay Mishra , Pradip Das , Alfred Worrad , Koffi P.C. Yao","doi":"10.1016/j.jpowsour.2025.237092","DOIUrl":"10.1016/j.jpowsour.2025.237092","url":null,"abstract":"<div><div>Lithium-Sulfur (Li-S) batteries are a coveted battery chemistry for low-cost lightweight cell production. Polyvinylidene fluoride (PVDF) is the most popular binder used for S-cathode fabrication in R&D. However, unbeknown to the broad research community, the dioxolane used in the similarly popular Li-S electrolyte formulation falls within the Hansen solubility sphere of PVDF, leading to slow dissolution of the PVDF-binder. The mechanically compromised S-cathode increases electronic impedance and leaches polysulfides at a faster rate during cycling, contributing to capacity fading. In this study, a double cross-linked starch binder (DCS) is developed to contrastively verify the hypothesis and attempt to address the issue. Compared to PVDF, DCS remains insoluble in the electrolyte, thus maintaining the structural integrity of the S-cathode and retaining 2.5 times lower impedance after 200 cycles. Its superior polysulfide retention was confirmed through operando Raman and ex situ UV–vis. DCS-bound cathodes maintain a discharge capacity of 522 mAh·g<sub>s</sub><sup>−1</sup> at 0.1C rate after 200 cycles and a capacity fade of 0.14 % per cycle after stabilization (beyond the initial 20 cycles). In contrast, the PVDF-bound electrode displays a discharge capacity of 434 mAh·g<sub>s</sub><sup>−1</sup> after 200 cycles, with a higher decay rate of 0.24 % per cycle.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237092"},"PeriodicalIF":8.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848513","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

Redox-active hybrid-solvent-in-salt electrolyte for high energy density supercapacitor

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-19 DOI: 10.1016/j.jpowsour.2025.237042

Kyungrim Jung , Jinwoo Park , Minjeong Won , Woong Kim

{"title":"Redox-active hybrid-solvent-in-salt electrolyte for high energy density supercapacitor","authors":"Kyungrim Jung , Jinwoo Park , Minjeong Won , Woong Kim","doi":"10.1016/j.jpowsour.2025.237042","DOIUrl":"10.1016/j.jpowsour.2025.237042","url":null,"abstract":"<div><div>A major limitation of supercapacitors (SCs) is their lower energy density compared to batteries, despite their high rate capability and long cycle life. One promising approach to overcoming this challenge is the use of high-concentration electrolytes, such as water-in-salt electrolyte (WiSE) and its redox-active (RA) derivatives, which leverage redox reactions to enhance energy density. However, these systems are constrained by the low solubility of RA species, limiting further performance improvements. To address this, we introduce a novel redox-active aqueous/organic hybrid-solvent-in-salt electrolyte (RA-HiSE), which significantly improves the solubility of RA species. As a result, SCs utilizing RA-HiSE achieve a remarkable three-fold increase in energy density (251.2 W h kg<sup>−1</sup> at 2.5 A g<sup>−1</sup>) compared to those with RA-WiSE, along with excellent capacity retention (95 % over 10,000 cycles at 5 A g<sup>−1</sup>). In addition to enhancing energy density, the RA-HiSE system offers superior temperature stability compared to RA-WiSE. This development represents a key breakthrough in the advancement of next-generation electrolytes for high-energy-density SCs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237042"},"PeriodicalIF":8.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848511","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

In situ formation of a dual-function interlayer for enhanced cycling stability in solid state lithium battery

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-19 DOI: 10.1016/j.jpowsour.2025.237101

Xing Xiang , Congkun Du , Xin Ji , Zhenzhen Zhao , Dongyang Liu , Haozhe Jin , Pengcheng Yan , Zhihan Li , Yanhua Zhang , Huihu Wang

{"title":"In situ formation of a dual-function interlayer for enhanced cycling stability in solid state lithium battery","authors":"Xing Xiang , Congkun Du , Xin Ji , Zhenzhen Zhao , Dongyang Liu , Haozhe Jin , Pengcheng Yan , Zhihan Li , Yanhua Zhang , Huihu Wang","doi":"10.1016/j.jpowsour.2025.237101","DOIUrl":"10.1016/j.jpowsour.2025.237101","url":null,"abstract":"<div><div>Garnet-type LLZO is a promising solid electrolyte for solid-state lithium batteries as its superior performance. However, the mismatch in lithium-ion migration at the Li/LLZO interface, and rapid electron migration within LLZO, facilitates the growth of lithium dendrites. Herein, an interlayer consisted of multiphase metal sulfides (ZnS, In<sub>2</sub>S<sub>3</sub> and Li<sub>2</sub>S) is synthesized by in-situ reaction between a ZnIn<sub>2</sub>S<sub>4</sub> (ZIS) modification layer on LLZO and lithium anode. ZnS promote lithium ion migration at the interface, and In<sub>2</sub>S<sub>3</sub> and Li<sub>2</sub>S prevent electron leakage from the anode, effectively inhibiting the formation of lithium dendrites. Benefiting from this dual-function interlayer design, the symmetrical lithium battery achieve a low interfacial impedance of 2.5 Ω cm<sup>2</sup>, a high critical current density of 1.6 mA cm<sup>−2</sup> at 25 °C and 3.4 mA cm<sup>−2</sup> at 60 °C, and excellent cycling stability over 3000 h at 0.3 mA cm<sup>−2</sup> (25 °C) and 1000 h at 1 mA cm<sup>−2</sup> (60 °C). Furthermore, the LiFePO<sub>4</sub>/ZIS-LLZTO/Li battery presents a high discharge capacity of 129.32 mAh·g<sup>−1</sup> at 1 C, with 80 % capacity retention after 600 cycles. This work lays a foundation for developing garnet-based solid-state batteries with enhanced long-term cycling performance.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237101"},"PeriodicalIF":8.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848514","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

Iron-assisted molten salt synthesis of highly graphitized hierarchical porous N-doped carbon for enhanced aqueous energy storage

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237086

Yao Tong , Chen Wu , Huaqiang He , Yuan Wang , Shaojun Yuan

{"title":"Iron-assisted molten salt synthesis of highly graphitized hierarchical porous N-doped carbon for enhanced aqueous energy storage","authors":"Yao Tong , Chen Wu , Huaqiang He , Yuan Wang , Shaojun Yuan","doi":"10.1016/j.jpowsour.2025.237086","DOIUrl":"10.1016/j.jpowsour.2025.237086","url":null,"abstract":"<div><div>The development of advanced carbon electrodes with high conductivity and a large specific surface area is crucial for electrochemical energy storage applications. In this work, we propose an iron-assisted molten salt (NaCl) strategy to fabricate highly graphitized hierarchical porous N-doped carbon (GHPNC) as an efficient electrode for high-performance supercapacitors. Ferric chloride (FeCl<sub>3</sub>) is employed as an activator to promote the formation of a micro-mesoporous structure, while NaCl and the resulting iron oxide facilitate the development of macropores. The optimized GHPNC-5.0-1.0 sample (where 5.0 represents the FeCl<sub>3</sub>-to-carbon precursor mass ratio and 1.0 denotes the NaCl-to-carbon precursor mass ratio) exhibits a well-developed hierarchical porous structure and high graphitization, leading to excellent electrochemical performance. In a 6 M KOH electrolyte, the GHPNC-5.0-1.0 electrode achieves a capacitance of 201.5 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. A symmetric supercapacitor (SSC) assembled with this electrode delivers an energy density of 9.84 Wh kg<sup>−1</sup> at a power density of 250.17 W kg<sup>−1</sup>. In a 2 M ZnSO<sub>4</sub> electrolyte, the GHPNC-5.0-1.0//Zn hybrid supercapacitor (ZHSC) demonstrates an energy density of 79.87 Wh kg<sup>−1</sup> at 625 W kg<sup>−1</sup>. Notably, the ZHSC exhibits outstanding cycling stability, retaining nearly 100 % of its capacitance after 10,000 cycles.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237086"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842742","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

Template-free water splitting preparation of carbon nanotube foam for high-efficiency charge storage and electromagnetic interference shielding

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237096

Haihan Zhou , Zhirong Ren , Ting Ou , Hua-Jin Zhai

{"title":"Template-free water splitting preparation of carbon nanotube foam for high-efficiency charge storage and electromagnetic interference shielding","authors":"Haihan Zhou , Zhirong Ren , Ting Ou , Hua-Jin Zhai","doi":"10.1016/j.jpowsour.2025.237096","DOIUrl":"10.1016/j.jpowsour.2025.237096","url":null,"abstract":"<div><div>With the wide applications of wearable and portable devices, there is a rising requirement to construct multi-functional materials featuring both high-efficiency charge storage and electromagnetic interference (EMI) shielding effectiveness (SE). Here, a facile template-free water splitting process is put forward by treating carbon nanotube paper (CNTP) to obtain carbon nanotube foam (CNTF). The resulting CNTF serving as electrode yields the specific capacitance as high as 513.8 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and outstanding EMI SE of 74.7 dB, while those of CNTP are 21.4 F g<sup>−1</sup> and 46.1 dB, respectively. When used as the current collector, CNTF demonstrates significant benefits for the efficient utilization of polyaniline (PANi) by the elimination of the distinct interface between the current collector and the active material. Additionally, PANi exhibits increased roughness and a higher degree of doping when combined with CNTF. The CNTF/PANi electrode, with a PANi loading of 3.63 mg cm<sup>−2</sup>, achieves the areal-specific capacitance of 2035.6 mF cm<sup>−2</sup>, over twofold higher than that for the CNTP/PANi electrode. A flexible electrochemical capacitor assembled by CNTF/PANi electrodes exhibits 85.6 % of capacitance retention ratio after bending for 1000 times, while a device based on CNTP/PANi electrodes only retains 31.3 %.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237096"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842743","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

A skin-core hybrid nanocellulose separator for high-energy and high-safety lithium metal batteries

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237062

Jiamin Zhang, Shufen Zou, Zhiwei Ma, Bing Na, Shan Lin, Rong Zeng

引用次数: 0

Thermal stability evaluation and optimal design of polymer film capacitors for power pulse systems

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237061

Li-Lin Lu , Jian Wang , Ying Lan , Run-Lin Liu , Jian-Yong Jiang , Zhong-Hui Shen

{"title":"Thermal stability evaluation and optimal design of polymer film capacitors for power pulse systems","authors":"Li-Lin Lu , Jian Wang , Ying Lan , Run-Lin Liu , Jian-Yong Jiang , Zhong-Hui Shen","doi":"10.1016/j.jpowsour.2025.237061","DOIUrl":"10.1016/j.jpowsour.2025.237061","url":null,"abstract":"<div><div>Polymer film capacitors are highly favored in pulse power systems due to their high-power densities and excellent fatigue resistance. However, thermal runaway under extreme operation conditions can severely affect the stability of dielectric capacitors, which is less well understood and managed. Here, we establish a pulse circuit model to analyze the energy dissipation of the metallized film capacitor during charging and discharging. It is found that the thermal effects of the capacitor are affected by four aspects of material property, device structure, load resistance, and operating condition. Heat generation in the pulse power capacitor is the result of the combined effects of voltage and current, with the Joule heat loss in the electrodes being the primary source. A mapping diagram is established to illustrate the relationship between peak current density, frequency, and maximum temperature. Additionally, the “Dangers Area” under extreme pulse conditions is identified and optimized. This work not only offers a general approach for studying the thermal effects in metallized film polymer capacitors, but also provides theoretical insights for the thermal management and design of pulse power capacitors in practical applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"643 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842620","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

Effects of aluminum source on nonaqueous precipitation synthesis of β''-Al2O3 and its mechanism research

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237068

Xiaolong Huang , Guo Feng , Jun Mu , Yan Li , Fukun Wu , Zhiqi Guo , Qian Wu , Yanqiao Xu , Zhongjie Wang , Feng Jiang

{"title":"Effects of aluminum source on nonaqueous precipitation synthesis of β''-Al2O3 and its mechanism research","authors":"Xiaolong Huang , Guo Feng , Jun Mu , Yan Li , Fukun Wu , Zhiqi Guo , Qian Wu , Yanqiao Xu , Zhongjie Wang , Feng Jiang","doi":"10.1016/j.jpowsour.2025.237068","DOIUrl":"10.1016/j.jpowsour.2025.237068","url":null,"abstract":"<div><div><em>β''</em>-Al<sub>2</sub>O<sub>3</sub> solid electrolyte (Beta<em>''</em> Alumina Solid Electrolyte, BASE) ionic migration channels forming main methods typically rely on poreforming agents, freeze casting, and intermediate-stage sintering. However, it is difficult to form uniformly distributed ionic migration channels. This work designs a novel facile nonaqueous precipitation method to promote the formation of uniform ionic migration channels in BASE. In situ formed aluminum isopropoxide acts as polymerization self catalytic promoter to promote the de-etherification heterogeneous polymerization reaction between aluminum isopropoxide and sodium ethoxide, with the formation of a polymer product with Na-O-Al as the skeleton and uniform elemental distribution. The uniform distributed in-situ carbon at 1150 °C with a mass fraction of about 4.11 % promotes the formation of uniformly distributed Na-ions migration channels with a diameter of 0.005–1 μm when sintered at 1600 °C. These migration channels ensure migration rate of Na-ions with the ionic conductivity of BASE of 0.029 S/cm at 300 °C.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237068"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842740","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

Critical outlook on separator layers for solid-state lithium batteries: Solid electrolyte materials, anode interface engineering, & scalable separator production

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237014

Diana Chaykina, Meena Ghosh, Ömer Ulaş Kudu

{"title":"Critical outlook on separator layers for solid-state lithium batteries: Solid electrolyte materials, anode interface engineering, & scalable separator production","authors":"Diana Chaykina, Meena Ghosh, Ömer Ulaş Kudu","doi":"10.1016/j.jpowsour.2025.237014","DOIUrl":"10.1016/j.jpowsour.2025.237014","url":null,"abstract":"<div><div>Energy storage as batteries is important for the electrification of several different technologies including transportation. For such applications, it is also clear that the state-of-the-art lithium-ion batteries need to be improved, especially in terms of energy density, safety, and other aspects. Solid-state batteries stand out as promising candidates to fill this gap, utilizing a solid-state electrolyte separator instead of flammable liquid electrolytes soaked in polymeric membranes. This review provides a comprehensive overview of several types of solid-state electrolytes (oxides, sulphides, halides, polymer, composite), with a special focus on sulphide argyrodite solid electrolytes as promising separators which offer the best balance of performance and processability. Furthermore, we discuss the stability issues of argyrodites with next generation anodes such as Li and Si, suggesting that interface engineering strategies by thin film methods are a scalable and effective way to mitigate the stability issues at the interface. Additionally, we give an overview of the process to make solid-state electrolyte membranes which involves several steps. Although many tools and approaches are available for the fabrication of these membranes, dry processing technology is identified as an important component to the successful realization of solid-state batteries.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"643 ","pages":"Article 237014"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844213","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

Additive-assisted complex-formation-regulated decalcification of calcium disilicide for enhanced exfoliation and stable bare silicon nanosheet anodes in lithium-ion batteries

IF 8.1 2区工程技术

Journal of Power Sources Pub Date : 2025-04-18 DOI: 10.1016/j.jpowsour.2025.237076

Victor Lau Jr., Chung-wen Lan

{"title":"Additive-assisted complex-formation-regulated decalcification of calcium disilicide for enhanced exfoliation and stable bare silicon nanosheet anodes in lithium-ion batteries","authors":"Victor Lau Jr., Chung-wen Lan","doi":"10.1016/j.jpowsour.2025.237076","DOIUrl":"10.1016/j.jpowsour.2025.237076","url":null,"abstract":"<div><div>Thin, exfoliated silicon nanosheets represent a promising approach to enhance the structural and electrochemical stability of silicon anodes in lithium-ion batteries (LIBs). Reducing nanosheet thicknesses below critical fracture thresholds minimizes cycling-induced fractures, improving material stability and cycling performance. Our preliminary work shows that deliquescent moisture in the molten salt decalcification of calcium disilicide (CaSi<sub>2</sub>) is crucial for effective exfoliation but also promotes unwanted silicon oxidation, prompting the search for alternatives. We report a thermodynamically optimized reaction route, regulated by complex formation, to enhance the molten salt decalcification and exfoliation of silicon nanosheets derived from the Zintl phase calcium disilicide. Structural analysis reveals increased specific surface area and robust interlayer separation, while electrochemical tests demonstrate significant gains in cycling performance, with a 51 % increase in reversible capacity retention and improved kinetics. This work highlights enhanced exfoliation and an optimized reaction technique as promising solutions to the limitations of bare silicon anodes, offering a scalable, high-performance pathway for lithium-ion battery technology.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"644 ","pages":"Article 237076"},"PeriodicalIF":8.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842745","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