Ye Li , Fangfei Li , Kuo Yang , Haiyan Wang , Zhuo Zhang , Bing Xue
{"title":"用于高稳定性锌-离子电池超薄阳极涂层的 Dickite 纳米层","authors":"Ye Li , Fangfei Li , Kuo Yang , Haiyan Wang , Zhuo Zhang , Bing Xue","doi":"10.1016/j.clay.2024.107553","DOIUrl":null,"url":null,"abstract":"<div><p>In aqueous zinc-ion batteries (AZIBs), Zn anode faces issues such as uncontrolled dendrite growth, electrode corrosion, and by-product formation. This study successfully exfoliated a 1:1 type layered clay mineral, dickite, into ultrathin dickite nanolayers (DE) with a layer thickness of less than 5 nm and a yield of over 40 % using an ultrasonic-assisted solvothermal method. These ultrathin dickite nanolayers were mixed with sodium alginate (SA) and coated onto a zinc matrix to obtain a coated Zn electrode (DE-Zn). Due to the abundant hydrophilic groups on the surface of the ultrathin dickite nanolayers, the DE-SA coating exhibited excellent electrolyte affinity. The uniform dispersion of ultrathin dickite nanolayers in the SA matrix constructed a polygonal network structure, providing rapid ion transport channels. The unique surface negative charge characteristics of the ultrathin dickite nanolayers allowed for significant ion selectivity, enhancing Zn<sup>2+</sup> migration efficiency by adsorbing Zn<sup>2+</sup> and repelling SO<sub>4</sub><sup>2−</sup> in the electrolyte. The symmetric cell assembled with DE-Zn electrodes demonstrated stable operation for up to 5500 h at 0.5 mA cm<sup>−2</sup>, with a polarization voltage of 40 mV, and remained stable even at 10 mA cm<sup>−2</sup>. The addition of ultrathin dickite nanolayers to the coating inhibited dendrite growth, HER, and by-product formation, maintaining a stable zinc electrode interface. The DE-Zn//MnO<sub>2</sub> full cell assembled with DE-Zn electrodes maintained a high discharge specific capacity (144 mAh g<sup>−1</sup>) after 750 cycles at 0.15 mA g<sup>−1</sup>, exhibiting excellent electrochemical performance. This work provides new scientific insights for the low-cost, efficient exfoliation of clay minerals and the preparation of high-performance AZIBs.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107553"},"PeriodicalIF":5.3000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dickite nanolayers for ultrathin anode coatings in highly stable zinc-ion batteries\",\"authors\":\"Ye Li , Fangfei Li , Kuo Yang , Haiyan Wang , Zhuo Zhang , Bing Xue\",\"doi\":\"10.1016/j.clay.2024.107553\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In aqueous zinc-ion batteries (AZIBs), Zn anode faces issues such as uncontrolled dendrite growth, electrode corrosion, and by-product formation. This study successfully exfoliated a 1:1 type layered clay mineral, dickite, into ultrathin dickite nanolayers (DE) with a layer thickness of less than 5 nm and a yield of over 40 % using an ultrasonic-assisted solvothermal method. These ultrathin dickite nanolayers were mixed with sodium alginate (SA) and coated onto a zinc matrix to obtain a coated Zn electrode (DE-Zn). Due to the abundant hydrophilic groups on the surface of the ultrathin dickite nanolayers, the DE-SA coating exhibited excellent electrolyte affinity. The uniform dispersion of ultrathin dickite nanolayers in the SA matrix constructed a polygonal network structure, providing rapid ion transport channels. The unique surface negative charge characteristics of the ultrathin dickite nanolayers allowed for significant ion selectivity, enhancing Zn<sup>2+</sup> migration efficiency by adsorbing Zn<sup>2+</sup> and repelling SO<sub>4</sub><sup>2−</sup> in the electrolyte. The symmetric cell assembled with DE-Zn electrodes demonstrated stable operation for up to 5500 h at 0.5 mA cm<sup>−2</sup>, with a polarization voltage of 40 mV, and remained stable even at 10 mA cm<sup>−2</sup>. The addition of ultrathin dickite nanolayers to the coating inhibited dendrite growth, HER, and by-product formation, maintaining a stable zinc electrode interface. The DE-Zn//MnO<sub>2</sub> full cell assembled with DE-Zn electrodes maintained a high discharge specific capacity (144 mAh g<sup>−1</sup>) after 750 cycles at 0.15 mA g<sup>−1</sup>, exhibiting excellent electrochemical performance. This work provides new scientific insights for the low-cost, efficient exfoliation of clay minerals and the preparation of high-performance AZIBs.</p></div>\",\"PeriodicalId\":245,\"journal\":{\"name\":\"Applied Clay Science\",\"volume\":\"261 \",\"pages\":\"Article 107553\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Clay Science\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0169131724003016\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Clay Science","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0169131724003016","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
在水性锌离子电池(AZIBs)中,锌阳极面临着枝晶生长失控、电极腐蚀和副产品形成等问题。本研究采用超声波辅助溶热法,成功地将 1:1 型层状粘土矿物屌石剥离成超薄屌石纳米层(DE),层厚小于 5 纳米,产率超过 40%。将这些超薄屌石纳米层与海藻酸钠(SA)混合并涂覆在锌基体上,就得到了涂覆锌电极(DE-Zn)。由于超薄屌石纳米层表面有大量亲水基团,DE-SA 涂层表现出优异的电解质亲和性。在 SA 基质中均匀分散的超薄屌石纳米层构建了一个多边形网络结构,提供了快速的离子传输通道。超薄屌石纳米层独特的表面负电荷特性可实现显著的离子选择性,通过吸附电解液中的 Zn2+ 和排斥 SO42- 来提高 Zn2+ 迁移效率。使用 DE-Zn 电极组装的对称电池在 0.5 mA cm-2 极化电压为 40 mV 的条件下可稳定运行长达 5500 小时,即使在 10 mA cm-2 的条件下也能保持稳定。涂层中添加的超薄刁石纳米层抑制了枝晶的生长、HER 和副产物的形成,从而保持了稳定的锌电极界面。使用 DE-Zn 电极组装的 DE-Zn//MnO2 全电池在 0.15 mA g-1 的条件下循环 750 次后仍能保持较高的放电比容量(144 mAh g-1),表现出优异的电化学性能。这项工作为低成本、高效地剥离粘土矿物和制备高性能 AZIB 提供了新的科学见解。
Dickite nanolayers for ultrathin anode coatings in highly stable zinc-ion batteries
In aqueous zinc-ion batteries (AZIBs), Zn anode faces issues such as uncontrolled dendrite growth, electrode corrosion, and by-product formation. This study successfully exfoliated a 1:1 type layered clay mineral, dickite, into ultrathin dickite nanolayers (DE) with a layer thickness of less than 5 nm and a yield of over 40 % using an ultrasonic-assisted solvothermal method. These ultrathin dickite nanolayers were mixed with sodium alginate (SA) and coated onto a zinc matrix to obtain a coated Zn electrode (DE-Zn). Due to the abundant hydrophilic groups on the surface of the ultrathin dickite nanolayers, the DE-SA coating exhibited excellent electrolyte affinity. The uniform dispersion of ultrathin dickite nanolayers in the SA matrix constructed a polygonal network structure, providing rapid ion transport channels. The unique surface negative charge characteristics of the ultrathin dickite nanolayers allowed for significant ion selectivity, enhancing Zn2+ migration efficiency by adsorbing Zn2+ and repelling SO42− in the electrolyte. The symmetric cell assembled with DE-Zn electrodes demonstrated stable operation for up to 5500 h at 0.5 mA cm−2, with a polarization voltage of 40 mV, and remained stable even at 10 mA cm−2. The addition of ultrathin dickite nanolayers to the coating inhibited dendrite growth, HER, and by-product formation, maintaining a stable zinc electrode interface. The DE-Zn//MnO2 full cell assembled with DE-Zn electrodes maintained a high discharge specific capacity (144 mAh g−1) after 750 cycles at 0.15 mA g−1, exhibiting excellent electrochemical performance. This work provides new scientific insights for the low-cost, efficient exfoliation of clay minerals and the preparation of high-performance AZIBs.
期刊介绍:
Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as:
• Synthesis and purification
• Structural, crystallographic and mineralogical properties of clays and clay minerals
• Thermal properties of clays and clay minerals
• Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties
• Interaction with water, with polar and apolar molecules
• Colloidal properties and rheology
• Adsorption, Intercalation, Ionic exchange
• Genesis and deposits of clay minerals
• Geology and geochemistry of clays
• Modification of clays and clay minerals properties by thermal and physical treatments
• Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays)
• Modification by biological microorganisms. etc...