東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport./
作者:	Liu, Baichuan.
面頁冊數:	1 online resource (135 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
Contained By:	Dissertations Abstracts International84-04B.
標題:	Electrolytes. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29340492click for full text (PQDT)
ISBN:	9798351499840

Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport.
Liu, Baichuan.

Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport. - 1 online resource (135 pages)

Source: Dissertations Abstracts International, Volume: 84-04, Section: B.

Thesis (Ph.D.)--Brigham Young University, 2022.

Includes bibliographical references

Electrode microstructure influences ionic transport and electronic transport and is a key factor that affects lithium-ion battery performance. Non-uniform microstructure or heterogeneity in battery electrodes has long been observed and leads to non-uniform transport properties. This work provides a better understanding of in-plane heterogeneity at millimeter length scale and through-plane heterogeneity at micrometer length scale, through a combination of experiment and modeling.The first part of this work develops the aperture probe technique, which is an experimental method and associated model to locally estimate ionic transport, represented by MacMullin number, in the electrode. By generating contour maps of MacMullin number, the in-plane variation of ionic transport is visualized in the electrodes. The local ionic transport measurement technique is validated by comparing with another measurement technique and showing an agreement between the results obtained from the two techniques.The second part of this work focuses on characterizing dual-layer anodes that consist of two layers of coating with distinctly different microstructures. The aperture probe technique was adapted to determine the MacMullin numbers in the two layers separately. The method was validated by a series of virtual experiments and by comparing in one case to an electrode film that was delaminated from the current collector and experimentally sampled from both sides.Because both the electronic transport and the ionic transport are found to be related with the electrode microstructure, it is of interest to understand how these two transport properties relate to each other. The local electronic conductivity and MacMullin number of several commercial-grade electrodes were mapped. The correlation between the two transport properties is distinct for each electrode and significant at length scales larger than about 6 mm.The last part of this work investigates how heterogeneity of ionic transport affects the cycling performance of a lithium-ion cell. A localized MacMullin number measurement is made to characterize the ionic transport heterogeneity of electrodes prior to cycling. Then synchrotron-based X-ray diffraction is applied to analyze the heterogeneity in state of lithiation after high-rate cycling. When comparing the ionic transport map and the state-of-charge map, no strong correlation is observed. While this experiment was inconclusive, it suggests that other factors are more responsible for spatial variations in state of lithiation.

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

Mode of access: World Wide Web

ISBN: 9798351499840Subjects--Topical Terms:

656992
Electrolytes.
Index Terms--Genre/Form:

542853
Electronic books.

Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport.
LDR:03830nmm a2200337K 4500 001 2360669
005 20231015184449.5
006 m o d
007 cr mn ---uuuuu
008 241011s2022 xx obm 000 0 eng d
020 $a 9798351499840
035 $a (MiAaPQ)AAI29340492
035 $a (MiAaPQ)BrighamYoung10523
035 $a AAI29340492
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Liu, Baichuan. $3 3701292
245 1 0 $a Understanding Microstructure Heterogeneity in Li-Ion Battery Electrodes Through Localized Measurement of Ionic Transport.
264 0 $c 2022
300 $a 1 online resource (135 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: 84-04, Section: B.
500 $a Advisor: Wheeler, Dean R.
502 $a Thesis (Ph.D.)--Brigham Young University, 2022.
504 $a Includes bibliographical references
520 $a Electrode microstructure influences ionic transport and electronic transport and is a key factor that affects lithium-ion battery performance. Non-uniform microstructure or heterogeneity in battery electrodes has long been observed and leads to non-uniform transport properties. This work provides a better understanding of in-plane heterogeneity at millimeter length scale and through-plane heterogeneity at micrometer length scale, through a combination of experiment and modeling.The first part of this work develops the aperture probe technique, which is an experimental method and associated model to locally estimate ionic transport, represented by MacMullin number, in the electrode. By generating contour maps of MacMullin number, the in-plane variation of ionic transport is visualized in the electrodes. The local ionic transport measurement technique is validated by comparing with another measurement technique and showing an agreement between the results obtained from the two techniques.The second part of this work focuses on characterizing dual-layer anodes that consist of two layers of coating with distinctly different microstructures. The aperture probe technique was adapted to determine the MacMullin numbers in the two layers separately. The method was validated by a series of virtual experiments and by comparing in one case to an electrode film that was delaminated from the current collector and experimentally sampled from both sides.Because both the electronic transport and the ionic transport are found to be related with the electrode microstructure, it is of interest to understand how these two transport properties relate to each other. The local electronic conductivity and MacMullin number of several commercial-grade electrodes were mapped. The correlation between the two transport properties is distinct for each electrode and significant at length scales larger than about 6 mm.The last part of this work investigates how heterogeneity of ionic transport affects the cycling performance of a lithium-ion cell. A localized MacMullin number measurement is made to characterize the ionic transport heterogeneity of electrodes prior to cycling. Then synchrotron-based X-ray diffraction is applied to analyze the heterogeneity in state of lithiation after high-rate cycling. When comparing the ionic transport map and the state-of-charge map, no strong correlation is observed. While this experiment was inconclusive, it suggests that other factors are more responsible for spatial variations in state of lithiation.
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 Anisotropy. $3 596747
650 4 $a Electrodes. $3 629151
650 4 $a Lithium. $3 1638490
650 4 $a Electric vehicles. $3 1613392
650 4 $a Materials science. $3 543314
650 4 $a Electrical engineering. $3 649834
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0544
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a Brigham Young University. $3 1017451
773 0 $t Dissertations Abstracts International $g 84-04B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29340492 $z click for full text (PQDT)