Seonyong Cho, Hwisu Jung, Mihui Park, Lulu Lyu and Yong-Mook Kang*,
{"title":"调节空气阴极的配置以实现锂-O2 电池的扩展三相边界","authors":"Seonyong Cho, Hwisu Jung, Mihui Park, Lulu Lyu and Yong-Mook Kang*, ","doi":"10.1021/acsenergylett.4c01166","DOIUrl":null,"url":null,"abstract":"<p >Li-O<sub>2</sub> batteries (LOBs), with their high theoretical energy density, are seen as the prime candidates for post-lithium-ion battery development to address the increasing energy demand. The performance of LOBs is primarily determined by the formation and decomposition behavior of their discharge product, lithium peroxide (Li<sub>2</sub>O<sub>2</sub>), formed at the triple-phase boundary (TPB) among Li<sup>+</sup>, e<sup>–</sup>, and O<sub>2</sub>. Traditional electrodes, however, have a limited TPB area, which restricts Li<sub>2</sub>O<sub>2</sub> generation and lowers the energy density. In this study, a unique dual-sided electrode configuration, designed to extend the TPB, was suggested. By applying an active material slurry on both sides of the gas diffusion layer, this configuration enhances mass transfer and facilitates the nucleation/decomposition of Li<sub>2</sub>O<sub>2</sub>. Such improvements lead to increased capacity and better cyclic reversibility, effectively addressing the trade-off between capacity and efficiency. These findings highlight the crucial role of an extended TPB in boosting the reversibility and energy density of LOBs.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":null,"pages":null},"PeriodicalIF":19.3000,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modulating the Configuration of Air Cathodes toward the Extended Triple-Phase Boundaries of Li-O2 Batteries\",\"authors\":\"Seonyong Cho, Hwisu Jung, Mihui Park, Lulu Lyu and Yong-Mook Kang*, \",\"doi\":\"10.1021/acsenergylett.4c01166\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Li-O<sub>2</sub> batteries (LOBs), with their high theoretical energy density, are seen as the prime candidates for post-lithium-ion battery development to address the increasing energy demand. The performance of LOBs is primarily determined by the formation and decomposition behavior of their discharge product, lithium peroxide (Li<sub>2</sub>O<sub>2</sub>), formed at the triple-phase boundary (TPB) among Li<sup>+</sup>, e<sup>–</sup>, and O<sub>2</sub>. Traditional electrodes, however, have a limited TPB area, which restricts Li<sub>2</sub>O<sub>2</sub> generation and lowers the energy density. In this study, a unique dual-sided electrode configuration, designed to extend the TPB, was suggested. By applying an active material slurry on both sides of the gas diffusion layer, this configuration enhances mass transfer and facilitates the nucleation/decomposition of Li<sub>2</sub>O<sub>2</sub>. Such improvements lead to increased capacity and better cyclic reversibility, effectively addressing the trade-off between capacity and efficiency. These findings highlight the crucial role of an extended TPB in boosting the reversibility and energy density of LOBs.</p>\",\"PeriodicalId\":16,\"journal\":{\"name\":\"ACS Energy Letters \",\"volume\":null,\"pages\":null},\"PeriodicalIF\":19.3000,\"publicationDate\":\"2024-05-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Energy Letters \",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsenergylett.4c01166\",\"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":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsenergylett.4c01166","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}
Modulating the Configuration of Air Cathodes toward the Extended Triple-Phase Boundaries of Li-O2 Batteries
Li-O2 batteries (LOBs), with their high theoretical energy density, are seen as the prime candidates for post-lithium-ion battery development to address the increasing energy demand. The performance of LOBs is primarily determined by the formation and decomposition behavior of their discharge product, lithium peroxide (Li2O2), formed at the triple-phase boundary (TPB) among Li+, e–, and O2. Traditional electrodes, however, have a limited TPB area, which restricts Li2O2 generation and lowers the energy density. In this study, a unique dual-sided electrode configuration, designed to extend the TPB, was suggested. By applying an active material slurry on both sides of the gas diffusion layer, this configuration enhances mass transfer and facilitates the nucleation/decomposition of Li2O2. Such improvements lead to increased capacity and better cyclic reversibility, effectively addressing the trade-off between capacity and efficiency. These findings highlight the crucial role of an extended TPB in boosting the reversibility and energy density of LOBs.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.