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Development of High Performance Cathodes : = from Liquid to Solid-State Batteries.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development of High Performance Cathodes :/
Reminder of title:	from Liquid to Solid-State Batteries.
Author:	Deng, Sixu.
Description:	1 online resource (298 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 83-11, Section: B.
Contained By:	Dissertations Abstracts International83-11B.
Subject:	Electrolytes. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29239017click for full text (PQDT)
ISBN:	9798438765271

Development of High Performance Cathodes : = from Liquid to Solid-State Batteries.
Deng, Sixu.

Development of High Performance Cathodes :from Liquid to Solid-State Batteries. - 1 online resource (298 pages)

Source: Dissertations Abstracts International, Volume: 83-11, Section: B.

Thesis (Ph.D.)--The University of Western Ontario (Canada), 2022.

Includes bibliographical references

Lithium-ion batteries (LIBs) are critical for the development of electric vehicles (EVs) because of their higher operating voltages compared to other energy storage technologies. However, the development of start-of-the-art LIBs touched the ceiling because of three main challenges: safety risks, limited energy density, and high cost. Accordingly, all-solid-state lithium-ion batteries (ASSLIBs) have recently emerged as promising alternative batteries for next-generation EVs because of their ability to overcome the drawbacks of conventional LIBs. Whether in conventional liquid LIBs or ASSLIBs, cathode materials are crucial in determining the overall performance. Hence, this thesis focuses on understanding the degradation mechanism of cathode interfaces and developing novel interfacial strategies in both liquid LIBs and ASSLIBs.The first work in this thesis develops a hybrid Li3PO4-TiO2 coating layer by atomic layer deposition (ALD) to improve both interfacial ionic/electronic conductivities and stability for high-voltage LiNi0.5Mn1.5O4 (LNMO) cathode in liquid LIBs.In the second work, a dual-functional Li3PO4 (LPO) modification is designed for Ni-rich layered oxide cathodes, aiming to address both the interfacial side reactions and the microstructural cracks in sulfide-based ASSLIBs.In the third work, the origin of cathode interface degradation in sulfide-based ASSLIBs is unveiled by the X-ray and electrochemical analyses. Residual lithium compounds on the surface of Ni-rich layered cathodes are proved as the main reason that triggers the oxidation of sulfide solid-state electrolytes (SSEs), therefore inducing severe side reactions at cathode interface and structural degradation of Ni-rich cathodes.The fourth wok for the first time reports a controllable semi-conductive additive, poly(3,4-ethylenedioxythiophene) (PEDOT), in sulfide-based ASSLIBs, therefore realizing effective electron transfer at the cathode/SSE/additive three-phase interface along with a competitive rate capacity.To realize fast-charging ASSLIBs, the fifth work investigates the interfacial evolution of Al foil current collector in all-climate environment. At room temperature, side reactions are the main challenge for interfacial stability. At low temperature, the low Li+ and electron transfer kinetics along with side reactions are the key limitations for rate capability. The challenges at both room temperature and low temperature can be addressed by the graphene modification on Al foil.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798438765271Subjects--Topical Terms:

656992
Electrolytes.
Index Terms--Genre/Form:

542853
Electronic books.

Development of High Performance Cathodes : = from Liquid to Solid-State Batteries.
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035 $a AAI29239017
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100 1 $a Deng, Sixu. $3 3694259
245 1 0 $a Development of High Performance Cathodes : $b from Liquid to Solid-State Batteries.
264 0 $c 2022
300 $a 1 online resource (298 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 83-11, Section: B.
500 $a Advisor: Sun, Xueliang.
502 $a Thesis (Ph.D.)--The University of Western Ontario (Canada), 2022.
504 $a Includes bibliographical references
520 $a Lithium-ion batteries (LIBs) are critical for the development of electric vehicles (EVs) because of their higher operating voltages compared to other energy storage technologies. However, the development of start-of-the-art LIBs touched the ceiling because of three main challenges: safety risks, limited energy density, and high cost. Accordingly, all-solid-state lithium-ion batteries (ASSLIBs) have recently emerged as promising alternative batteries for next-generation EVs because of their ability to overcome the drawbacks of conventional LIBs. Whether in conventional liquid LIBs or ASSLIBs, cathode materials are crucial in determining the overall performance. Hence, this thesis focuses on understanding the degradation mechanism of cathode interfaces and developing novel interfacial strategies in both liquid LIBs and ASSLIBs.The first work in this thesis develops a hybrid Li3PO4-TiO2 coating layer by atomic layer deposition (ALD) to improve both interfacial ionic/electronic conductivities and stability for high-voltage LiNi0.5Mn1.5O4 (LNMO) cathode in liquid LIBs.In the second work, a dual-functional Li3PO4 (LPO) modification is designed for Ni-rich layered oxide cathodes, aiming to address both the interfacial side reactions and the microstructural cracks in sulfide-based ASSLIBs.In the third work, the origin of cathode interface degradation in sulfide-based ASSLIBs is unveiled by the X-ray and electrochemical analyses. Residual lithium compounds on the surface of Ni-rich layered cathodes are proved as the main reason that triggers the oxidation of sulfide solid-state electrolytes (SSEs), therefore inducing severe side reactions at cathode interface and structural degradation of Ni-rich cathodes.The fourth wok for the first time reports a controllable semi-conductive additive, poly(3,4-ethylenedioxythiophene) (PEDOT), in sulfide-based ASSLIBs, therefore realizing effective electron transfer at the cathode/SSE/additive three-phase interface along with a competitive rate capacity.To realize fast-charging ASSLIBs, the fifth work investigates the interfacial evolution of Al foil current collector in all-climate environment. At room temperature, side reactions are the main challenge for interfacial stability. At low temperature, the low Li+ and electron transfer kinetics along with side reactions are the key limitations for rate capability. The challenges at both room temperature and low temperature can be addressed by the graphene modification on Al foil.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Electrolytes. $3 656992
650 4 $a Electrodes. $3 629151
650 4 $a Grain boundaries. $3 748639
650 4 $a Carbon. $3 604057
650 4 $a Protective coatings. $3 685948
650 4 $a Energy storage. $3 652130
650 4 $a Interfaces. $2 gtt $3 834756
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Condensed matter physics. $3 3173567
650 4 $a Materials science. $3 543314
650 4 $a Alternative energy. $3 3436775
650 4 $a Electric vehicles. $3 1613392
650 4 $a Batteries. $3 3555267
650 4 $a Electrical engineering. $3 649834
650 4 $a Lithium. $3 1638490
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0363
690 $a 0544
690 $a 0794
690 $a 0611
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a The University of Western Ontario (Canada). $3 1017622
773 0 $t Dissertations Abstracts International $g 83-11B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29239017 $z click for full text (PQDT)