Yechao Lin , Yufan Xia , Haosheng Li , Xuan Zhang , Huiling Liu , Youchen Hao , Hongge Pan , Mi Yan , Yinzhu Jiang
{"title":"促进基于 FeOF 正极的插层反应,实现高度可逆的锂存储","authors":"Yechao Lin , Yufan Xia , Haosheng Li , Xuan Zhang , Huiling Liu , Youchen Hao , Hongge Pan , Mi Yan , Yinzhu Jiang","doi":"10.1016/j.nanoen.2024.109944","DOIUrl":null,"url":null,"abstract":"<div><p>FeOF as an intercalation-conversion cathode features a high theoretical capacity toward high energy density lithium-ion batteries (LIBs). However, the inadequate intercalation process and poor reversibility of redox reaction deteriorate its practical capacity and cycling stability. Herein, a S-substitution strategy in FeOF (FeOF-S) is proposed to boost the intercalation reaction and enhance the reaction kinetics, achieving a record-high capacity of 668 mAh g<sup>−1</sup> at 0.05 A g<sup>−1</sup> and a long cycling stability up to 1500 cycles at 0.5 A g<sup>−1</sup>. Under this strategy, the Li<sup>+</sup> intercalation energy of FeOF-S is remarkably reduced in thermodynamics, promoting the intercalation capacity to 230 mAh g<sup>−1</sup> which is 50% higher than that of FeOF. Furthermore, a nearly zero band gap with superior electronic conduction is achieved in FeOF-S, leading to excellent rate capability with much enhanced pseudo-capacitance contribution. This work presents new insights into the regulation of thermodynamics and kinetics toward the boosted electrochemical performance of conversion-type electrodes for high energy density LIBs.</p></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":null,"pages":null},"PeriodicalIF":16.8000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Boosting the intercalation reaction of FeOF-based cathode toward highly reversible lithium storage\",\"authors\":\"Yechao Lin , Yufan Xia , Haosheng Li , Xuan Zhang , Huiling Liu , Youchen Hao , Hongge Pan , Mi Yan , Yinzhu Jiang\",\"doi\":\"10.1016/j.nanoen.2024.109944\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>FeOF as an intercalation-conversion cathode features a high theoretical capacity toward high energy density lithium-ion batteries (LIBs). However, the inadequate intercalation process and poor reversibility of redox reaction deteriorate its practical capacity and cycling stability. Herein, a S-substitution strategy in FeOF (FeOF-S) is proposed to boost the intercalation reaction and enhance the reaction kinetics, achieving a record-high capacity of 668 mAh g<sup>−1</sup> at 0.05 A g<sup>−1</sup> and a long cycling stability up to 1500 cycles at 0.5 A g<sup>−1</sup>. Under this strategy, the Li<sup>+</sup> intercalation energy of FeOF-S is remarkably reduced in thermodynamics, promoting the intercalation capacity to 230 mAh g<sup>−1</sup> which is 50% higher than that of FeOF. Furthermore, a nearly zero band gap with superior electronic conduction is achieved in FeOF-S, leading to excellent rate capability with much enhanced pseudo-capacitance contribution. This work presents new insights into the regulation of thermodynamics and kinetics toward the boosted electrochemical performance of conversion-type electrodes for high energy density LIBs.</p></div>\",\"PeriodicalId\":394,\"journal\":{\"name\":\"Nano Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.8000,\"publicationDate\":\"2024-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Energy\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2211285524006931\",\"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":"Nano Energy","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2211285524006931","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
作为一种插层转换阴极,FeOF 对高能量密度锂离子电池(LIB)具有很高的理论容量。然而,不充分的插层过程和氧化还原反应的可逆性较差,降低了其实际容量和循环稳定性。本文提出了一种在 FeOF(FeOF-S)中进行 S 取代的策略,以促进插层反应并增强反应动力学,在 0.05 A g-1 的条件下实现了 668 mAh g-1 的创纪录高容量,在 0.5 A g-1 的条件下实现了高达 1500 次循环的长循环稳定性。在这种策略下,FeOF-S 的锂+插层能量在热力学上显著降低,使插层容量达到 230 mAh g-1,比 FeOF 高出 50%。此外,FeOF-S 实现了接近零的带隙和卓越的电子传导,从而具有出色的速率能力,并大大提高了伪电容贡献。这项研究就如何调节热力学和动力学以提高高能量密度 LIB 转换型电极的电化学性能提出了新的见解。
Boosting the intercalation reaction of FeOF-based cathode toward highly reversible lithium storage
FeOF as an intercalation-conversion cathode features a high theoretical capacity toward high energy density lithium-ion batteries (LIBs). However, the inadequate intercalation process and poor reversibility of redox reaction deteriorate its practical capacity and cycling stability. Herein, a S-substitution strategy in FeOF (FeOF-S) is proposed to boost the intercalation reaction and enhance the reaction kinetics, achieving a record-high capacity of 668 mAh g−1 at 0.05 A g−1 and a long cycling stability up to 1500 cycles at 0.5 A g−1. Under this strategy, the Li+ intercalation energy of FeOF-S is remarkably reduced in thermodynamics, promoting the intercalation capacity to 230 mAh g−1 which is 50% higher than that of FeOF. Furthermore, a nearly zero band gap with superior electronic conduction is achieved in FeOF-S, leading to excellent rate capability with much enhanced pseudo-capacitance contribution. This work presents new insights into the regulation of thermodynamics and kinetics toward the boosted electrochemical performance of conversion-type electrodes for high energy density LIBs.
期刊介绍:
Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem.
Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.