{"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}
引用次数: 0
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+ 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.