{"title":"使用碘化锂活性添加剂的高容量、长寿命全固态锂硒电池","authors":"Huilin Ge, Dulin Huang, Chuannan Geng, Xichen Cui, Qiang Li, Xu Zhang, Chunpeng Yang, Zhen Zhou, Quan-Hong Yang","doi":"10.1002/aenm.202403449","DOIUrl":null,"url":null,"abstract":"Selenium (Se) shows promise as a cathode candidate for all-solid-state lithium (Li) batteries due to its impressive theoretical volumetric energy density, much higher electronic conductivity, and improved safety in comparison to those for sulfur (S). An active cathode additive, lithium iodide (LiI) is demonstrated, to address the major challenge for all-solid-state Li–Se batteries, namely the sluggish redox kinetics resulting from the huge solid-state conversion barrier. The LiI additive enhances Li<sup>+</sup> transport and provides catalytic sites for Se cathode, thus endowing the batteries with accelerated reaction kinetics and extra capacity. DFT calculation and experimental analysis clearly reveal that LiI additive efficiently accelerates the conversion between polyselenide intermediates and Li<sub>2</sub>Se. With the above advantages, the battery with LiI using Li<sub>6</sub>PS<sub>5</sub>Br electrolyte gives an outstanding capacity of 862 mAh g<sub>Se</sub><sup>−1</sup> beyond the theoretical specific capacity of Se and a superlong life over 1800 cycles at 1C under room temperature. This work offers a simple strategy to facilitate the kinetics of all-solid-state Se cathodes and paves the way for the practicality of high-capacity and long-life all-solid-state Li–Se batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":null,"pages":null},"PeriodicalIF":24.4000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-Capacity, Long-Life All-Solid-State Lithium–Selenium Batteries Enabled by Lithium Iodide Active Additive\",\"authors\":\"Huilin Ge, Dulin Huang, Chuannan Geng, Xichen Cui, Qiang Li, Xu Zhang, Chunpeng Yang, Zhen Zhou, Quan-Hong Yang\",\"doi\":\"10.1002/aenm.202403449\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Selenium (Se) shows promise as a cathode candidate for all-solid-state lithium (Li) batteries due to its impressive theoretical volumetric energy density, much higher electronic conductivity, and improved safety in comparison to those for sulfur (S). An active cathode additive, lithium iodide (LiI) is demonstrated, to address the major challenge for all-solid-state Li–Se batteries, namely the sluggish redox kinetics resulting from the huge solid-state conversion barrier. The LiI additive enhances Li<sup>+</sup> transport and provides catalytic sites for Se cathode, thus endowing the batteries with accelerated reaction kinetics and extra capacity. DFT calculation and experimental analysis clearly reveal that LiI additive efficiently accelerates the conversion between polyselenide intermediates and Li<sub>2</sub>Se. With the above advantages, the battery with LiI using Li<sub>6</sub>PS<sub>5</sub>Br electrolyte gives an outstanding capacity of 862 mAh g<sub>Se</sub><sup>−1</sup> beyond the theoretical specific capacity of Se and a superlong life over 1800 cycles at 1C under room temperature. This work offers a simple strategy to facilitate the kinetics of all-solid-state Se cathodes and paves the way for the practicality of high-capacity and long-life all-solid-state Li–Se batteries.\",\"PeriodicalId\":111,\"journal\":{\"name\":\"Advanced Energy Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":24.4000,\"publicationDate\":\"2024-09-17\",\"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.202403449\",\"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.202403449","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}
引用次数: 0
摘要
与硫(S)相比,硒(Se)具有令人印象深刻的理论体积能量密度、更高的电子导电性和更好的安全性,因此有望成为全固态锂(Li)电池的阴极候选材料。我们展示了一种活性正极添加剂--碘化锂(LiI),以解决全固态锂-硒电池面临的主要挑战,即巨大的固态转换障碍导致的缓慢氧化还原动力学。LiI 添加剂增强了 Li+ 的传输,并为硒阴极提供了催化位点,从而加快了电池的反应动力学并提高了电池容量。DFT 计算和实验分析清楚地表明,LiI 添加剂能有效加速多硒化物中间体与 Li2Se 之间的转化。由于上述优点,使用 Li6PS5Br 电解质的 LiI 电池可产生 862 mAh gSe-1 的出色容量,超过了 Se 的理论比容量,并且在室温下 1C 循环 1800 次以上,具有超长寿命。这项工作为促进全固态 Se 阴极的动力学提供了一种简单的策略,并为高容量、长寿命全固态锂-Se 电池的实用化铺平了道路。
High-Capacity, Long-Life All-Solid-State Lithium–Selenium Batteries Enabled by Lithium Iodide Active Additive
Selenium (Se) shows promise as a cathode candidate for all-solid-state lithium (Li) batteries due to its impressive theoretical volumetric energy density, much higher electronic conductivity, and improved safety in comparison to those for sulfur (S). An active cathode additive, lithium iodide (LiI) is demonstrated, to address the major challenge for all-solid-state Li–Se batteries, namely the sluggish redox kinetics resulting from the huge solid-state conversion barrier. The LiI additive enhances Li+ transport and provides catalytic sites for Se cathode, thus endowing the batteries with accelerated reaction kinetics and extra capacity. DFT calculation and experimental analysis clearly reveal that LiI additive efficiently accelerates the conversion between polyselenide intermediates and Li2Se. With the above advantages, the battery with LiI using Li6PS5Br electrolyte gives an outstanding capacity of 862 mAh gSe−1 beyond the theoretical specific capacity of Se and a superlong life over 1800 cycles at 1C under room temperature. This work offers a simple strategy to facilitate the kinetics of all-solid-state Se cathodes and paves the way for the practicality of high-capacity and long-life all-solid-state Li–Se batteries.
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.