{"title":"同时调节高性能防冻n型液体热电池的溶剂化和水结构","authors":"Qiangqiang Huang, Yuchi Chen, Congliang Huang, Ronggui Yang* and Xin Qian*, ","doi":"10.1021/acsmaterialslett.4c0219310.1021/acsmaterialslett.4c02193","DOIUrl":null,"url":null,"abstract":"<p >Emerging ionic thermoelectric (i-TE) modules consisting of <i>p</i>–<i>n</i> liquid thermocell arrays provide compact and cost-effective ways to achieve low-grade heat harvesting. Despite exciting progress in <i>p</i>-type thermocells, high-performance <i>n</i>-type thermocells remain underdeveloped. Here we present an <i>n</i>-type liquid thermocell with a cosolvent antifreezing electrolyte showing enhanced thermopower, record-high efficiency and power density, and the capability to harness both low-grade heat and subfreezing coldness. Acetonitrile is used as the cosolvent molecule with water that can selectively pair with the reduced metal ion only and simultaneously disrupts the water structure. By tailoring these molecular interactions, we achieved a record-high Carnot-relative efficiency of 1.9% among reported <i>n</i>-type thermocells, and a power density of 5.5 W/m<sup>2</sup> at the hot/cold temperatures of 69.8 °C and −19.5 °C, respectively. Our work marks an important advancement in i-TE technology in terms of both molecular insights and the preparation of high-performance <i>n</i>-type liquid thermocells for low-grade heat harvesting.</p>","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":"7 4","pages":"1219–1227 1219–1227"},"PeriodicalIF":9.6000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simultaneously Modulating Solvation and Water Structure for High-Performance Antifreezing n-Type Liquid Thermocells\",\"authors\":\"Qiangqiang Huang, Yuchi Chen, Congliang Huang, Ronggui Yang* and Xin Qian*, \",\"doi\":\"10.1021/acsmaterialslett.4c0219310.1021/acsmaterialslett.4c02193\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Emerging ionic thermoelectric (i-TE) modules consisting of <i>p</i>–<i>n</i> liquid thermocell arrays provide compact and cost-effective ways to achieve low-grade heat harvesting. Despite exciting progress in <i>p</i>-type thermocells, high-performance <i>n</i>-type thermocells remain underdeveloped. Here we present an <i>n</i>-type liquid thermocell with a cosolvent antifreezing electrolyte showing enhanced thermopower, record-high efficiency and power density, and the capability to harness both low-grade heat and subfreezing coldness. Acetonitrile is used as the cosolvent molecule with water that can selectively pair with the reduced metal ion only and simultaneously disrupts the water structure. By tailoring these molecular interactions, we achieved a record-high Carnot-relative efficiency of 1.9% among reported <i>n</i>-type thermocells, and a power density of 5.5 W/m<sup>2</sup> at the hot/cold temperatures of 69.8 °C and −19.5 °C, respectively. Our work marks an important advancement in i-TE technology in terms of both molecular insights and the preparation of high-performance <i>n</i>-type liquid thermocells for low-grade heat harvesting.</p>\",\"PeriodicalId\":19,\"journal\":{\"name\":\"ACS Materials Letters\",\"volume\":\"7 4\",\"pages\":\"1219–1227 1219–1227\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2025-03-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Materials Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c02193\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c02193","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Simultaneously Modulating Solvation and Water Structure for High-Performance Antifreezing n-Type Liquid Thermocells
Emerging ionic thermoelectric (i-TE) modules consisting of p–n liquid thermocell arrays provide compact and cost-effective ways to achieve low-grade heat harvesting. Despite exciting progress in p-type thermocells, high-performance n-type thermocells remain underdeveloped. Here we present an n-type liquid thermocell with a cosolvent antifreezing electrolyte showing enhanced thermopower, record-high efficiency and power density, and the capability to harness both low-grade heat and subfreezing coldness. Acetonitrile is used as the cosolvent molecule with water that can selectively pair with the reduced metal ion only and simultaneously disrupts the water structure. By tailoring these molecular interactions, we achieved a record-high Carnot-relative efficiency of 1.9% among reported n-type thermocells, and a power density of 5.5 W/m2 at the hot/cold temperatures of 69.8 °C and −19.5 °C, respectively. Our work marks an important advancement in i-TE technology in terms of both molecular insights and the preparation of high-performance n-type liquid thermocells for low-grade heat harvesting.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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