{"title":"用于超稳定锌电极的具有可调水活性和氢键网络的水凝胶电解质","authors":"Hao Tian, Meng Yao, Yi Guo, Ziyang Wang, Dinghao Xu, Wei Pan, Qianyu Zhang","doi":"10.1002/aenm.202403683","DOIUrl":null,"url":null,"abstract":"Quasi-solid-state zinc-ion batteries (QZIBs) have attracted wide attention due to their excellent dimensional stability and high safety. However, poor ion conduction capabilities, severe dendrite growth, and rampant side reactions still hinder their commercialization. The regulation of the solvation structure of Zn<sup>2+</sup> is considered to be an effective method to address these issues. Herein, a hydrogel electrolyte with a regulated solvation structure (HE-RS) is designed via the combination of tetramethyl urea (TMU) additive and polyvinyl alcohol (PVA) matrix. The hydrophilic ─C═O group of TMU exhibits strong affinity with the PVA chains, improving the mechanical strength of the PVA matrix. The ─N(CH<sub>3</sub>)<sub>2</sub> groups at both ends of TMU exhibit strong hydrophobic characteristics, which leads to local hydrophobicity and decreased water activity. Additionally, abundant oxygen-containing (electronegative) groups on both PVA and TUM can adsorb Zn<sup>2+</sup> and provide sites for Zn<sup>2+</sup> transference. Benefiting from these merits, Zn<sup>2+</sup> solvation structure and deposition behavior are regulated. Consequently, the Zn||Zn symmetric cell with HE-RS exhibits a stable cycling life exceeding 2000 h. Moreover, the HE-RS-based Zn||NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> cell exhibits a capacity retention of 96.4% after 1000 cycles at 2 A g<sup>−1</sup>.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":null,"pages":null},"PeriodicalIF":24.4000,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra-Stable Zinc Electrode\",\"authors\":\"Hao Tian, Meng Yao, Yi Guo, Ziyang Wang, Dinghao Xu, Wei Pan, Qianyu Zhang\",\"doi\":\"10.1002/aenm.202403683\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Quasi-solid-state zinc-ion batteries (QZIBs) have attracted wide attention due to their excellent dimensional stability and high safety. However, poor ion conduction capabilities, severe dendrite growth, and rampant side reactions still hinder their commercialization. The regulation of the solvation structure of Zn<sup>2+</sup> is considered to be an effective method to address these issues. Herein, a hydrogel electrolyte with a regulated solvation structure (HE-RS) is designed via the combination of tetramethyl urea (TMU) additive and polyvinyl alcohol (PVA) matrix. The hydrophilic ─C═O group of TMU exhibits strong affinity with the PVA chains, improving the mechanical strength of the PVA matrix. The ─N(CH<sub>3</sub>)<sub>2</sub> groups at both ends of TMU exhibit strong hydrophobic characteristics, which leads to local hydrophobicity and decreased water activity. Additionally, abundant oxygen-containing (electronegative) groups on both PVA and TUM can adsorb Zn<sup>2+</sup> and provide sites for Zn<sup>2+</sup> transference. Benefiting from these merits, Zn<sup>2+</sup> solvation structure and deposition behavior are regulated. Consequently, the Zn||Zn symmetric cell with HE-RS exhibits a stable cycling life exceeding 2000 h. Moreover, the HE-RS-based Zn||NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> cell exhibits a capacity retention of 96.4% after 1000 cycles at 2 A g<sup>−1</sup>.\",\"PeriodicalId\":111,\"journal\":{\"name\":\"Advanced Energy Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":24.4000,\"publicationDate\":\"2024-10-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Energy Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/aenm.202403683\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/aenm.202403683","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra-Stable Zinc Electrode
Quasi-solid-state zinc-ion batteries (QZIBs) have attracted wide attention due to their excellent dimensional stability and high safety. However, poor ion conduction capabilities, severe dendrite growth, and rampant side reactions still hinder their commercialization. The regulation of the solvation structure of Zn2+ is considered to be an effective method to address these issues. Herein, a hydrogel electrolyte with a regulated solvation structure (HE-RS) is designed via the combination of tetramethyl urea (TMU) additive and polyvinyl alcohol (PVA) matrix. The hydrophilic ─C═O group of TMU exhibits strong affinity with the PVA chains, improving the mechanical strength of the PVA matrix. The ─N(CH3)2 groups at both ends of TMU exhibit strong hydrophobic characteristics, which leads to local hydrophobicity and decreased water activity. Additionally, abundant oxygen-containing (electronegative) groups on both PVA and TUM can adsorb Zn2+ and provide sites for Zn2+ transference. Benefiting from these merits, Zn2+ solvation structure and deposition behavior are regulated. Consequently, the Zn||Zn symmetric cell with HE-RS exhibits a stable cycling life exceeding 2000 h. Moreover, the HE-RS-based Zn||NH4V4O10 cell exhibits a capacity retention of 96.4% after 1000 cycles at 2 A g−1.
期刊介绍:
Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small.
With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics.
The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.