{"title":"A breakthrough in dry electrode technology for High-Energy-Density Lithium-Ion batteries with Spray-Dried SWCNT/NCM Composites","authors":"Insung Hwang, Kyung-Eun Sung, Jieun Hong, Gil-Seon Kang, Jihee Yoon","doi":"10.1016/j.cej.2025.160159","DOIUrl":null,"url":null,"abstract":"The performance of lithium-ion batteries is highly dependent on the distribution of conductive additives and the formation of an electrical network within the electrode. In particular, in dry electrode processes, the uniform dispersion of conductive additives is challenging, potentially leading to decreased battery performance. In this study, we successfully synthesized a single-walled carbon nanotubes/LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub>(NCM) composite (SW-SPD) by uniformly coating the NCM surface with single-walled carbon nanotubes using a spray-drying process to address this issue. Despite having 10 times less conductive additive compared to carbon black, the SW-SPD electrode exhibited excellent electrical conductivity and electrochemical performance, maintaining a high capacity of 137.39 mAh/g even at a 2C discharge rate. Additionally, at the high areal capacity of the<!-- --> <!-- -->electrode with 7 mAh/cm<sup>2</sup>, the electrode demonstrated significant long-term cycling performance, retaining 89.4 % of its capacity after 100 cycles, and 52.2 % after 500 cycles. SW-SPD offers an innovative solution to the dispersion challenges in dry electrode fabrication processes, presenting significant potential for the development of high-performance batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"18 1","pages":""},"PeriodicalIF":13.3000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.cej.2025.160159","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The performance of lithium-ion batteries is highly dependent on the distribution of conductive additives and the formation of an electrical network within the electrode. In particular, in dry electrode processes, the uniform dispersion of conductive additives is challenging, potentially leading to decreased battery performance. In this study, we successfully synthesized a single-walled carbon nanotubes/LiNi0.8Co0.1Mn0.1O2(NCM) composite (SW-SPD) by uniformly coating the NCM surface with single-walled carbon nanotubes using a spray-drying process to address this issue. Despite having 10 times less conductive additive compared to carbon black, the SW-SPD electrode exhibited excellent electrical conductivity and electrochemical performance, maintaining a high capacity of 137.39 mAh/g even at a 2C discharge rate. Additionally, at the high areal capacity of the electrode with 7 mAh/cm2, the electrode demonstrated significant long-term cycling performance, retaining 89.4 % of its capacity after 100 cycles, and 52.2 % after 500 cycles. SW-SPD offers an innovative solution to the dispersion challenges in dry electrode fabrication processes, presenting significant potential for the development of high-performance batteries.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.