Jingyuan Li, Fei Wang, Chengzhi Zhang, Dai Dang, Quanbing Liu, Jun Tan
As an important part of the electrode material of lithium‐ion batteries, the binder significantly affects the forming strength of the solid electrolyte interface (SEI), and also determines the mechanical properties and cycling stability. In the silicon anode, binder have greater effect in the chemical and electrochemical stability because of the volume of the silicon anode changes by more than 300 %. Thus, the development of functional new binders with enhanced properties is one of the keys to mitigating the instability of silicon anodes. This concept first briefly introduces the advantages and disadvantages of conventional electrode binders, then the current research progress of silicon anode binders is briefly summarized based on the different types of interaction forces of binders. Finally, we conclude the properties indicators of silicon anode binders with superior performance in batteries, and comment our previous work in detail.
{"title":"Electrode Binder Design on Silicon‐Based Anode for Next‐Generation Lithium‐Ion Batteries","authors":"Jingyuan Li, Fei Wang, Chengzhi Zhang, Dai Dang, Quanbing Liu, Jun Tan","doi":"10.1002/batt.202400273","DOIUrl":"https://doi.org/10.1002/batt.202400273","url":null,"abstract":"As an important part of the electrode material of lithium‐ion batteries, the binder significantly affects the forming strength of the solid electrolyte interface (SEI), and also determines the mechanical properties and cycling stability. In the silicon anode, binder have greater effect in the chemical and electrochemical stability because of the volume of the silicon anode changes by more than 300 %. Thus, the development of functional new binders with enhanced properties is one of the keys to mitigating the instability of silicon anodes. This concept first briefly introduces the advantages and disadvantages of conventional electrode binders, then the current research progress of silicon anode binders is briefly summarized based on the different types of interaction forces of binders. Finally, we conclude the properties indicators of silicon anode binders with superior performance in batteries, and comment our previous work in detail.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Álvaro Seijas Da Silva, Víctor Oestreicher, Cristián Huck-Iriart, Martín Mizrahi, Diego Hunt, Valeria Ferrari, Gonzalo Abellán
Among the two‐dimensional (2D) materials, layered hydroxides (LHs) stand out due to their chemical versatility, allowing the modulation of physicochemical properties on demand. Specifically, LHs based on earth‐abundant elements are promising phases as electrode materials for energy storage. However, these materials exhibit significant drawbacks, such as low conductivity and in‐plane packing that limits electrolyte diffusion. Here, we explored the synthetic flexibility of α‐Co hydroxides to overcome these limitations. We elucidated the growth mechanism of 3D flower‐like α‐Co hydroxyhalides by using in‐situ SAXS experiments combined with thorough physicochemical, structural, and electrochemical characterization. Furthermore, we compared these findings with the most commonly employed Co‐based LHs: β‐Co(OH)2 and CoAl LDHs. While α‐Co LH phases inherently grow as 2D materials, ethanol triggers the formation of 3D‐arrangements of these layers, surpassing their 2D analogues in capacitive behavior. Additionally, by taking advantage of their anion‐dependent bandgap, we demonstrated that substituting halides from chloride to iodide enhances capacitive behavior by > 40%. This finding confirms the role of halides in modulating the electronic properties of LH, as supported by DFT+U calculations. Hence, this work provides fundamental insights into the 3D growth of α‐Co LH and the critical influence of morphology and halide substitution on their electrochemical performance.
{"title":"Enhancing the Supercapacitive Behaviour of Cobalt Layered Hydroxides by 3D Structuring and Halide Substitution","authors":"Álvaro Seijas Da Silva, Víctor Oestreicher, Cristián Huck-Iriart, Martín Mizrahi, Diego Hunt, Valeria Ferrari, Gonzalo Abellán","doi":"10.1002/batt.202400335","DOIUrl":"https://doi.org/10.1002/batt.202400335","url":null,"abstract":"Among the two‐dimensional (2D) materials, layered hydroxides (LHs) stand out due to their chemical versatility, allowing the modulation of physicochemical properties on demand. Specifically, LHs based on earth‐abundant elements are promising phases as electrode materials for energy storage. However, these materials exhibit significant drawbacks, such as low conductivity and in‐plane packing that limits electrolyte diffusion. Here, we explored the synthetic flexibility of α‐Co hydroxides to overcome these limitations. We elucidated the growth mechanism of 3D flower‐like α‐Co hydroxyhalides by using in‐situ SAXS experiments combined with thorough physicochemical, structural, and electrochemical characterization. Furthermore, we compared these findings with the most commonly employed Co‐based LHs: β‐Co(OH)2 and CoAl LDHs. While α‐Co LH phases inherently grow as 2D materials, ethanol triggers the formation of 3D‐arrangements of these layers, surpassing their 2D analogues in capacitive behavior. Additionally, by taking advantage of their anion‐dependent bandgap, we demonstrated that substituting halides from chloride to iodide enhances capacitive behavior by > 40%. This finding confirms the role of halides in modulating the electronic properties of LH, as supported by DFT+U calculations. Hence, this work provides fundamental insights into the 3D growth of α‐Co LH and the critical influence of morphology and halide substitution on their electrochemical performance.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sodium-ion batteries present an appealing option for large-scale energy storage applications due to their high natural abundance and low production costs. However, the safety issue remains a major obstacle in current development, primarily owing to the use of liquid electrolytes (LEs), which can lead to leakage and combustion. To achieve both high energy density and enhanced safety, researchers are increasingly focusing on solid-state electrolytes (SSEs). Solid-state polymer electrolytes (SPEs) have garnered notable attention due to their superior mechanical flexibility and electrochemical stability. Nonetheless, traditional SPEs can also undergo combustion and decomposition under extreme conditions due to polymer inherent flammability. Therefore, it is imperative to conduct research and design flame-retardant SPEs in order to enhance their reliability and safety in practical applications. This review provides a comprehensive overview of the mechanisms underlying battery thermal runaway and offers guidance for designing batteries with enhanced safety. In addition to reviewing recent advancements in flame-retardant polymer solid-state sodium battery research, it also presents a systematic classification and introduction of studies on high-safety polymer electrolytes. Furthermore, it delves into diverse perspectives and approaches towards addressing the issue of safety in polymer sodium battery, ultimately outlining future research directions for this particular field.
{"title":"Flame-Retardant Polymer Electrolyte for Sodium-Ion Batteries","authors":"Huiting Yang, Wenyue Tian, Xuchun Chen, Zhaopeng Li, Pei Liu, Qinlun Wang, Xinming Nie, Qinghong Wang, Lifang Jiao","doi":"10.1002/batt.202400383","DOIUrl":"https://doi.org/10.1002/batt.202400383","url":null,"abstract":"Sodium-ion batteries present an appealing option for large-scale energy storage applications due to their high natural abundance and low production costs. However, the safety issue remains a major obstacle in current development, primarily owing to the use of liquid electrolytes (LEs), which can lead to leakage and combustion. To achieve both high energy density and enhanced safety, researchers are increasingly focusing on solid-state electrolytes (SSEs). Solid-state polymer electrolytes (SPEs) have garnered notable attention due to their superior mechanical flexibility and electrochemical stability. Nonetheless, traditional SPEs can also undergo combustion and decomposition under extreme conditions due to polymer inherent flammability. Therefore, it is imperative to conduct research and design flame-retardant SPEs in order to enhance their reliability and safety in practical applications. This review provides a comprehensive overview of the mechanisms underlying battery thermal runaway and offers guidance for designing batteries with enhanced safety. In addition to reviewing recent advancements in flame-retardant polymer solid-state sodium battery research, it also presents a systematic classification and introduction of studies on high-safety polymer electrolytes. Furthermore, it delves into diverse perspectives and approaches towards addressing the issue of safety in polymer sodium battery, ultimately outlining future research directions for this particular field.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebastian Klick, Karl Martin Graff, Gereon Stahl, Egbert Figgemeier, Dirk Uwe Sauer
The SEI is a crucial yet little understood component of lithium‐ion batteries. The specific formation processes creating the SEI are still a matter of current research. In our paper, we analyse the electrochemical processes by incremental capacity analysis (ICA) and correlate these results with the evolved gas species and subsequent performance of the cells. 101 cells in total divided in three groups with different electrolytes performed a formation cycle. Afterwards gas‐samples of half of the cells were extracted for analysis. We found a good correlation between variations of gas composition and noticeable ICA‐data. Furthermore we explore correlations between formation and initial cell performance after a total of 10 cycles. Our results open new possibilities for a better understanding of formation processes.
SEI 是锂离子电池的重要组成部分，但人们对其了解甚少。产生 SEI 的具体形成过程仍是当前的研究课题。在本文中，我们通过增量容量分析（ICA）对电化学过程进行了分析，并将这些结果与演化出的气体种类和电池的后续性能联系起来。总共 101 个电池分为三组，使用不同的电解质进行了一次形成循环。之后，我们提取了一半电池的气体样本进行分析。我们发现气体成分的变化与明显的 ICA 数据之间存在良好的相关性。此外，我们还探索了 10 个循环后电池形成与初始性能之间的相关性。我们的研究结果为更好地了解形成过程提供了新的可能性。
{"title":"Statistical Analysis of Solid Electrolyte Interface Formation: Correlation of Gas Composition, Electrochemical Data and Performance","authors":"Sebastian Klick, Karl Martin Graff, Gereon Stahl, Egbert Figgemeier, Dirk Uwe Sauer","doi":"10.1002/batt.202400291","DOIUrl":"https://doi.org/10.1002/batt.202400291","url":null,"abstract":"The SEI is a crucial yet little understood component of lithium‐ion batteries. The specific formation processes creating the SEI are still a matter of current research. In our paper, we analyse the electrochemical processes by incremental capacity analysis (ICA) and correlate these results with the evolved gas species and subsequent performance of the cells. 101 cells in total divided in three groups with different electrolytes performed a formation cycle. Afterwards gas‐samples of half of the cells were extracted for analysis. We found a good correlation between variations of gas composition and noticeable ICA‐data. Furthermore we explore correlations between formation and initial cell performance after a total of 10 cycles. Our results open new possibilities for a better understanding of formation processes.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria Arnaiz, Paulo Luis, Silvia Martin-Fuentes, Jon Ajuria
Electrode manufacturing for electrochemical energy storage technologies often relies on hazardous fluorine‐containing compounds and toxic organic solvents. To align with sustainability goals and reduce costs, there is a pressing need for water‐processable alternatives. These alternatives can halve electrode processing costs and ease regulatory burdens. While progress has been made with water‐processed graphite electrodes using eco‐friendly binders, challenges persist for high‐mass loading activated carbon (AC) electrodes. This study investigates the impact of modified aluminium current collectors on water‐processed AC electrodes, focusing on compatibility, processability, and electrochemical performance. Various aluminium foils, including etched and carbon‐coated types, were evaluated. The results show that modifications at the interface significantly improve the wetting properties and mechanical stability. Electrochemical tests revealed that carbon‐coated aluminium provided the lowest internal resistance and highest rate capability due to intimate contact between the electrode components. In contrast, etched aluminium foil exhibited higher contact resistance and poorer performance. Ageing studies demonstrated that carbon‐coated foils maintained better electrochemical performance over time, as the carbon layer reduced degradation reactions and contact resistance. These findings suggest that uniformly carbon‐coated aluminium current collectors are the optimal choice for high‐power electrochemical capacitors, balancing performance, sustainability, and cost‐efficiency.
{"title":"On the Selection of the Current Collector for Water Processed Activated Carbon Electrodes for their Application in Electrochemical Capacitors","authors":"Maria Arnaiz, Paulo Luis, Silvia Martin-Fuentes, Jon Ajuria","doi":"10.1002/batt.202400405","DOIUrl":"https://doi.org/10.1002/batt.202400405","url":null,"abstract":"Electrode manufacturing for electrochemical energy storage technologies often relies on hazardous fluorine‐containing compounds and toxic organic solvents. To align with sustainability goals and reduce costs, there is a pressing need for water‐processable alternatives. These alternatives can halve electrode processing costs and ease regulatory burdens. While progress has been made with water‐processed graphite electrodes using eco‐friendly binders, challenges persist for high‐mass loading activated carbon (AC) electrodes. This study investigates the impact of modified aluminium current collectors on water‐processed AC electrodes, focusing on compatibility, processability, and electrochemical performance. Various aluminium foils, including etched and carbon‐coated types, were evaluated. The results show that modifications at the interface significantly improve the wetting properties and mechanical stability. Electrochemical tests revealed that carbon‐coated aluminium provided the lowest internal resistance and highest rate capability due to intimate contact between the electrode components. In contrast, etched aluminium foil exhibited higher contact resistance and poorer performance. Ageing studies demonstrated that carbon‐coated foils maintained better electrochemical performance over time, as the carbon layer reduced degradation reactions and contact resistance. These findings suggest that uniformly carbon‐coated aluminium current collectors are the optimal choice for high‐power electrochemical capacitors, balancing performance, sustainability, and cost‐efficiency.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nina Kosova, Kseniya V. Mishchenko, Pavel Yu. Tyapkin, Arseny B. Slobodyuk, Maria A. Kirsanova
Disordered high entropy spinels (HES) (Cr,Fe,Mn,Co,Ni)3O4 were obtained by solid‐state synthesis and co‐precipitation using various powder precursors. They were characterized by a complex of physico‐chemical methods and investigated as anode materials for lithium‐ion batteries (LIBs). According to XRD and TEM data, the materials are single‐phase. The structural characterization of the samples obtained at 773, 973, and 1273 K was determined using Raman and Mössbauer spectroscopy, and magnetic measurements. The degree of spinel inversion and lattice distortion (microstrains) decrease with increasing synthesis temperature, while the crystallite size increases. The insufficient nickel content in the samples ensures a more uniform distribution of iron cations in both sublattices, which leads to an increase in the lattice parameters and has a positive effect on the de‐/lithiation. Repeated ball‐milling of HES material, prepared by co‐precipitation, increases its specific capacity from 284 mAh·g‐1 to 492 mAh·g‐1 at a current density of 100 mA·g‐1 after 25 cycles. Besides, the smaller crystallite size reduces the volume changes in the materials during de‐/lithiation.
{"title":"Effect of Synthesis Conditions on the Composition, Local Structure and Electrochemical Behavior of (Cr,Fe,Mn,Co,Ni)3O4 Anode Material","authors":"Nina Kosova, Kseniya V. Mishchenko, Pavel Yu. Tyapkin, Arseny B. Slobodyuk, Maria A. Kirsanova","doi":"10.1002/batt.202400350","DOIUrl":"https://doi.org/10.1002/batt.202400350","url":null,"abstract":"Disordered high entropy spinels (HES) (Cr,Fe,Mn,Co,Ni)3O4 were obtained by solid‐state synthesis and co‐precipitation using various powder precursors. They were characterized by a complex of physico‐chemical methods and investigated as anode materials for lithium‐ion batteries (LIBs). According to XRD and TEM data, the materials are single‐phase. The structural characterization of the samples obtained at 773, 973, and 1273 K was determined using Raman and Mössbauer spectroscopy, and magnetic measurements. The degree of spinel inversion and lattice distortion (microstrains) decrease with increasing synthesis temperature, while the crystallite size increases. The insufficient nickel content in the samples ensures a more uniform distribution of iron cations in both sublattices, which leads to an increase in the lattice parameters and has a positive effect on the de‐/lithiation. Repeated ball‐milling of HES material, prepared by co‐precipitation, increases its specific capacity from 284 mAh·g‐1 to 492 mAh·g‐1 at a current density of 100 mA·g‐1 after 25 cycles. Besides, the smaller crystallite size reduces the volume changes in the materials during de‐/lithiation.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
All‐solid‐state lithium metal batteries have reshaped emerging safe battery technologies. However, their low metal ion transport and unstable electrode electrolyte interface make their mass production a huge question. To bridge the emerging solid state and traditional liquid electrolytes, we focus on Quasi‐Composite Polymer electrolytes (QCPE). Herein, we develop QCPE with active 3D alumino‐silicate zeolitic ion conduction pathways embedded in a polymer matrix using two techniques‐ solution casting and electrospinning. Electrospun QCPE outperforms Solution cast QCPE by achieving high amorphous behavior. Prompt elimination of solvent during electrospinning decreases bulk resistance and increases its ionic conductivity. The Zeolitic pathway anchored by hydroxyl groups of PVA polymer acts as highway for Li+ ions. It exhibits highly stable platting stripping vs Li+/Li for 450 hrs with low overpotential thereby confirming the interfacial compatibility and dendrite‐free cycling at lithium metal anode. Controlled lithium‐ion nucleation regulated by evenly distributed zeolitic pathway is an interesting front of this work. To test QCPE’s performance in Lithium metal battery (LMB), the electrospun QCPE is used to fabricate LMB with LiFePO4 cathode. This battery system delivered a high capacity of 155 mAh g‐1 at 0.1C. In addition to the high performance, electrospun QCPE production is scalable at an industrial scale.
{"title":"Electrospun Quasi‐Composite Polymer Electrolyte with Hydoxyl‐ anchored Aluminosilicate Zeolitic Network for Dendrite Free Lithium Metal Batteries","authors":"Jenny Johnson, Sajan Raj Sasirajan Littleflower, Kumaran Vediappan, Helen Annal Therese","doi":"10.1002/batt.202400299","DOIUrl":"https://doi.org/10.1002/batt.202400299","url":null,"abstract":"All‐solid‐state lithium metal batteries have reshaped emerging safe battery technologies. However, their low metal ion transport and unstable electrode electrolyte interface make their mass production a huge question. To bridge the emerging solid state and traditional liquid electrolytes, we focus on Quasi‐Composite Polymer electrolytes (QCPE). Herein, we develop QCPE with active 3D alumino‐silicate zeolitic ion conduction pathways embedded in a polymer matrix using two techniques‐ solution casting and electrospinning. Electrospun QCPE outperforms Solution cast QCPE by achieving high amorphous behavior. Prompt elimination of solvent during electrospinning decreases bulk resistance and increases its ionic conductivity. The Zeolitic pathway anchored by hydroxyl groups of PVA polymer acts as highway for Li+ ions. It exhibits highly stable platting stripping vs Li+/Li for 450 hrs with low overpotential thereby confirming the interfacial compatibility and dendrite‐free cycling at lithium metal anode. Controlled lithium‐ion nucleation regulated by evenly distributed zeolitic pathway is an interesting front of this work. To test QCPE’s performance in Lithium metal battery (LMB), the electrospun QCPE is used to fabricate LMB with LiFePO4 cathode. This battery system delivered a high capacity of 155 mAh g‐1 at 0.1C. In addition to the high performance, electrospun QCPE production is scalable at an industrial scale.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The magnesium‐air (Mg‐air) batteries are regarded as a highly promising system for electrochemical energy conversion and storage, owing to exceptional energy density, notable safety and eco‐friendliness. The development of high‐performance and durable non‐noble metal catalysts for the cathodic oxygen reduction reaction (ORR) is crucial for advancing the practical use of Mg‐air batteries. The synergistic interaction between different metals in bimetallic catalysts is an effective strategy for enhancing the activity and stability of the catalysts. Herein, various prussian blue analogues (PBA) were selected as precursors to synthesis the bimetallic CoNi@NC, monometallic Co@NC and Ni@NC catalysts due to tunable chemical compositions. Compared with Co@NC and Ni@NC, the bimetallic CoNi@NC pyrolyzed at 600°C (CoNi@NC‐600) exhibits outstanding ORR performances and stability in alkaline (0.1 M KOH) and neutral (3.5 wt% NaCl) electrolytes. Following 5000 CV cycles, the half‐wave potentials for CoNi@NC‐600 show only minor negative shifts of 8 and 7 mV, respectively. Meanwhile, the CoNi@NC‐600 possesses the similar ORR reaction mechanism and activity with Pt/C. The primary Mg‐air battery assembled with CoNi@NC‐600 displays better discharge performances than that of Co@NC and Ni@NC. This study lays the foundation for future investigations into the advancement of non‐precious bimetallic catalysts for ORR in Mg‐air batteries.
{"title":"Prussian Blue Analogues Derived Bimetallic CoNi@NC as Efficient Oxygen Reduction Reaction Catalyst for Mg‐Air Batteries","authors":"Xiaoyang Dong, Jinxing Wang, Junqian Ling, Ying Zhang, Junyao Xu, Wen Zeng, Guangsheng Huang, Jingfeng Wang, Fusheng Pan","doi":"10.1002/batt.202400418","DOIUrl":"https://doi.org/10.1002/batt.202400418","url":null,"abstract":"The magnesium‐air (Mg‐air) batteries are regarded as a highly promising system for electrochemical energy conversion and storage, owing to exceptional energy density, notable safety and eco‐friendliness. The development of high‐performance and durable non‐noble metal catalysts for the cathodic oxygen reduction reaction (ORR) is crucial for advancing the practical use of Mg‐air batteries. The synergistic interaction between different metals in bimetallic catalysts is an effective strategy for enhancing the activity and stability of the catalysts. Herein, various prussian blue analogues (PBA) were selected as precursors to synthesis the bimetallic CoNi@NC, monometallic Co@NC and Ni@NC catalysts due to tunable chemical compositions. Compared with Co@NC and Ni@NC, the bimetallic CoNi@NC pyrolyzed at 600°C (CoNi@NC‐600) exhibits outstanding ORR performances and stability in alkaline (0.1 M KOH) and neutral (3.5 wt% NaCl) electrolytes. Following 5000 CV cycles, the half‐wave potentials for CoNi@NC‐600 show only minor negative shifts of 8 and 7 mV, respectively. Meanwhile, the CoNi@NC‐600 possesses the similar ORR reaction mechanism and activity with Pt/C. The primary Mg‐air battery assembled with CoNi@NC‐600 displays better discharge performances than that of Co@NC and Ni@NC. This study lays the foundation for future investigations into the advancement of non‐precious bimetallic catalysts for ORR in Mg‐air batteries.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The pursuit of excellent electrochemical performance, nonflammability and environmental friendliness of aqueous batteries and supercapacitors has driven efforts to find high‐energy yet reliable electrode materials and electrolyte solutions. Here, all colloidal supercapattery are developed using high‐concentration "water‐in‐salt" electrolytes (LiTFSI‐KOH) and pseudocapacitive colloid@carbon cloth as both positive and negative electrodes, which showed merits of batteries and supercapacitors. Ni/Co‐colloid @carbon cloth positive and Fe‐colloid @carbon cloth negative electrodes can be synthesized by in situ electrochemical reaction. The maximum operating voltage of an aqueous colloidal supercapattery is 1.8 V, and the energy density can reach 73.98 Wh kg−1 at a power density of 1799.5 W kg‐1. The specific capacitance of the aqueous colloidal supercapattery still maintains 74.3% of the initial after 2000 cycles of charge/discharge measurement. The combination of quasi ion colloidal materials and "water‐in‐salt" electrolyte pave a profound way to achieve high energy and power ability simultaneously at the supercapattery device.
{"title":"All colloidal supercapattery: colloid@carbon cloth electrodes meet \"water‐in‐salt\" electrolyte","authors":"Xiangfei Sun, Kunfeng Chen, Dongfeng Xue","doi":"10.1002/batt.202400380","DOIUrl":"https://doi.org/10.1002/batt.202400380","url":null,"abstract":"The pursuit of excellent electrochemical performance, nonflammability and environmental friendliness of aqueous batteries and supercapacitors has driven efforts to find high‐energy yet reliable electrode materials and electrolyte solutions. Here, all colloidal supercapattery are developed using high‐concentration \"water‐in‐salt\" electrolytes (LiTFSI‐KOH) and pseudocapacitive colloid@carbon cloth as both positive and negative electrodes, which showed merits of batteries and supercapacitors. Ni/Co‐colloid @carbon cloth positive and Fe‐colloid @carbon cloth negative electrodes can be synthesized by in situ electrochemical reaction. The maximum operating voltage of an aqueous colloidal supercapattery is 1.8 V, and the energy density can reach 73.98 Wh kg−1 at a power density of 1799.5 W kg‐1. The specific capacitance of the aqueous colloidal supercapattery still maintains 74.3% of the initial after 2000 cycles of charge/discharge measurement. The combination of quasi ion colloidal materials and \"water‐in‐salt\" electrolyte pave a profound way to achieve high energy and power ability simultaneously at the supercapattery device.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tzu-Hao Lu, Qiyu Liu, Jinjun He, Hao Liu, Yanxia Yu, Yi Wang, Xihong Lu
Aqueous ammonium‐ion batteries (AAIBs) have received tremendous attention as a potential energy technology, but their development is severely challenged by the fact that the as‐reported electrode materials are usually unable to meet the requirements of high capacity and high stability simultaneously. Herein, an organic‐inorganic hybrid material of ethanediamine (EDA) intercalated vanadium oxide (VO‐EDA) is synthesized as a high‐performance anode material for AAIBs. The intercalated EDA molecules not only act as an electron donor to bind with NH4+, but also form hydrogen bonding network structures with vanadium oxides to facilitate charge/ion transfer. As a result, this hybrid material provides a high specific capacity of 104.4 mAh g−1 at 0.5 A g−1 and good cycling stability after 5000 cycles 10 A g−1 with a coulombic efficiency of ~100%. Moreover, the ammonium‐ion full cell based on VO‐EDA anode and NiHCF cathode achieves a specific capacity of 55 mAh g−1 at 0.1 A g−1 and impressive cycling stability with 88.6% capacity retention after 10000 cycles at 5 A g−1.
作为一种潜在的能源技术，水铵离子电池（AAIBs）受到了极大的关注，但由于目前报道的电极材料通常无法同时满足高容量和高稳定性的要求，其发展受到了严峻的挑战。本文合成了一种乙二胺（EDA）插层氧化钒（VO-EDA）有机无机杂化材料，作为 AAIBs 的高性能阳极材料。插层乙二胺分子不仅可以作为电子供体与 NH4+ 结合，还能与氧化钒形成氢键网络结构，促进电荷/离子转移。因此，这种混合材料在 0.5 A g-1 条件下具有 104.4 mAh g-1 的高比容量，在 10 A g-1 条件下循环 5000 次后具有良好的循环稳定性，库仑效率约为 100%。此外，基于 VO-EDA 阳极和 NiHCF 阴极的铵离子全电池在 0.1 A g-1 电流条件下的比容量为 55 mAh g-1，在 5 A g-1 电流条件下循环 10000 次后的容量保持率为 88.6%，循环稳定性令人印象深刻。
{"title":"Ethanediamine Intercalation Induced Hydrogen Bond Network in Vanadium Oxide for Ultralong‐Life Aqueous Ammonium Ion Batteries","authors":"Tzu-Hao Lu, Qiyu Liu, Jinjun He, Hao Liu, Yanxia Yu, Yi Wang, Xihong Lu","doi":"10.1002/batt.202400426","DOIUrl":"https://doi.org/10.1002/batt.202400426","url":null,"abstract":"Aqueous ammonium‐ion batteries (AAIBs) have received tremendous attention as a potential energy technology, but their development is severely challenged by the fact that the as‐reported electrode materials are usually unable to meet the requirements of high capacity and high stability simultaneously. Herein, an organic‐inorganic hybrid material of ethanediamine (EDA) intercalated vanadium oxide (VO‐EDA) is synthesized as a high‐performance anode material for AAIBs. The intercalated EDA molecules not only act as an electron donor to bind with NH4+, but also form hydrogen bonding network structures with vanadium oxides to facilitate charge/ion transfer. As a result, this hybrid material provides a high specific capacity of 104.4 mAh g−1 at 0.5 A g−1 and good cycling stability after 5000 cycles 10 A g−1 with a coulombic efficiency of ~100%. Moreover, the ammonium‐ion full cell based on VO‐EDA anode and NiHCF cathode achieves a specific capacity of 55 mAh g−1 at 0.1 A g−1 and impressive cycling stability with 88.6% capacity retention after 10000 cycles at 5 A g−1.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：