He Zhang, Meijia Qiu, Yuxuan Liang, Jinguo Chen, Yongtao Liu, Xiong Pu, Wenjie Mai, Peng Sun
{"title":"Robust cellulose-BaTiO3 separator with electric-field regulation effect for dendrite-free Zn-ion batteries","authors":"He Zhang, Meijia Qiu, Yuxuan Liang, Jinguo Chen, Yongtao Liu, Xiong Pu, Wenjie Mai, Peng Sun","doi":"10.1063/5.0214281","DOIUrl":null,"url":null,"abstract":"Aqueous Zn-ion batteries have emerged as one of the best candidates for efficient and safe energy storage systems; however, they are severely restricted by the formation of uncontrolled Zn dendrites. To address this issue, micro-fibrillated cellulose (MFC)-BaTiO3 separators are designed to regulate the Zn2+ transport behavior and achieve stable Zn anodes via coupling multiple effects. The MFC component offers a cellulose framework with robust mechanical properties and prior ion transfer channels, while the BaTiO3 particles provide dynamic electric-field regulation toward Zn2+ transfer process under different states. Due to the above-mentioned co-functions, MFC-BaTiO3 separators deliver a much better comprehensive performance than the commercial glass fiber (GF) separator. A higher Zn2+ transference number of 0.69 can be achieved in the composite separator, which is more than twice that of the GF separator. Therefore, the MFC-BaTiO3 separators are capable of achieving a much longer cycle life of more than 1050 h under 1 mA cm−2 and 1 mAh cm−2 in contrast to only 250 h observed with GF separators. Corresponding Zn//Cu cells presented a considerable Coulombic efficiency of 99.1%, and Zn//MnO2 full cells can stably work for over 500 cycles. This work provides deep insights into designing efficient, high-performance, and low-cost separators for aqueous batteries.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1063/5.0214281","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Aqueous Zn-ion batteries have emerged as one of the best candidates for efficient and safe energy storage systems; however, they are severely restricted by the formation of uncontrolled Zn dendrites. To address this issue, micro-fibrillated cellulose (MFC)-BaTiO3 separators are designed to regulate the Zn2+ transport behavior and achieve stable Zn anodes via coupling multiple effects. The MFC component offers a cellulose framework with robust mechanical properties and prior ion transfer channels, while the BaTiO3 particles provide dynamic electric-field regulation toward Zn2+ transfer process under different states. Due to the above-mentioned co-functions, MFC-BaTiO3 separators deliver a much better comprehensive performance than the commercial glass fiber (GF) separator. A higher Zn2+ transference number of 0.69 can be achieved in the composite separator, which is more than twice that of the GF separator. Therefore, the MFC-BaTiO3 separators are capable of achieving a much longer cycle life of more than 1050 h under 1 mA cm−2 and 1 mAh cm−2 in contrast to only 250 h observed with GF separators. Corresponding Zn//Cu cells presented a considerable Coulombic efficiency of 99.1%, and Zn//MnO2 full cells can stably work for over 500 cycles. This work provides deep insights into designing efficient, high-performance, and low-cost separators for aqueous batteries.
期刊介绍:
Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology.
In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics.
APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field.
Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.