Further improvements and developments of metal sulfide-based anodes rely on a fundamental understanding of their electrochemical cycling mechanisms. Though, most of these pure metallic anodes experience large volume changes during lithiation and delithiation processes that often results in cracking of the anode material and a loss electrical contact between the particles.Nanosized metal sulfides were recently found to possess better cycling stability and larger reversible capacities over pure metals. These metals react reversibly with a large amount of Li per formula unit to form lithium–metal alloys, rendering these materials promising candidates for next-generation LIBs with high energy density. Alternative anodes are being explored, including other lithium-reactive metals, such as Si, Ge, Zn, V, and so forth. Theoretically, using a lithium metal more » anode is the best way of delivering high energy density due to its largest theoretical capacity of more than 3800 mAh g -1 however, lithium metal is highly reactive with liquid electrolytes. However, their fabrication processes are often complicated and expensive. Some nanostructured carbon materials offer very interesting reversible capacities and can be considered as future anode materials. Carbon-based anodes, serving as the main negative electrodes in LIBs, have an intrinsic capacity limitation due to the intercalation mechanism. However, the energy density and cycling life of LIBs must extend beyond the current reach of commercial electrodes to meet the performance requirements for transportation applications.
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Lithium-ion batteries (LIBs) commercially dominate portable energy storage and have been extended to hybrid/electric vehicles by utilizing electrode materials with enhanced energy density. (BNL), Upton, NY (United States) Sponsoring Org.: USDOE Office of Science (SC), Basic Energy Sciences (BES) OSTI Identifier: 1557705 Alternate Identifier(s): OSTI ID: 1542525 Report Number(s): BNL-211912-2019-JAAM Journal ID: ISSN 2211-2855 Grant/Contract Number: SC0012704 Resource Type: Journal Article: Accepted Manuscript Journal Name: Nano Energy Additional Journal Information: Journal Volume: 63 Journal Issue: C Journal ID: ISSN 2211-2855 Publisher: Elsevier Country of Publication: United States Language: English Subject: 29 ENERGY PLANNING, POLICY AND ECONOMY Lithium ion battery 2D metal chalcogenides Conversion reaction In situ transmission electron microsco-py = , Center for Electrical Energy Storage (CEES) Brookhaven National Lab. Publication Date: Sat Jul 06 00:00: Research Org.: Energy Frontier Research Centers (EFRC) (United States).
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Northwestern Polytechnical Univ., Xi'an (People's Republic of China).
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Northwestern Univ., Evanston, IL (United States) Harvard Univ., Cambridge, MA (United States).Northwestern Polytechnical Univ., Xi'an (People's Republic of China) Brookhaven National Lab.