Energy Storage Materials最新文献_第5页

Stimulating the electrostatic interactions in composite cathodes using a slurry-fabricable polar binder for practical all-solid-state batteries 使用可制成浆料的极性粘合剂激发复合阴极中的静电相互作用，以制造实用的全固态电池

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103855

Woo-Hyun Jeong , Hyerim Kim , Shivam Kansara , Seungwon Lee , Marco Agostini , KyungSu Kim , Jang-Yeon Hwang , Yun-Chae Jung

In this work, poly vinylidene fluoride–chlorotrifluoroethylene (PVdF-CTFE) is introduced as a slurry-fabricable polymer binder to fabricate a stable composite cathode using the complex materials of a Li[Ni_0.7Co_0.1Mn_0.2]O₂ cathode, Li₆PS₅Cl electrolyte, and super C carbon, for sulfide-based all-solid-state batteries (ASSBs). The high electronegativity of fluorine in the poly(vinylidene fluoride–chlorotrifluoroethylene (PVdF-CTFE) binder creates a polarized electronic environment in the composite cathode, promoting electrostatic interactions with Li ions. Compared with that of butadiene rubber (BR), the PVdF-CTFE binder has a stronger binding energy to the complex materials in the composite cathode, which enhances the mechanical rigidity of the composite cathode with highly uniform adhesion. In addition, uniform and close contact between the complex materials in the composite cathode reduces the resistance at the interfaces, lowering the energy barrier for Li⁺ diffusion, and eventually creates a fast Li⁺ diffusion pathway in the composite cathode. Thus, the pouch-type ASSBs cell, which comprises the composite cathode with the PVdF-CTFE binder, Li₆PS₅Cl electrolyte sheet, and silver-carbon (Ag/C) anodeless electrode delivers a high reversible capacity of 198.5 mAh g^–1 at 0.1 C and long-term cycling stability over 300 cycles with a capacity retention of 74.5 % at 0.5 C at 60 °C.

本研究采用聚偏氟乙烯-三氟氯乙烯（PVdF-CTFE）作为浆料可制备聚合物粘结剂，利用锂[Ni0.7Co0.1Mn0.2]O2阴极、Li6PS5Cl电解质和超C碳等复合材料制备出稳定的复合阴极，用于硫化物全固态电池（ASSB）。聚偏氟乙烯-三氟氯乙烯（PVdF-CTFE）粘合剂中氟的高电负性在复合阴极中创造了极化电子环境，促进了与锂离子的静电相互作用。与丁二烯橡胶（BR）相比，PVdF-CTFE 粘合剂与复合阴极中的复合材料具有更强的结合能，从而增强了复合阴极的机械刚性，并具有高度均匀的粘附性。此外，复合阴极中复合材料之间均匀而紧密的接触降低了界面电阻，降低了 Li+ 扩散的能量障碍，最终在复合阴极中形成了一条快速的 Li+ 扩散通道。因此，由带有 PVdF-CTFE 粘合剂的复合阴极、Li6PS5Cl 电解质薄片和银碳（Ag/C）无锂阳极组成的袋式 ASSBs 电池在 0.1 摄氏度时的可逆容量高达 198.5 mAh g-1，并且在 60 摄氏度、0.5 摄氏度的条件下可长期稳定循环 300 次，容量保持率达 74.5%。

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引用次数: 0

Impact of 3D printed MXene electrodes on energy storage: Different dimensionalities, electrochemistry and performance optimization of printable MXene ink 三维打印 MXene 电极对储能的影响：可打印 MXene 油墨的不同尺寸、电化学和性能优化

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103873

Chandan Kumar Maity , Shrabani De , Amrita De Adhikari , Annu Kumari , Kartikey Verma , Md Moniruzzaman , Sumanta Sahoo

MXene and 3D printing technology are the pioneers of modern energy-related research. 3D printing, or, additive manufacturing has garnered a lot of devotion because of its ease of use and speed in producing simple prototypes. Nevertheless, MXenes, similar to other 2D materials, show an agglomeration tendency, which restricts electrolyte flow and utilization of the effective surface area. They easily oxidize at high anode potentials also, which additionally lowers the stability of the electrode. An effective way to overcome these problems is to rationally design and create MXene-based electrodes employing 3D printing technology for energy storage, which is a programmed-based manufacturing method that can regulate scalability, product design, and reproducibility. Additionally, there is a huge demand for printable, wearable, and stretchable electronic devices for energy storage. Regarding this, 3D printing technology has shown satisfactory potentiality for constructing high-performance energy storage electrodes and devices. Herein, the recent advancements in 3D printing technologies for constructing advanced MXene-based electrodes for energy storage applications are highlighted. Moreover, the dimensionalities and electrochemistry of different MXenes are emphasized briefly. This review also summarizes the performance optimizations for the printable MXene inks to fabricate efficient 3D-printed electrodes for supercapacitors and secondary batteries. The current application of 3D-printable MXene-based electrodes for supercapacitors and secondary batteries is extensively reviewed. Finally, this article concludes with the future directions and existing research challenges in this field.

MXene 和三维打印技术是现代能源相关研究的先驱。三维打印（或称增材制造）因其在生产简单原型方面的易用性和快速性而备受青睐。然而，MXenes 与其他二维材料类似，具有团聚倾向，从而限制了电解质的流动和有效表面积的利用。在阳极电位较高的情况下，它们也很容易氧化，从而降低了电极的稳定性。克服这些问题的有效方法是采用 3D 打印技术合理设计和制造基于 MXene 的储能电极，这是一种基于程序的制造方法，可以调节可扩展性、产品设计和可重复性。此外，市场对可打印、可穿戴和可拉伸的储能电子设备需求巨大。在这方面，3D 打印技术在构建高性能储能电极和设备方面显示出令人满意的潜力。在此，我们将重点介绍三维打印技术在构建用于储能应用的先进 MXene 基电极方面的最新进展。此外，还简要介绍了不同二氧化二烯的尺寸和电化学特性。本综述还总结了可打印 MXene 油墨的性能优化，以制造用于超级电容器和二次电池的高效 3D 打印电极。文章还广泛综述了目前可三维打印的基于 MXene 的超级电容器和二次电池电极的应用。最后，本文总结了该领域的未来发展方向和现有研究挑战。

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引用次数: 0

Regulating H-bonded network of aqueous electrolytes for stable and energy-dense Al-air batteries 调节水基电解质的氢键网络，实现稳定的高能量铝-空气电池

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103772

Yuzhao Xu , Qian Zhao , Chaonan Lv , Yuanxin Zhu , Yuxin Zhang , Fengyang Peng , Qing Zhao , Zhiguang Peng , Yixin Li , Yougen Tang

Aluminum-air batteries offer unique advantages over other aqueous batteries in terms of environmental friendliness, energy density, resource abundance, and cost-effectiveness. Nevertheless, the parasitic hydrogen evolution reaction (HER) of anode presents severe challenges for stable and long-term operation of batteries. Here we found that the mixed solution with strong H-bond network has a significant inhibitory effect on the self-discharge and HER of Al anode in alkaline electrolyte. And establishing the relationship between the molecular structure of the cosolvent (carbon chain lengths and hydrogen bond acceptors) and the strength of the hydrogen bonding network of the electrolyte. The as-constructed Al-air battery with ethylene glycol (EG) cosolvent demonstrates a remarkable increased discharge specific capacity of 2725 mAh g^-1, corresponding to the Al anode utilization of 91.4 %. The operation time also extends to 160 h at 5 mA cm^-2. This work provides new avenues to understand the role of H₂O in aqueous electrolytes and explore low-cost and effective approaches for the development of next-generation aqueous Al-air batteries.

与其他水电池相比，铝空气电池在环境友好、能量密度、资源丰富和成本效益方面具有独特的优势。然而，阳极的寄生氢演化反应（HER）给电池的长期稳定运行带来了严峻挑战。在这里，我们发现具有强氢键网络的混合溶液对碱性电解液中铝阳极的自放电和氢化反应具有显著的抑制作用。并建立了共溶剂分子结构（碳链长度和氢键受体）与电解液氢键网络强度之间的关系。使用乙二醇（EG）共溶剂构建的铝空气电池的放电比容量显著提高，达到 2725 mAh g-1，相当于 91.4% 的铝阳极利用率。在 5 mA cm-2 的条件下，运行时间也延长至 160 小时。这项研究为了解 H2O 在水性电解质中的作用提供了新的途径，并为开发下一代水性铝-空气电池探索了低成本和有效的方法。

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引用次数: 0

Modulating interfacial Zn2+ deposition mode towards stable Zn anode via bimetallic co-doped coating 通过双金属共掺涂层调节界面 Zn2+ 沉积模式，实现稳定的锌阳极

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103834

Xuefang Xie , Longfei Deng , Lanyan Li , Anqiang Pan , Shuquan Liang , Guozhao Fang

Artificial coatings represent the promising means to address the interfacial issues of Zn anode, but it poses a significant challenge to their stability due to the fatigue and resulting cracking of coatings during repeated cycling. Here, a functional coating with the synergistic effect of bimetallic co-doping was developed, which changes the Zn²⁺ deposition mode to interlayer deposition in coating. The simultaneous doping of Cu²⁺ and In³⁺ reduces the pyrrolic N content and enhances the adsorption of Zn²⁺ in the active sites. Bimetallic co-doping results in an increase in specific surface area and a decrease in pore size, thus providing more active sites. As well as enhanced electrical conductivity, electrons can enter between the coatings, thus promoting redox reactions between the layers. Therefore, it endows surface coating with low polarization and stress buffering simultaneously, which avoids cracking and stripping of coatings during cycling. As a result, the cycle life of CuInZIF-8@Zn||CuInZIF-8@Zn symmetric cell exhibits more than 1200 h at 5 mA cm⁻² and 5 mAh cm⁻². The CuInZIF-8@Zn anode can match multiple types of cathodes and achieve excellent cycling stability; For instance, it can cycle stably for 3000 cycles when paired with vanadium-based cathode. This work provides a new perspective of artificial coatings towards highly stable Zn anode.

人工涂层是解决锌阳极界面问题的有效手段，但由于涂层在反复循环过程中会产生疲劳并导致开裂，这对涂层的稳定性提出了巨大挑战。在此，我们开发了一种具有双金属共掺杂协同效应的功能涂层，它将 Zn2+ 沉积模式改变为涂层中的层间沉积。Cu2+ 和 In3+ 的同时掺杂降低了吡咯烷酮 N 的含量，增强了 Zn2+ 在活性位点的吸附。双金属共掺杂使比表面积增加，孔径减小，从而提供了更多的活性位点。在增强导电性的同时，电子还能进入涂层之间，从而促进层间的氧化还原反应。因此，它同时赋予了表面涂层低极化和应力缓冲的特性，从而避免了涂层在循环过程中开裂和剥离。因此，在 5 mA cm-2 和 5 mAh cm-2 条件下，CuInZIF-8@Zn||CuInZIF-8@Zn 对称电池的循环寿命超过 1200 小时。CuInZIF-8@Zn阳极可与多种类型的阴极配对，并实现优异的循环稳定性；例如，与钒基阴极配对时，可稳定循环 3000 次。这项工作为人工镀膜实现高稳定性锌阳极提供了一个新的视角。

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引用次数: 0

Corrigendum to “Degradation mechanism and assessment for different cathode based commercial pouch cells under different pressure boundary conditions” [Volume 73, November 2024, 103793] <第 73 卷，2024 年 11 月，103793> 更正

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103811

Kaixin Chen , Yahui Xu , Hang Wu , Jiangong Zhu , Xueyuan Wang , Siqi Chen , Xuezhe Wei , Haifeng Dai

引用次数: 0

Halogenated solvation structure and preferred Zn (002) deposition via trace additive towards high reversibility for aqueous zinc-ion batteries 通过微量添加剂实现卤化溶解结构和优先锌 (002) 沉积，从而实现锌离子水电池的高可逆性

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103869

Xue Chen , Shijia Li , Kai Wang , Huiling Zhao , Guanjie He , Ying Bai

Tremendous progress has been achieved in cathode materials for aqueous zinc-ion batteries (AZIBs), however their practical applications are hindered by the poor cycling stability of Zn anode. Herein, amphiphilic choline bromine (ChBr) is introduced as additive into highly-concentrated ZnSO₄ aqueous electrolyte, which not only regulates the traditional Zn²⁺ solvation structure but also establishes an electrostatic shielding layer at electrolyte-anode interface. Compared to the pristine 3 M ZnSO₄ electrolyte, ChBr-modified ZnSO₄ electrolyte (ZSO-ChBr) is proven effective in promoting the reversibility of zinc plating/stripping and the preferred growth of Zn (002) plane, as well as suppressing the hydrogen evolution and side reactions on Zn anode surface. As a result, Zn||Zn symmetric cell in optimal ZSO-ChBr electrolyte could harvest a remarkable lifespan over 6000 h at 5 mA cm⁻² and 1 mAh cm⁻², besides a highly-reversible zinc plating/stripping process over 1500 cycles was achieved in Zn||Cu asymmetric cell. Moreover, the Zn||MnO₂ full cell could exhibit an excellent rate capability and the cycling stability with a capacity retention of 80 % after 400 cycles. This work provides an integrated strategy of electrolyte engineering to elevate the desolvation kinetics of Zn²⁺ at anode-electrolyte interface and enhance the cycling stability of Zn anode, effectively improving the electrochemical performances of aqueous zinc-ion batteries (AZIBs) and promoting the development of various energy storage systems.

水性锌离子电池（AZIBs）的阴极材料取得了巨大进步，但由于锌阳极的循环稳定性较差，阻碍了其实际应用。在这里，两亲性胆碱溴（ChBr）作为添加剂被引入到高浓度的 ZnSO4 水电解液中，它不仅调节了传统的 Zn2+ 溶解结构，还在电解液-阳极界面上建立了静电屏蔽层。与原始的 3 M ZnSO4 电解质相比，ChBr 改性 ZnSO4 电解质（ZSO-ChBr）被证明能有效促进锌镀层/剥离的可逆性和 Zn (002) 平面的优先生长，并抑制锌阳极表面的氢演化和副反应。因此，在最佳的 ZSO-ChBr 电解液中，Zn||Zn 对称电池在 5 mA cm-2 和 1 mAh cm-2 的条件下可获得超过 6000 小时的超长寿命。此外，Zn||MnO2 全电池还表现出卓越的速率能力和循环稳定性，400 次循环后容量保持率达 80%。这项工作提供了一种电解质工程的综合策略，以提高阳极-电解质界面上Zn2+的解溶解动力学，并增强锌阳极的循环稳定性，从而有效改善水性锌离子电池（AZIBs）的电化学性能，促进各种储能系统的发展。

{"title":"Halogenated solvation structure and preferred Zn (002) deposition via trace additive towards high reversibility for aqueous zinc-ion batteries","authors":"Xue Chen , Shijia Li , Kai Wang , Huiling Zhao , Guanjie He , Ying Bai","doi":"10.1016/j.ensm.2024.103869","DOIUrl":"10.1016/j.ensm.2024.103869","url":null,"abstract":"<div><div>Tremendous progress has been achieved in cathode materials for aqueous zinc-ion batteries (AZIBs), however their practical applications are hindered by the poor cycling stability of Zn anode. Herein, amphiphilic choline bromine (ChBr) is introduced as additive into highly-concentrated ZnSO<sub>4</sub> aqueous electrolyte, which not only regulates the traditional Zn<sup>2+</sup> solvation structure but also establishes an electrostatic shielding layer at electrolyte-anode interface. Compared to the pristine 3 M ZnSO<sub>4</sub> electrolyte, ChBr-modified ZnSO<sub>4</sub> electrolyte (ZSO-ChBr) is proven effective in promoting the reversibility of zinc plating/stripping and the preferred growth of Zn (002) plane, as well as suppressing the hydrogen evolution and side reactions on Zn anode surface. As a result, Zn||Zn symmetric cell in optimal ZSO-ChBr electrolyte could harvest a remarkable lifespan over 6000 h at 5 mA cm<sup>−2</sup> and 1 mAh cm<sup>−2</sup>, besides a highly-reversible zinc plating/stripping process over 1500 cycles was achieved in Zn||Cu asymmetric cell. Moreover, the Zn||MnO<sub>2</sub> full cell could exhibit an excellent rate capability and the cycling stability with a capacity retention of 80 % after 400 cycles. This work provides an integrated strategy of electrolyte engineering to elevate the desolvation kinetics of Zn<sup>2+</sup> at anode-electrolyte interface and enhance the cycling stability of Zn anode, effectively improving the electrochemical performances of aqueous zinc-ion batteries (AZIBs) and promoting the development of various energy storage systems.</div></div>","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"73 ","pages":"Article 103869"},"PeriodicalIF":18.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring new fields of supercapacitors by regulating metal ions in MOFs 通过调节 MOF 中的金属离子探索超级电容器的新领域

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103859

Haonan Li , Yanzhen Liu , Xiangru Zhu , Yongfeng Li , Chengmeng Chen

In the context of escalating energy demands and the imperative for sustainable energy solutions, this review delves into the promising realm of metal-organic frameworks (MOFs)-based supercapacitors (SCs) and their enhancement. SCs are heralded for their high power density, long cycle life, and environmental friendliness compared to traditional batteries. MOFs, with their high surface area, tunable pore structures and diverse chemical compositions, emerge as exceptional candidates for SC electrodes. This review explores the synthesis, structural modifications, and electrochemical performance of both monometallic and bimetallic MOFs, emphasizing their unique structural advantages and electroactive sites. The synergistic effects of incorporating different metal ions into MOFs significantly enhance their conductivity, stability, and overall electrochemical performance. The discussion extends to the challenges and future opportunities in this field, suggesting a focus on developing advanced synthesis techniques, optimizing metal ion doping, and integrating MOFs with conductive materials to create flexible and scalable energy storage solutions.

在能源需求不断攀升、可持续能源解决方案势在必行的背景下，本综述深入探讨了超级电容器（SC）及其通过金属有机框架（MOFs）进行增强的前景广阔的领域。与传统电池相比，超级电容器具有功率密度高、循环寿命长和环保等优点。MOFs 具有高比表面积、可调孔隙结构和多种化学成分，因此成为极化电容器电极的理想候选材料。本综述探讨了单金属和双金属 MOFs 的合成、结构修饰和电化学性能，强调了它们独特的结构优势和电活性位点。在 MOFs 中加入不同金属离子可产生协同效应，显著提高其导电性、稳定性和整体电化学性能。讨论延伸到这一领域的挑战和未来机遇，建议重点开发先进的合成技术，优化金属离子掺杂，并将 MOFs 与导电材料集成，以创造灵活、可扩展的储能解决方案。

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引用次数: 0

A small amount of sodium difluoro(oxalate)borate additive induces anion-derived interphases for sodium-ion batteries 少量二氟（草酸）硼酸钠添加剂可诱导钠离子电池的阴离子衍生相位

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103858

Qian Qiu , Tianle Zheng , Longqing Huang , Tonghui Xu , Lingchao Pan , Wei Sun , Haoran Tian , Wenjun Zhang , Qian Yu , Yuxin Liang , Yingying Yan , Jinliang Yuan , Peter Müller-Buschbaum , Lan Xia

In sodium-ion batteries, the properties of the electrode-electrolyte interphases (EEIs) layer formed on the electrode surface, dominate the Na⁺ de-solvation process and Na⁺ (de)intercalation behavior, thereby influencing the battery performance. Currently, both high-concentration electrolytes and localized high-concentration electrolytes facilitate the formation of anion-derived and inorganic-rich interfacial chemistry, leading to excellent electrochemical performance. However, the expensive lithium salt and/or fluorinated diluent imposes a major concern. Herein, a small amount additive of 0.5 wt% sodium difluoro(oxalate)borate (NaDFOB) with the electron-rich property is introduced into 1 mol L^–1 NaClO₄/propylene carbonate electrolyte to construct a robust inorganic-rich EEIs via an anion preferential adsorption-decomposition mechanism. Theoretical calculations and experimental results reveal that the DFOB^– anion has a lower adsorption energy than the other components, which will be preferentially adsorbed in the inner Helmholtz plane (IHP) with the closer proximity to two electrode surfaces and thus being firstly decomposed to form inorganic-rich interphases, thereby effectively suppressing side reactions. Consequently, both Na-ion half-cells and full-cells using this electrolyte deliver excellent cycling performance. This strategy that regulates the interphase chemistry on the electrode surface through an anion preferential adsorption-decomposition strategy, provides a promising avenue for developing long-term cycling sodium-ion batteries.

在钠离子电池中，电极表面形成的电极-电解质相间层（EEIs）的性质主导着 Na+ 的脱溶过程和 Na+（脱）插行为，从而影响电池性能。目前，高浓度电解质和局部高浓度电解质都有助于形成阴离子衍生和富含无机物的界面化学，从而实现优异的电化学性能。然而，昂贵的锂盐和/或含氟稀释剂是一个主要问题。本文在 1 mol L-1 NaClO4/碳酸丙烯酯电解液中引入了少量具有富电子特性的 0.5 wt% 二氟草酸硼酸钠（NaDFOB）添加剂，通过阴离子优先吸附-分解机制构建了稳健的富无机 EEIs。理论计算和实验结果表明，DFOB- 阴离子的吸附能比其他成分低，会优先吸附在内侧亥姆霍兹平面（IHP）上，更靠近两个电极表面，从而首先分解形成富无机相间，从而有效抑制副反应。因此，使用这种电解液的纳离子半电池和全电池都具有出色的循环性能。这种通过阴离子优先吸附-分解策略来调节电极表面相间化学性质的策略，为开发长期循环钠离子电池提供了一条前景广阔的途径。

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引用次数: 0

Untangling dendrite growth dynamics in hybrid flow batteries 弄清混合流动电池中树枝状晶粒的生长动态

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103864

Faheem Mushtaq, Yan Xiang, Muhammad Fahim, Xian Xie, Hong Zhao, Walid A. Daoud

Despite advancements, dendrite growth at the anode continues to be a persistent roadblock in accelerating the widespread deployment of hybrid flow batteries as the next-generation energy storage solution, due to the significant impact of dendrites on cycling performance and the potential for battery failure. The ability to analyze energy storage systems at micro-to-macro levels offers unprecedented insights into their behavior and performance. Herein, we develop a multiscale model utilizing phase-field method to investigate dendrite formation, growth, and stripping under operational conditions. The Zn-I system is employed to unravel the intricacies of dendrite evolution and its mitigation through strategic utilization of critical battery parameters. Our findings not only uncover precise zinc morphologies but also provide valuable insights into battery performance toward developing a strategy for mitigating dendrite growth and enhancing battery efficiency at high current density. To our knowledge, this is the first work to comprehensively untangle electrodeposition dynamics at multiscale in the field of flow battery and related research. The findings revolutionize our understanding of deposition behavior, driving transformative advancements in hybrid flow battery design and development, with potential applicability to other battery systems.

尽管取得了进步，但由于枝晶对循环性能和电池故障的潜在影响很大，因此阳极的枝晶生长仍然是加快混合液流电池作为下一代储能解决方案广泛应用的一个长期障碍。从微观到宏观层面分析储能系统的能力为深入了解其行为和性能提供了前所未有的视角。在此，我们利用相场方法开发了一种多尺度模型，用于研究运行条件下枝晶的形成、生长和剥离。我们利用 Zn-I 系统来揭示枝晶演化的复杂性，并通过战略性地利用关键电池参数来缓解枝晶演化。我们的研究结果不仅揭示了精确的锌形态，还为电池性能提供了有价值的见解，有助于制定在高电流密度下缓解枝晶生长和提高电池效率的策略。据我们所知，这是液流电池领域及相关研究中第一项在多尺度上全面解开电沉积动力学的工作。这些发现彻底改变了我们对沉积行为的理解，推动了混合液流电池设计和开发的变革性进步，并有可能适用于其他电池系统。

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引用次数: 0

Mixed-dimensional van der Waals heterostructure of Bi2S3 nanorods and SnS2 nanosheets bridged with N-doped carbon interlayer for enhanced sodium-ion batteries 用掺杂 N 的碳中间层桥接 Bi2S3 纳米棒和 SnS2 纳米片的混维范德华异质结构，用于增强型钠离子电池

IF 18.9 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Energy Storage Materials

Pub Date : 2024-11-01 DOI: 10.1016/j.ensm.2024.103880

Weiwei Chen , Zenghui Wang , Zhikang Huang , Wenju Xie , Jie Zhao , Yanhe Xiao , Shuijin Lei , Biwu Huang , Baochang Cheng

Heterostructure engineering offers significant potential to advance the energy storage capabilities of sodium-ion batteries (SIBs). The typical presence of rich surface states in nanosemiconductors, however, introduces substantial surface barriers that impede surface conductivity, thereby limiting the performance of batteries. Herein, we developed a mix-dimensional van der Waals heterostructure (Bi₂S₃@NC/SnS₂@NC) by synthesizing p-type SnS₂ nanosheets on n-type Bi₂S₃ nanorods, bridged with an ultrathin nitrogen-doped carbon (NC) layer. This structure served as an anode, improving electrochemical performance through additional redox reaction sites and a porous structure that supports electrolyte flow and Na⁺ transport. This reduces mechanical stress during charging cycles, maintaining structural integrity. Most critically, theoretical and experimental analyses show that the NC layer passivates interface states, enhancing the built-in electrical field and reducing electron and Na⁺ transport resistance, thereby boosting redox activity. Consequently, the Bi₂S₃@NC/SnS₂@NC anode exhibits a high specific capacity of 290 mAh g⁻¹ after 1400 cycles at 5 A g⁻¹, and 233.6 mAh g⁻¹ at a high rate of 10 A g⁻¹. In full-cell setups with Na₃V₂(PO₄)₃ cathodes, it can maintain 461.4 mAh g⁻¹ after 100 cycles at 0.1 A g⁻¹. This work demonstrates the crucial role of heterostructure engineering in advancing efficient energy storage solutions.

异质结构工程为提高钠离子电池（SIB）的储能能力提供了巨大潜力。然而，纳米半导体中通常存在丰富的表面态，这会引入大量的表面障碍，阻碍表面导电性，从而限制电池的性能。在此，我们在 n 型 Bi2S3 纳米棒上合成了 p 型 SnS2 纳米片，并用超薄掺氮碳（NC）层桥接，从而开发出一种混合维范德华异质结构（Bi2S3@NC/SnS2@NC）。这种结构可用作阳极，通过额外的氧化还原反应位点和支持电解质流动和 Na+ 传输的多孔结构提高电化学性能。这减少了充电周期中的机械应力，保持了结构的完整性。最重要的是，理论和实验分析表明，NC 层可钝化界面态，增强内置电场，降低电子和 Na+ 传输阻力，从而提高氧化还原活性。因此，Bi2S3@NC/SnS2@NC 阳极在 5 A g-1 条件下循环 1400 次后显示出 290 mAh g-1 的高比容量，在 10 A g-1 的高速率条件下显示出 233.6 mAh g-1 的比容量。在使用 Na3V2(PO4)3 阴极的全电池设置中，它能在 0.1 A g-1 下循环 100 次后保持 461.4 mAh g-1。这项工作证明了异质结构工程在推进高效储能解决方案中的关键作用。

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引用次数: 0