Reversible Li plating regulation on graphite anode through a barium sulfate nanofibers-based dielectric separator for fast charging and high-safety lithium-ion battery

IF 13.1 1区 化学 Q1 Energy Journal of Energy Chemistry Pub Date : 2024-10-16 DOI:10.1016/j.jechem.2024.08.053
Yaxin Zhang , Long Cheng , Ying-Jie Zhu , Jin Wu , Han-Ping Yu , Sida Xie , Dandan Li , Zhaohui Wang , Heng Li
{"title":"Reversible Li plating regulation on graphite anode through a barium sulfate nanofibers-based dielectric separator for fast charging and high-safety lithium-ion battery","authors":"Yaxin Zhang ,&nbsp;Long Cheng ,&nbsp;Ying-Jie Zhu ,&nbsp;Jin Wu ,&nbsp;Han-Ping Yu ,&nbsp;Sida Xie ,&nbsp;Dandan Li ,&nbsp;Zhaohui Wang ,&nbsp;Heng Li","doi":"10.1016/j.jechem.2024.08.053","DOIUrl":null,"url":null,"abstract":"<div><div>Poor Li plating reversibility and high thermal runaway risks are key challenges for fast charging lithium-ion batteries with graphite anodes. Herein, a dielectric and fire-resistant separator based on hybrid nanofibers of barium sulfate (BS) and bacterial cellulose (BC) is developed to synchronously enhance the battery’s fast charging and thermal-safety performances. The regulation mechanism of the dielectric BS/BC separator in enhancing the Li<sup>+</sup> ion transport and Li plating reversibility is revealed. (1) The Max-Wagner polarization electric field of the dielectric BS/BC separator can accelerate the desolvation of solvated Li<sup>+</sup> ions, enhancing their transport kinetics. (2) Moreover, due to the charge balancing effect, the dielectric BS/BC separator homogenizes the electric field/Li<sup>+</sup> ion flux at the graphite anode-separator interface, facilitating uniform Li plating and suppressing Li dendrite growth. Consequently, the fast-charge graphite anode with the BS/BC separator shows higher Coulombic efficiency (99.0% vs. 96.9%) and longer cycling lifespan (100 cycles vs. 59 cycles) than that with the polypropylene (PP) separator in the constant-lithiation cycling test at 2  mA cm<sup>−2</sup>. The high-loading LiFePO<sub>4</sub> (15.5  mg cm<sup>−2</sup>)//graphite (7.5  mg cm<sup>−2</sup>) full cell with the BS/BC separator exhibits excellent fast charging performance, retaining 70% of its capacity after 500 cycles at a high rate of 2C, which is significantly better than that of the cell with the PP separator (retaining only 27% of its capacity after 500 cycles). More importantly, the thermally stable BS/BC separator effectively elevates the critical temperature and reduces the heat release rate during thermal runaway, thereby significantly enhancing the battery’s safety.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 511-523"},"PeriodicalIF":13.1000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095495624006090","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Energy","Score":null,"Total":0}
引用次数: 0

Abstract

Poor Li plating reversibility and high thermal runaway risks are key challenges for fast charging lithium-ion batteries with graphite anodes. Herein, a dielectric and fire-resistant separator based on hybrid nanofibers of barium sulfate (BS) and bacterial cellulose (BC) is developed to synchronously enhance the battery’s fast charging and thermal-safety performances. The regulation mechanism of the dielectric BS/BC separator in enhancing the Li+ ion transport and Li plating reversibility is revealed. (1) The Max-Wagner polarization electric field of the dielectric BS/BC separator can accelerate the desolvation of solvated Li+ ions, enhancing their transport kinetics. (2) Moreover, due to the charge balancing effect, the dielectric BS/BC separator homogenizes the electric field/Li+ ion flux at the graphite anode-separator interface, facilitating uniform Li plating and suppressing Li dendrite growth. Consequently, the fast-charge graphite anode with the BS/BC separator shows higher Coulombic efficiency (99.0% vs. 96.9%) and longer cycling lifespan (100 cycles vs. 59 cycles) than that with the polypropylene (PP) separator in the constant-lithiation cycling test at 2  mA cm−2. The high-loading LiFePO4 (15.5  mg cm−2)//graphite (7.5  mg cm−2) full cell with the BS/BC separator exhibits excellent fast charging performance, retaining 70% of its capacity after 500 cycles at a high rate of 2C, which is significantly better than that of the cell with the PP separator (retaining only 27% of its capacity after 500 cycles). More importantly, the thermally stable BS/BC separator effectively elevates the critical temperature and reduces the heat release rate during thermal runaway, thereby significantly enhancing the battery’s safety.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
通过基于硫酸钡纳米纤维的电介质隔膜对石墨负极进行可逆锂电镀调节,实现快速充电和高安全性锂离子电池
镀锂可逆性差和热失控风险高是石墨负极快速充电锂离子电池面临的主要挑战。本文开发了一种基于硫酸钡(BS)和细菌纤维素(BC)混合纳米纤维的电介质耐火隔膜,以同步提高电池的快速充电性能和热安全性能。揭示了 BS/BC 介电隔膜在增强锂离子传输和锂电镀可逆性方面的调节机制。(1)电介质 BS/BC 隔离层的 Max-Wagner 极化电场可加速溶解的 Li+ 离子的解溶解,增强其传输动力学。(2) 此外,由于电荷平衡效应,电介质 BS/BC 分离器可使石墨阳极-分离器界面上的电场/Li+ 离子通量均匀化,从而促进锂的均匀电镀并抑制锂枝晶的生长。因此,在 2 mA cm-2 的恒定锂化循环测试中,使用 BS/BC 隔离层的快充石墨阳极比使用聚丙烯(PP)隔离层的阳极具有更高的库仑效率(99.0% 对 96.9%)和更长的循环寿命(100 次对 59 次)。使用 BS/BC 隔膜的高负载磷酸铁锂(15.5 毫克/厘米-2)/石墨(7.5 毫克/厘米-2)全电池具有出色的快速充电性能,在 2C 的高倍率下循环 500 次后仍能保持 70% 的容量,明显优于使用 PP 隔膜的电池(循环 500 次后仅能保持 27% 的容量)。更重要的是,热稳定的 BS/BC 隔膜有效地提高了临界温度,降低了热失控时的热释放率,从而大大提高了电池的安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of Energy Chemistry
Journal of Energy Chemistry CHEMISTRY, APPLIED-CHEMISTRY, PHYSICAL
CiteScore
19.10
自引率
8.40%
发文量
3631
审稿时长
15 days
期刊介绍: The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies. This journal focuses on original research papers covering various topics within energy chemistry worldwide, including: Optimized utilization of fossil energy Hydrogen energy Conversion and storage of electrochemical energy Capture, storage, and chemical conversion of carbon dioxide Materials and nanotechnologies for energy conversion and storage Chemistry in biomass conversion Chemistry in the utilization of solar energy
期刊最新文献
Catalytic production of high-energy-density spiro polycyclic jet fuel with biomass derivatives Metallized polymer current collector as “stress acceptor” for stable micron-sized silicon anodes Microdynamic modulation through Pt–O–Ni proton and electron “superhighway” for pH-universal hydrogen evolution High-areal-capacity and long-life sulfide-based all-solid-state lithium battery achieved by regulating surface-to-bulk oxygen activity Introducing strong metal–oxygen bonds to suppress the Jahn-Teller effect and enhance the structural stability of Ni/Co-free Mn-based layered oxide cathodes for potassium-ion batteries
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1