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dc.contributor.author선양국-
dc.date.accessioned2019-11-24T14:41:09Z-
dc.date.available2019-11-24T14:41:09Z-
dc.date.issued2017-04-
dc.identifier.citationACS NANO, v. 11, no. 6, page. 5853-5863en_US
dc.identifier.issn1936-0851-
dc.identifier.issn1936-086X-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acsnano.7b01494-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/113698-
dc.description.abstractThe formation of metallic lithium microstructures in the form of dendrites or mosses at the surface of anode electrodes (e.g., lithium metal, graphite, and silicon) leads to rapid capacity fade and poses grave safety risks in rechargeable lithium batteries. We present here a direct, relative quantitative analysis of lithium deposition on graphite anodes in pouch cells under normal operating conditions, paired with a model cathode material, the layered nickel-rich oxide LiNi0.61Co0.12Mn0.27O2, over the course of 3000 charge discharge cycles. Secondary-ion mass spectrometry chemically dissects the solid electrolyte interphase (SEI) on extensively cycled graphite with virtually atomic depth resolution and reveals substantial growth of Li-metal deposits. With the absence of apparent kinetic (e.g., fast charging) or stoichiometric restraints (e.g., overcharge) during cycling, we show lithium deposition on graphite is triggered by certain transition-metal ions (manganese in particular) dissolved from the cathode in a disrupted SEI. This insidious effect is found to initiate at a very early stage of cell operation (<200 cycles) and can be effectively inhibited by substituting a small amount of aluminum (similar to 1 mol %) in the cathode, resulting in much reduced transition-metal dissolution and drastically improved cyclability. Our results may also be applicable to studying the unstable electrodeposition of lithium on other substrates, including Li metal.en_US
dc.description.sponsorshipThis work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program (Battery500 Consortium) award number DE-EE0007762, the Global Frontier R&D Program (Grant No. 2013M3A6B1078875) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, Information & Communication Technology (ICT), and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (Grant No. 2014R1A2A1A13050479). The authors also thank Kristofer B. Ohlinger for assistance with the ion-milling equipment and Dr. Richard D. Piner for assistance with the optical profilometer.en_US
dc.language.isoen_USen_US
dc.publisherAMER CHEMICAL SOCen_US
dc.subjectlithium-ion batteriesen_US
dc.subjectnickel-rich layered oxidesen_US
dc.subjectcarbon anodesen_US
dc.subjectlithium depositionen_US
dc.subjecttransition-metal dissolutionen_US
dc.subjectsecondary-ion mass spectrometryen_US
dc.titleFormation and Inhibition of Metallic Lithium Microstructures in Lithium Batteries Driven by Chemical Crossoveren_US
dc.typeArticleen_US
dc.relation.no6-
dc.relation.volume11-
dc.identifier.doi10.1021/acsnano.7b01494-
dc.relation.page5853-5863-
dc.relation.journalACS NANO-
dc.contributor.googleauthorLi, Wangda-
dc.contributor.googleauthorKim, Un-Hyuck-
dc.contributor.googleauthorDolocan, Andrei-
dc.contributor.googleauthorSun, Yang-Kook-
dc.contributor.googleauthorManthiram, Arumugam-
dc.relation.code2017000564-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidyksun-
dc.identifier.researcherIDB-9157-2013-
dc.identifier.orcidhttp://orcid.org/0000-0002-0117-0170-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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