Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235803
Jiajia Wang , Jiaxin Fan , Meiyu Fan , Xiyan Yue , Juan Zhang , Zhao Liu , Zhengkun Xie , Qiang Zhao , Abuliti Abudula , Guoqing Guan
Metal sulfides has attracted numerous attentions as the anode material for sodium ion batteries (SIBs) because of their excellent theoretical capacities. However, these materials still suffer from poor electrochemical performance caused by the volume expansion and sluggish electrochemical kinetics. In this work, the NiS/ZnS embedded in carbon material with heterogeneous interface is fabricated through a sulphurization process using metal organic framework (MOF) as precursor followed by acid treatment (NiS/ZnS@C-AT). It is found that the generated abundant heterogeneous interface in the present materials effectively promotes the electronic conductivity and Na+ diffusion, which enhances the electrochemical kinetics, causing good rate performance. Moreover, the carbon material produced by the sulphurization process with high temperature can increase the structural stability of the NiS/ZnS material during charging/discharging process, resulting in long cycling stability. As a result, the NiS/ZnS@C-AT based anode for SIBs exhibits an excellent reversible capacity of 456.8 mA h g−1@ 0. 1 A g−1, good cycling stability with 404.5 mA h g−1@2 A g−1 after 1900 cycles, and superior rate performance with 381.3 mA h g−1@5 A g−1.
金属硫化物因其出色的理论容量而成为钠离子电池（SIB）的负极材料，受到了广泛关注。然而，由于体积膨胀和电化学动力学缓慢，这些材料的电化学性能仍然较差。本研究以金属有机框架（MOF）为前驱体，通过硫化工艺和酸处理（NiS/ZnS@C-AT）制备了具有异质界面的嵌在碳材料中的 NiS/ZnS。研究发现，本材料中生成的丰富异质界面有效促进了电子导电性和 Na+ 扩散，从而增强了电化学动力学，使其具有良好的速率性能。此外，高温硫化过程中产生的碳材料可以提高 NiS/ZnS 材料在充放电过程中的结构稳定性，从而实现长循环稳定性。因此，基于 NiS/ZnS@C-AT 的 SIB 负极具有出色的可逆容量（456.8 mA h g-1@0. 1 A g-1）、良好的循环稳定性（1900 次循环后 404.5 mA h g-1@2 A g-1）和卓越的速率性能（381.3 mA h g-1@5 A g-1）。
{"title":"MOF derived NiS/ZnS heterostructure enhancing the electrochemical kinetics for sodium ion batteries","authors":"Jiajia Wang , Jiaxin Fan , Meiyu Fan , Xiyan Yue , Juan Zhang , Zhao Liu , Zhengkun Xie , Qiang Zhao , Abuliti Abudula , Guoqing Guan","doi":"10.1016/j.jpowsour.2024.235803","DOIUrl":"10.1016/j.jpowsour.2024.235803","url":null,"abstract":"<div><div>Metal sulfides has attracted numerous attentions as the anode material for sodium ion batteries (SIBs) because of their excellent theoretical capacities. However, these materials still suffer from poor electrochemical performance caused by the volume expansion and sluggish electrochemical kinetics. In this work, the NiS/ZnS embedded in carbon material with heterogeneous interface is fabricated through a sulphurization process using metal organic framework (MOF) as precursor followed by acid treatment (NiS/ZnS@C-AT). It is found that the generated abundant heterogeneous interface in the present materials effectively promotes the electronic conductivity and Na<sup>+</sup> diffusion, which enhances the electrochemical kinetics, causing good rate performance. Moreover, the carbon material produced by the sulphurization process with high temperature can increase the structural stability of the NiS/ZnS material during charging/discharging process, resulting in long cycling stability. As a result, the NiS/ZnS@C-AT based anode for SIBs exhibits an excellent reversible capacity of 456.8 mA h g<sup>−1</sup>@ 0. 1 A g<sup>−1</sup>, good cycling stability with 404.5 mA h g<sup>−1</sup>@2 A g<sup>−1</sup> after 1900 cycles, and superior rate performance with 381.3 mA h g<sup>−1</sup>@5 A g<sup>−1</sup>.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235803"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656491","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235782
Zhicheng Song, Qiang Zhou, Jin Zeng, Wan Zhang, Shuxin Zhuang, Hao Luo, Mi Lu, Xiaodan Li
To address the issues of slow capacity activation and poor stability faced by organic polymer electrodes, this study, proposed a synergistic lithium storage effect derived from modified polydopamine sphere by mixed-phase TiO2 shell of anatase TiO2, rutile TiO2, and TiO2(B), synthesizing polydopamine@mixed-phase TiO2 (PDA@mp-TiO2) core-shell nanospheres. The in-situ growth of mixed-phase TiO2 grains induces the partial oxidation of hydroxyl groups in polydopamine to quinone groups, making the C=O groups and benzene rings more active for lithium storage and thus improving the reversible capacity. The coordination between mixed-phase TiO2 and polydopamine reduces the spatial hindrance effect among polydopamine long chains, endowing extra stable channels for rapid adsorption and diffusion of lithium ion. Moreover, the mixed-phase TiO2 shell intercepts side reactions between organic groups of the electrolyte and polydopamine without affecting electron-ion transport, promotes the formation of a fluorine-rich inorganic SEI layer, improving the long-term cycling stability of the PDA@mp-TiO2 electrode. In the liquid lithium-ion batteries, the PDA@mp-TiO2 electrode exhibits an unprecedented reversible capacity at low current densities. Furthermore, the PDA@mp-TiO2 demonstrates an ultra high-rate long cyclic life. As the anode for solid-state lithium-ion batteries, PDA@mp-TiO2 also achieves up to 90 % capacity retention under high current densities.
{"title":"Lithium-philic organic polymer@mixed-phase TiO2 core-shell nanospheres for high-rate and long-cyclic performance in liquid/solid-state lithium-ion batteries","authors":"Zhicheng Song, Qiang Zhou, Jin Zeng, Wan Zhang, Shuxin Zhuang, Hao Luo, Mi Lu, Xiaodan Li","doi":"10.1016/j.jpowsour.2024.235782","DOIUrl":"10.1016/j.jpowsour.2024.235782","url":null,"abstract":"<div><div>To address the issues of slow capacity activation and poor stability faced by organic polymer electrodes, this study, proposed a synergistic lithium storage effect derived from modified polydopamine sphere by mixed-phase TiO<sub>2</sub> shell of anatase TiO<sub>2</sub>, rutile TiO<sub>2</sub>, and TiO<sub>2</sub>(B), synthesizing polydopamine@mixed-phase TiO<sub>2</sub> (PDA@mp-TiO<sub>2</sub>) core-shell nanospheres. The in-situ growth of mixed-phase TiO<sub>2</sub> grains induces the partial oxidation of hydroxyl groups in polydopamine to quinone groups, making the C=O groups and benzene rings more active for lithium storage and thus improving the reversible capacity. The coordination between mixed-phase TiO<sub>2</sub> and polydopamine reduces the spatial hindrance effect among polydopamine long chains, endowing extra stable channels for rapid adsorption and diffusion of lithium ion. Moreover, the mixed-phase TiO<sub>2</sub> shell intercepts side reactions between organic groups of the electrolyte and polydopamine without affecting electron-ion transport, promotes the formation of a fluorine-rich inorganic SEI layer, improving the long-term cycling stability of the PDA@mp-TiO<sub>2</sub> electrode. In the liquid lithium-ion batteries, the PDA@mp-TiO<sub>2</sub> electrode exhibits an unprecedented reversible capacity at low current densities. Furthermore, the PDA@mp-TiO<sub>2</sub> demonstrates an ultra high-rate long cyclic life. As the anode for solid-state lithium-ion batteries, PDA@mp-TiO<sub>2</sub> also achieves up to 90 % capacity retention under high current densities.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235782"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656489","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235776
Yuan Gao , Caiting Gu , Zhongdong Tian , Silong Tian , Shilu zhang , Fengwei Shi , Jun Mei
Flexible zinc-ion batteries (ZIBs) assembled with hydrogel electrolyte are considered as promising flexible energy storage devices because of their inherent safety and versatility. However, the ionic conductivity and mechanical properties of most hydrogel electrolytes are not satisfactory, Furthermore, they will freeze at subzero temperature due to existing water. In this work, a freezing resistant polycarboxylic double network gel electrolyte (SIP-CS) with high ionic conductivity (14.36 mS cm⁻1 at −20 °C) and excellent mechanical property (fracture stress of 241.5 kPa and fracture strain of 1011 %) is prepared. Iminodiacetic acid (IDA) is applied to modify the alginate mainchains with many -COOH groups, which could provide channels for ion migration and endow hydrogel with high ionic conductivity. Additionally, sorbitol, containing lots of hydroxyl groups, is applied as a cryoprotectant to enhance the subzero performance of the electrolyte, because sorbitol could break the hydrogen bonds between water molecules, inhibit the formation of ice crystals, and reduce the freezing point of the gel electrolyte. The freezing point of SIP-CS is −37.0 °C, enabling the electrolyte to perform well at low temperatures. The flexible quasi solid Zn-MnO2 battery is assembled to evaluate the low-temperature electrochemical performance of SIP-CS. The assembled Zn-MnO2 battery shows good cycling and stable electrochemical performance, which proves the excellent antifreezing property of SIP-CS. This work provides a new strategy for preparing an electrolyte with good withstand low-temperature capability.
{"title":"Antifreezing functionalized-alginate-based electrolytes for zinc-ion batteries","authors":"Yuan Gao , Caiting Gu , Zhongdong Tian , Silong Tian , Shilu zhang , Fengwei Shi , Jun Mei","doi":"10.1016/j.jpowsour.2024.235776","DOIUrl":"10.1016/j.jpowsour.2024.235776","url":null,"abstract":"<div><div>Flexible zinc-ion batteries (ZIBs) assembled with hydrogel electrolyte are considered as promising flexible energy storage devices because of their inherent safety and versatility. However, the ionic conductivity and mechanical properties of most hydrogel electrolytes are not satisfactory, Furthermore, they will freeze at subzero temperature due to existing water. In this work, a freezing resistant polycarboxylic double network gel electrolyte (SIP-CS) with high ionic conductivity (14.36 mS cm⁻<sup>1</sup> at −20 °C) and excellent mechanical property (fracture stress of 241.5 kPa and fracture strain of 1011 %) is prepared. Iminodiacetic acid (IDA) is applied to modify the alginate mainchains with many -COOH groups, which could provide channels for ion migration and endow hydrogel with high ionic conductivity. Additionally, sorbitol, containing lots of hydroxyl groups, is applied as a cryoprotectant to enhance the subzero performance of the electrolyte, because sorbitol could break the hydrogen bonds between water molecules, inhibit the formation of ice crystals, and reduce the freezing point of the gel electrolyte. The freezing point of SIP-CS is −37.0 °C, enabling the electrolyte to perform well at low temperatures. The flexible quasi solid Zn-MnO<sub>2</sub> battery is assembled to evaluate the low-temperature electrochemical performance of SIP-CS. The assembled Zn-MnO<sub>2</sub> battery shows good cycling and stable electrochemical performance, which proves the excellent antifreezing property of SIP-CS. This work provides a new strategy for preparing an electrolyte with good withstand low-temperature capability.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235776"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656581","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235794
Xinhua He , Jirong Wang , Xiaoqiu Zhong , Fangqing Zhang , Zhu-Bao Shao , Yu-Zhong Wang
Poor electrolyte wettability, nasty heat shrinkage and severe dendrite-growth issues of commonly used polyolefin separators significantly hamper further application and improvement of energy-density for lithium-ion batteries (LIBs). Hence, designing and constructing advanced separator materials with good wettability, robust mechanical strength and satisfied fire-thermal safety is critical for next-generation LIBs. In this study, novel separators consisted of bacterial cellulose (BC) and the prelithiated halloysite nanotubes (Li-HNTs), denoted Li-HNTs@BC separator, are designed and prepared via vacuum-assisted strategy. Compared with conventional Celgard separator, the obtained Li-HNTs@BC separators deliver good thermal stability, high porosity (62.99 %) and electrolyte uptake (497 %), and excellent thermal dimensional stability (almost no shrinkage at 300 °C for 30 min). In addition, Li-HNTs could provide extra lithium ions source and expedite lithium ion's migration, thus decreasing the concentration polarization and uneven lithium deposition during the battery cycling. As a result, the assembled Li//LiFePO4 cell using Li-HNTs@BC separator displays obviously improved charging-discharging reversibility and excellent rate capability. More importantly, the separator endows the battery with excellent thermal safety, which could also well-process at 150 °C.
{"title":"Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries","authors":"Xinhua He , Jirong Wang , Xiaoqiu Zhong , Fangqing Zhang , Zhu-Bao Shao , Yu-Zhong Wang","doi":"10.1016/j.jpowsour.2024.235794","DOIUrl":"10.1016/j.jpowsour.2024.235794","url":null,"abstract":"<div><div>Poor electrolyte wettability, nasty heat shrinkage and severe dendrite-growth issues of commonly used polyolefin separators significantly hamper further application and improvement of energy-density for lithium-ion batteries (LIBs). Hence, designing and constructing advanced separator materials with good wettability, robust mechanical strength and satisfied fire-thermal safety is critical for next-generation LIBs. In this study, novel separators consisted of bacterial cellulose (BC) and the prelithiated halloysite nanotubes (Li-HNTs), denoted Li-HNTs@BC separator, are designed and prepared via vacuum-assisted strategy. Compared with conventional Celgard separator, the obtained Li-HNTs@BC separators deliver good thermal stability, high porosity (62.99 %) and electrolyte uptake (497 %), and excellent thermal dimensional stability (almost no shrinkage at 300 °C for 30 min). In addition, Li-HNTs could provide extra lithium ions source and expedite lithium ion's migration, thus decreasing the concentration polarization and uneven lithium deposition during the battery cycling. As a result, the assembled Li//LiFePO<sub>4</sub> cell using Li-HNTs@BC separator displays obviously improved charging-discharging reversibility and excellent rate capability. More importantly, the separator endows the battery with excellent thermal safety, which could also well-process at 150 °C.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235794"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656585","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235721
Tianshuang Qi, Kai Xiong, Xiong Zhang
Sodium-ion batteries (SIBs) have attracted the attention of sustainable energy due to their low cost and availability of sodium. A variety of carbon anode materials such as graphite, hard carbon, soft carbon, and graphene are widely used in sib because of their diversity of structure and chemical properties. These materials store sodium ions differently, and graphite needs to be modified for better performance. Hard and soft carbon provide high capacity but have problems with electrical conductivity and expansion. Carbon nanostructures, including graphene, have many active sites but are expensive to produce. To improve the properties of carbon materials, strategies such as increasing layer spacing, controlling porosity, and introducing defects are discussed. Understanding the structure of the substance and the mechanism of sodium storage is crucial. The future of sib carbon anodes includes the pursuit of green, low-cost materials, and synthesis methods, as well as the use of advanced technologies for material optimization.
{"title":"Research progress of carbon materials in the anodes of sodium-ion batteries","authors":"Tianshuang Qi, Kai Xiong, Xiong Zhang","doi":"10.1016/j.jpowsour.2024.235721","DOIUrl":"10.1016/j.jpowsour.2024.235721","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) have attracted the attention of sustainable energy due to their low cost and availability of sodium. A variety of carbon anode materials such as graphite, hard carbon, soft carbon, and graphene are widely used in sib because of their diversity of structure and chemical properties. These materials store sodium ions differently, and graphite needs to be modified for better performance. Hard and soft carbon provide high capacity but have problems with electrical conductivity and expansion. Carbon nanostructures, including graphene, have many active sites but are expensive to produce. To improve the properties of carbon materials, strategies such as increasing layer spacing, controlling porosity, and introducing defects are discussed. Understanding the structure of the substance and the mechanism of sodium storage is crucial. The future of sib carbon anodes includes the pursuit of green, low-cost materials, and synthesis methods, as well as the use of advanced technologies for material optimization.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235721"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656576","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235761
Pradyumna Kumar Behera , Karan Gupta , Monalisa Pattnaik
Nowadays, adoption of supercapacitors (SC) as secondary power reservoir is a growing trend in electric vehicles (EVs). This paper delineates motoring and regenerative braking control of a hybrid energy storage unit (HESU) fed brushless direct current motor (BLDCM) based EV drivetrain. The topology comprises SC-battery with an inductor in series at input side to resist current transients in battery diverting to SC. As both exhibit limitations in terms of power and energy density respectively, the composite combination offers an optimized energy storage solution. SC helps in prolonging battery lifespan by managing frequent charging/discharging phenomenon. Additionally, SC contributes efficiently handling power during regenerative braking and acceleration phases. The regenerative braking capability of BLDCM is utilized to harness power and replenish the stored energy of battery/SC. The effectiveness of the EV drivetrain is verified through simulation in MATLAB/Simulink under different operating scenarios, showcasing its potential for low-voltage EVs during heavy traffic that requires frequent starts and stops or hilly terrain. Furthermore, a laboratory test-bed of the same architecture is developed to verify controller performance under different loading as well as speeds of BLDCM showcasing efficient operation. This research showcases immense potential as a future outlook for evolution of EV technology.
{"title":"Hybrid energy storage unit fed motoring and regenerative braking control of electric vehicle drivetrain","authors":"Pradyumna Kumar Behera , Karan Gupta , Monalisa Pattnaik","doi":"10.1016/j.jpowsour.2024.235761","DOIUrl":"10.1016/j.jpowsour.2024.235761","url":null,"abstract":"<div><div>Nowadays, adoption of supercapacitors (SC) as secondary power reservoir is a growing trend in electric vehicles (EVs). This paper delineates motoring and regenerative braking control of a hybrid energy storage unit (HESU) fed brushless direct current motor (BLDCM) based EV drivetrain. The topology comprises SC-battery with an inductor in series at input side to resist current transients in battery diverting to SC. As both exhibit limitations in terms of power and energy density respectively, the composite combination offers an optimized energy storage solution. SC helps in prolonging battery lifespan by managing frequent charging/discharging phenomenon. Additionally, SC contributes efficiently handling power during regenerative braking and acceleration phases. The regenerative braking capability of BLDCM is utilized to harness power and replenish the stored energy of battery/SC. The effectiveness of the EV drivetrain is verified through simulation in MATLAB/Simulink under different operating scenarios, showcasing its potential for low-voltage EVs during heavy traffic that requires frequent starts and stops or hilly terrain. Furthermore, a laboratory test-bed of the same architecture is developed to verify controller performance under different loading as well as speeds of BLDCM showcasing efficient operation. This research showcases immense potential as a future outlook for evolution of EV technology.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235761"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656505","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235774
M. Mahabubur Rahman , Md Tareq Rahman , Sarwar Hossen , Bappa Sarkar , Soon Chang Lee , Yongmin Jung , Joon S. Shim
High-energy-density graphene-based anodes as lithium-ion batteries have attracted considerable attention for space-constrained applications, including portable devices and electric cars, boosting energy efficiency, performance, and usability. In this work, for the first time, the polyethersulfone sheet (PES-sheet) has been developed by conventional hot-embossing processes and fabricated into a vertically-ionically conductive porous multi-layered and high-energy density free-standing thick graphene sheet using laser-induced graphene (LIG) techniques. Additionally, the hexagonal pores on the PES sheet increase the lithiation and de-lithiation processes without reducing capacity; therefore, the battery lifecycle improves. Scanning electron microscopy(SEM) and optical images investigate the multi-layer-free-standing thick graphene sheet hexagonal-pore, vertically connected and supported by polymer. Also, PES porous LIG formation is studied using Raman spectroscopy and energy dispersive spectroscopy (EDS). The proposed anode as a lithium-ion battery demonstrates capacity retention of 80.70 % from the specific capacity 710 mA h/g at 0.1C and maintains 99 % coulombic efficiency over 200 cycles. Furthermore, the proposed anode as a lithium-ion battery demonstrates a 30 % increase in aerial capacity compared to the commercially available Kapton film. Thus, the multi-layer-free-standing thick graphene LIG anode combined with the simple fabrication techniques and binders-free non-hazardous approach is a promising energy storage candidate for lithium-ion batteries.
基于高能量密度石墨烯的锂离子电池阳极在空间受限的应用领域（包括便携式设备和电动汽车）引起了广泛关注，它可以提高能源效率、性能和可用性。在这项研究中，我们首次采用传统的热压花工艺开发出了聚醚砜片材（PES-sheet），并利用激光诱导石墨烯（LIG）技术将其制成了垂直离子导电的多孔多层高能量密度独立厚石墨烯片材。此外，PES 薄膜上的六角形孔隙在不降低容量的情况下增加了锂化和去锂化过程，从而提高了电池的生命周期。扫描电子显微镜（SEM）和光学图像研究了垂直连接并由聚合物支撑的多层独立厚石墨烯片六角孔。此外，还利用拉曼光谱和能量色散光谱（EDS）研究了 PES 多孔锂离子电池组的形成。所提出的锂离子电池负极在 0.1C 时的比容量为 710 mA h/g，其容量保持率为 80.70%，并在 200 次循环中保持 99% 的库仑效率。此外，与市场上销售的 Kapton 薄膜相比，这种锂离子电池阳极的气动容量提高了 30%。因此，多层无支架厚石墨烯 LIG 阳极与简单的制造技术和无粘合剂的无害方法相结合，是一种很有前途的锂离子电池储能候选材料。
{"title":"Polyethersulfone-based thick polymer-supported graphene sheet for high energy density lithium-ion battery","authors":"M. Mahabubur Rahman , Md Tareq Rahman , Sarwar Hossen , Bappa Sarkar , Soon Chang Lee , Yongmin Jung , Joon S. Shim","doi":"10.1016/j.jpowsour.2024.235774","DOIUrl":"10.1016/j.jpowsour.2024.235774","url":null,"abstract":"<div><div>High-energy-density graphene-based anodes as lithium-ion batteries have attracted considerable attention for space-constrained applications, including portable devices and electric cars, boosting energy efficiency, performance, and usability. In this work, for the first time, the polyethersulfone sheet (PES-sheet) has been developed by conventional hot-embossing processes and fabricated into a vertically-ionically conductive porous multi-layered and high-energy density free-standing thick graphene sheet using laser-induced graphene (LIG) techniques. Additionally, the hexagonal pores on the PES sheet increase the lithiation and de-lithiation processes without reducing capacity; therefore, the battery lifecycle improves. Scanning electron microscopy(SEM) and optical images investigate the multi-layer-free-standing thick graphene sheet hexagonal-pore, vertically connected and supported by polymer. Also, PES porous LIG formation is studied using Raman spectroscopy and energy dispersive spectroscopy (EDS). The proposed anode as a lithium-ion battery demonstrates capacity retention of 80.70 % from the specific capacity 710 mA h/g at 0.1C and maintains 99 % coulombic efficiency over 200 cycles. Furthermore, the proposed anode as a lithium-ion battery demonstrates a 30 % increase in aerial capacity compared to the commercially available Kapton film. Thus, the multi-layer-free-standing thick graphene LIG anode combined with the simple fabrication techniques and binders-free non-hazardous approach is a promising energy storage candidate for lithium-ion batteries.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235774"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656584","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}
Pub Date : 2024-11-11DOI: 10.1016/j.jpowsour.2024.235793
Hanxue Zhao , Wendong Xu , Mai Li , Zheyi Meng , Inaam Ullah , Muhammad Zubair Nawaz , Jiale Wang , Chunrui Wang , Paul K. Chu
The three-dimensional conductive porous carbon nanosheets (CPCN) are from the bimetallic metal-organic framework (MOFs) consisting of organic ligating groups that incorporate zinc and cobalt ions deposited onto a flexible carbon cloth (CC). Utilizing a hydrothermal approach, iron-cobalt oxide (FCO) nanowires are intricately embedded onto CPCN modified with gold (Au), forming a flexible FCO/Au/CPCN@CC electrode. The electrochemical characteristics of electrodes are evaluated in 1 M Na2SO4, supercapacitor's storage capacity is tested at 4 V using 1 M NaPF6 electrolyte. Among its remarkable attributes are a peak energy density of 291.5 W h kg−1 achieved at a power density of 153.85 W kg−1, and even at the maximum power density of 1749.9 W kg−1, it maintains 144.78 W h kg−1. Undergoing 10,000 rounds of GCD, the equipment sustains a capacitance retention of 84.27 %. Moreover, the performance of the FCO/Au/CPCN@CC anode in sodium-ion batteries (SIBs) is assessed. At 0.1C, the discharge capacity reaches 958 mAh g−1, and there is almost no loss after the rate cycle. The Coulomb efficiency surpasses 98 % during 500 cycles at a large C-rate. The integration of Au nanoparticles onto the CPNC surface enhances the energy storage characteristic of the FCO/Au/CPCN@CC composite material in both battery and supercapacitor applications.
三维导电多孔碳纳米片（CPCN）来自双金属金属有机框架（MOF），该框架由有机配位基团组成，将锌和钴离子沉积在柔性碳布（CC）上。利用水热法将铁钴氧化物（FCO）纳米线错综复杂地嵌入到用金（Au）修饰的 CPCN 上，形成了柔性 FCO/Au/CPCN@CC 电极。在 1 M Na2SO4 中对电极的电化学特性进行了评估，并使用 1 M NaPF6 电解质在 4 V 电压下测试了超级电容器的存储容量。其显著特点包括：在功率密度为 153.85 W kg-1 时，峰值能量密度达到 291.5 W h kg-1；即使在最大功率密度为 1749.9 W kg-1 时，也能保持 144.78 W h kg-1。在进行 10,000 次 GCD 时，设备的电容保持率为 84.27%。此外，还评估了 FCO/Au/CPCN@CC 阳极在钠离子电池 (SIB) 中的性能。在 0.1C 下，放电容量达到 958 mAh g-1，并且在速率循环后几乎没有损失。在大 C 速率下循环 500 次，库仑效率超过 98%。金纳米颗粒与 CPNC 表面的结合增强了 FCO/Au/CPCN@CC 复合材料在电池和超级电容器应用中的储能特性。
{"title":"(Fe, Co) oxide nanowires on gold nanoparticles modified MOF-derived carbon nanoflakes for high-efficiency sodium-ion batteries and supercapacitors across electrolytes","authors":"Hanxue Zhao , Wendong Xu , Mai Li , Zheyi Meng , Inaam Ullah , Muhammad Zubair Nawaz , Jiale Wang , Chunrui Wang , Paul K. Chu","doi":"10.1016/j.jpowsour.2024.235793","DOIUrl":"10.1016/j.jpowsour.2024.235793","url":null,"abstract":"<div><div>The three-dimensional conductive porous carbon nanosheets (CPCN) are from the bimetallic metal-organic framework (MOFs) consisting of organic ligating groups that incorporate zinc and cobalt ions deposited onto a flexible carbon cloth (CC). Utilizing a hydrothermal approach, iron-cobalt oxide (FCO) nanowires are intricately embedded onto CPCN modified with gold (Au), forming a flexible FCO/Au/CPCN@CC electrode. The electrochemical characteristics of electrodes are evaluated in 1 M Na<sub>2</sub>SO<sub>4</sub>, supercapacitor's storage capacity is tested at 4 V using 1 M NaPF<sub>6</sub> electrolyte. Among its remarkable attributes are a peak energy density of 291.5 W h kg<sup>−1</sup> achieved at a power density of 153.85 W kg<sup>−1</sup>, and even at the maximum power density of 1749.9 W kg<sup>−1</sup>, it maintains 144.78 W h kg<sup>−1</sup>. Undergoing 10,000 rounds of GCD, the equipment sustains a capacitance retention of 84.27 %. Moreover, the performance of the FCO/Au/CPCN@CC anode in sodium-ion batteries (SIBs) is assessed. At 0.1C, the discharge capacity reaches 958 mAh g<sup>−1</sup>, and there is almost no loss after the rate cycle. The Coulomb efficiency surpasses 98 % during 500 cycles at a large C-rate. The integration of Au nanoparticles onto the CPNC surface enhances the energy storage characteristic of the FCO/Au/CPCN@CC composite material in both battery and supercapacitor applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235793"},"PeriodicalIF":8.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656437","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}
Pub Date : 2024-11-07DOI: 10.1016/j.jpowsour.2024.235787
Zhengyu Yang , Ben Ma , Yingke Zhou
The development of highly efficient and durable bifunctional electrocatalysts is crucial for rechargeable zinc-air batteries, which have garnered significant attention as a promising sustainable energy storage technology. Herein, a novel Co-N-C-1050 catalyst is synthesized using a high-temperature gas transport method, where high purity cobalt powder and bamboo biomass aerogel are treated with ammonia gas at 1050 °C. The resulting catalyst exhibits a 3D interconnected porous network composed of dense carbon fibers, which atomically dispersed Co, N, and C elements are uniformly distributed. The synergistic integration of highly active Co single atoms and N-doped 3D carbon fiber aerogel enables Co-N-C-1050 to demonstrate excellent bifunctional electrocatalytic performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), comparable to commercial Pt/C and RuO2 catalysts. This catalyst has a half-wave potential of 0.842 V for ORR and a potential of 1.472 V at 10 mA cm−2 for OER, outperforming N-C-1050 and benchmark catalysts. A zinc-air battery is driven by Co-N-C-1050 achieves a high power density of 135 mW/cm2 and exceptional stability over 138 h of charge/discharge cycling, surpassing the higher-cost Pt/C + RuO2 catalyst. This biomass aerogel based single-site Co-N-C catalyst offers a promising approach for developing high-efficiency and long-cycle-life zinc-air batteries.
高效耐用的双功能电催化剂的开发对于可充电锌-空气电池至关重要，锌-空气电池作为一种前景广阔的可持续能源存储技术已引起广泛关注。本文采用高温气体传输方法合成了一种新型 Co-N-C-1050 催化剂，即在 1050 °C 下用氨气处理高纯度钴粉和竹生物质气凝胶。所得催化剂由致密的碳纤维组成三维互连多孔网络，原子分散的 Co、N 和 C 元素均匀分布。高活性 Co 单原子与掺杂 N 的三维碳纤维气凝胶的协同整合，使 Co-N-C-1050 在氧还原反应（ORR）和氧进化反应（OER）中表现出卓越的双功能电催化性能，可与商用 Pt/C 和 RuO2 催化剂媲美。这种催化剂在进行 ORR 反应时的半波电位为 0.842 V，在 10 mA cm-2 时进行 OER 反应时的电位为 1.472 V，性能优于 N-C-1050 和基准催化剂。由 Co-N-C-1050 驱动的锌-空气电池实现了 135 mW/cm2 的高功率密度和 138 h 充放电循环的卓越稳定性，超过了成本更高的 Pt/C + RuO2 催化剂。这种基于生物质气凝胶的单位 Co-N-C 催化剂为开发高效率、长循环寿命的锌-空气电池提供了一种前景广阔的方法。
{"title":"Bamboo-derived aerogel with atomically dispersed Co as a high-performance bifunctional electrocatalyst for durable zinc-air batteries","authors":"Zhengyu Yang , Ben Ma , Yingke Zhou","doi":"10.1016/j.jpowsour.2024.235787","DOIUrl":"10.1016/j.jpowsour.2024.235787","url":null,"abstract":"<div><div>The development of highly efficient and durable bifunctional electrocatalysts is crucial for rechargeable zinc-air batteries, which have garnered significant attention as a promising sustainable energy storage technology. Herein, a novel Co-N-C-1050 catalyst is synthesized using a high-temperature gas transport method, where high purity cobalt powder and bamboo biomass aerogel are treated with ammonia gas at 1050 °C. The resulting catalyst exhibits a 3D interconnected porous network composed of dense carbon fibers, which atomically dispersed Co, N, and C elements are uniformly distributed. The synergistic integration of highly active Co single atoms and N-doped 3D carbon fiber aerogel enables Co-N-C-1050 to demonstrate excellent bifunctional electrocatalytic performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), comparable to commercial Pt/C and RuO<sub>2</sub> catalysts. This catalyst has a half-wave potential of 0.842 V for ORR and a potential of 1.472 V at 10 mA cm<sup>−2</sup> for OER, outperforming N-C-1050 and benchmark catalysts. A zinc-air battery is driven by Co-N-C-1050 achieves a high power density of 135 mW/cm<sup>2</sup> and exceptional stability over 138 h of charge/discharge cycling, surpassing the higher-cost Pt/C + RuO<sub>2</sub> catalyst. This biomass aerogel based single-site Co-N-C catalyst offers a promising approach for developing high-efficiency and long-cycle-life zinc-air batteries.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235787"},"PeriodicalIF":8.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656578","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}
Pub Date : 2024-11-07DOI: 10.1016/j.jpowsour.2024.235764
Ying Yu , Dan Li , Qiao Guo , Manli Wang , Hongjie Zhang , Qingda An , Longsheng Cao
Rechargeable non-alkaline zinc-air batteries (ZABs) address the CO₂ incompatibility and instability issues of conventional alkaline batteries. However, the impact of solid discharge products like zinc oxide on discharge capacity at the air cathode remains unexplored. In this study, we investigate how anions influence ion pair solvation structures using Zinc trifluoromethanesulfonate (Zn(OTF)₂)-N, N-dimethylformamide (DMF) and Zinc acetate (Zn(Ac)₂)-DMF electrolytes, and how these structures affect the distribution of discharge product. Our finding shows that anions with lower donor numbers (DNs), like the weaker ligand OTF- (20.5), enhance the zinc ion activity and promote rapid Zn2⁺ reactions with oxygen during discharge, leading to a more than tenfold increase in discharge capacity. In contrast, acetate anions with higher DNs (43.3) form stable complexes, inhibiting zinc ion activity and causing the formation of film-like discharge products, which reduces ZAB performance. The Zn(OTF)₂-DMF electrolyte also enables a battery lifespan of over 200 h, more than fivefold compared to the acetate-based system.
{"title":"Anion-induced optimization of non-aqueous zinc-air battery performance: Insights into OTF− selection","authors":"Ying Yu , Dan Li , Qiao Guo , Manli Wang , Hongjie Zhang , Qingda An , Longsheng Cao","doi":"10.1016/j.jpowsour.2024.235764","DOIUrl":"10.1016/j.jpowsour.2024.235764","url":null,"abstract":"<div><div>Rechargeable non-alkaline zinc-air batteries (ZABs) address the CO₂ incompatibility and instability issues of conventional alkaline batteries. However, the impact of solid discharge products like zinc oxide on discharge capacity at the air cathode remains unexplored. In this study, we investigate how anions influence ion pair solvation structures using Zinc trifluoromethanesulfonate (Zn(OTF)₂)-N, N-dimethylformamide (DMF) and Zinc acetate (Zn(Ac)₂)-DMF electrolytes, and how these structures affect the distribution of discharge product. Our finding shows that anions with lower donor numbers (DNs), like the weaker ligand OTF<sup>-</sup> (20.5), enhance the zinc ion activity and promote rapid Zn<sup>2</sup>⁺ reactions with oxygen during discharge, leading to a more than tenfold increase in discharge capacity. In contrast, acetate anions with higher DNs (43.3) form stable complexes, inhibiting zinc ion activity and causing the formation of film-like discharge products, which reduces ZAB performance. The Zn(OTF)₂-DMF electrolyte also enables a battery lifespan of over 200 h, more than fivefold compared to the acetate-based system.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"626 ","pages":"Article 235764"},"PeriodicalIF":8.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656583","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}
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