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dc.contributor.authorWu, Yingqiang
dc.contributor.authorXie, Leqiong
dc.contributor.authorMing, Hai
dc.contributor.authorGuo, Yingjun
dc.contributor.authorHwang, Jang-Yeon
dc.contributor.authorWang, Wenxi
dc.contributor.authorHe, Xiangming
dc.contributor.authorWang, Limin
dc.contributor.authorAlshareef, Husam N.
dc.contributor.authorSun, Yang-Kook
dc.contributor.authorMing, Jun
dc.date.accessioned2020-02-20T05:50:04Z
dc.date.available2020-02-20T05:50:04Z
dc.date.issued2020-02-13
dc.date.submitted2020-01-30
dc.identifier.citationWu, Y., Xie, L., Ming, H., Guo, Y., Hwang, J.-Y., Wang, W., … Ming, J. (2020). An Empirical Model for the Design of Batteries with High Energy Density. ACS Energy Letters, 807–816. doi:10.1021/acsenergylett.0c00211
dc.identifier.doi10.1021/acsenergylett.0c00211
dc.identifier.urihttp://hdl.handle.net/10754/661575
dc.description.abstractThe development of rechargeable batteries beyond 300 Wh kg−1 for electric vehicles remains challenging, where low-capacity electrode materials (especially a graphite anode, 372 Ah kg−1) remain the major bottleneck. Although many high-capacity alternatives (e.g., Si-based alloys, metal oxides, or Li-based anode) are being widely explored, the achieved energy density has not exceeded 300 Wh kg−1. Herein, we present a new empirical model that considers multiple design parameters, besides electrode capacities, including areal loading density, voltage difference, initial capacity balance between the anode and cathode, and initial Coulombic efficiency, to estimate the achievable energy density. This approach is used to predict battery design that can achieve an energy density of >300 Wh kg−1. The model reveals that the lithium storage capacity of electrode materials is only one of several important factors affecting the ultimate battery energy density. Our model provides a new way to review the current battery systems beyond the prism of the electrode capacity and also presents a straightforward guideline for designing batteries with higher energy densities.
dc.description.sponsorshipThis work is supported by the National Natural Science Foundation of China (21978281, 21703285, and 21975250) and the National Key R&D Program of China (SQ2017YFGH001474). The authors also thank the Independent Research Project of the State Key Laboratory of Rare Earth Resources Utilization (110005R086), Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. The research was also supported by King Abdullah University of Science and Technology (KAUST) and Hanyang University. The authors also acknowledge fruitful discussions with the research scientists at Huzhou Kunlun Power Battery Materials Co., Ltd.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsenergylett.0c00211
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsenergylett.0c00211.
dc.titleAn Empirical Model for the Design of Batteries with High Energy Density
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Energy Letters
dc.rights.embargodate2021-02-13
dc.eprint.versionPost-print
dc.contributor.institutionState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
dc.contributor.institutionInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
dc.contributor.institutionResearch Institute of Chemical Defense, Beijing 100191, P. R. China
dc.contributor.institutionHuzhou Kunlun Power Battery Materials Company, Ltd., Huzhou 313000, P. R. China
dc.contributor.institutionDepartment of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea
kaust.personWang, Wenxi
kaust.personAlshareef, Husam N.
dc.date.accepted2020-02-13
refterms.dateFOA2020-02-23T08:15:45Z
dc.date.published-online2020-02-13
dc.date.published-print2020-03-13


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