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 到查詢結果 [ null ]

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries./
作者:	Cannon, Andrew.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	143 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-04, Section: B.
Contained By:	Dissertations Abstracts International83-04B.
標題:	Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28720868
ISBN:	9798460479214

Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries.
Cannon, Andrew.

Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 143 p.

Source: Dissertations Abstracts International, Volume: 83-04, Section: B.

Thesis (Ph.D.)--Boston University, 2021.

This item must not be sold to any third party vendors.

In this dissertation, a meso-scale computational model, using the smoothed particle hydrodynamics (SPH) numerical method, is used to simulate the deposition process at the electrolyte/anode interface of a lithium metal battery. The SPH model simulates the physics at this interface by solving the governing equations for diffusion, migration, and potential distribution in a binary electrolyte and near a reactive, moving interface and dendrite surfaces. The model is implemented in the LAMMPs code base and includes the ability to model charge/discharge cycles.Using the SPH model, the effect of various structures in the electrolyte on mass transport and dendrite growth are investigated. The first goal is to understand the effects of local transport through battery separators on dendrite growth by explicitly representing commercial battery separator structures taken from SEM images. Using SPH, the geometrical parameters of the separator are characterized based on their effect on mass transport and dendrite growth. The findings from the simulations suggest that the tortuosity of the separator is a key property affecting transport. Additionally, despite the characterization of battery separators using bulk properties, the heterogeneity of the separators lead to vastly different local transport outcomes. Building upon these insights and in collaboration with experimental groups, the effect of the structure of novel coatings and electrolytes on the mass transport to the anode and subsequent dendrite morphology are investigated. The computational studies demonstrate the mechanisms by which these novel techniques improve the performance of lithium metal batteries such as reducing the pore size in carbon nanomembranes reduces dendrite length and increases deposition density; ionic liquid crystal supramolecular assemblies oriented perpendicular to the anode increase the uniformity of Li+ deposition at the anode; the effects of homogeneity of ionic conductivity of protective coatings on the anode to enable uniform Li+ deposition.Additionally, the model is used to explore how the local conditions in the electrolyte change during battery cycling. During standard charging, the Li+ concentrations at the anode create reaction rate limited conditions that lead to more uniform Li+ deposition. However, during "fast" charging, the local Li+ concentrations rapidly decrease leading to mass transport limited conditions which result in dendrite growth and lower battery performance.

ISBN: 9798460479214Subjects--Topical Terms:

876794
Energy.
Subjects--Index Terms:

Mass transport

Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries.
LDR:03627nmm a2200349 4500 001 2342414
005 20220318093138.5
008 241004s2021 ||||||||||||||||| ||eng d
020 $a 9798460479214
035 $a (MiAaPQ)AAI28720868
035 $a AAI28720868
040 $a MiAaPQ $c MiAaPQ
100 1 $a Cannon, Andrew. $0 (orcid)0000-0002-8750-6199 $3 3680782
245 1 0 $a Understanding Transport Effects on Dendrite Formation Near the Anode-Electrolyte Interface of Lithium Metal Batteries.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 143 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-04, Section: B.
500 $a Advisor: Ryan, Emily.
502 $a Thesis (Ph.D.)--Boston University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a In this dissertation, a meso-scale computational model, using the smoothed particle hydrodynamics (SPH) numerical method, is used to simulate the deposition process at the electrolyte/anode interface of a lithium metal battery. The SPH model simulates the physics at this interface by solving the governing equations for diffusion, migration, and potential distribution in a binary electrolyte and near a reactive, moving interface and dendrite surfaces. The model is implemented in the LAMMPs code base and includes the ability to model charge/discharge cycles.Using the SPH model, the effect of various structures in the electrolyte on mass transport and dendrite growth are investigated. The first goal is to understand the effects of local transport through battery separators on dendrite growth by explicitly representing commercial battery separator structures taken from SEM images. Using SPH, the geometrical parameters of the separator are characterized based on their effect on mass transport and dendrite growth. The findings from the simulations suggest that the tortuosity of the separator is a key property affecting transport. Additionally, despite the characterization of battery separators using bulk properties, the heterogeneity of the separators lead to vastly different local transport outcomes. Building upon these insights and in collaboration with experimental groups, the effect of the structure of novel coatings and electrolytes on the mass transport to the anode and subsequent dendrite morphology are investigated. The computational studies demonstrate the mechanisms by which these novel techniques improve the performance of lithium metal batteries such as reducing the pore size in carbon nanomembranes reduces dendrite length and increases deposition density; ionic liquid crystal supramolecular assemblies oriented perpendicular to the anode increase the uniformity of Li+ deposition at the anode; the effects of homogeneity of ionic conductivity of protective coatings on the anode to enable uniform Li+ deposition.Additionally, the model is used to explore how the local conditions in the electrolyte change during battery cycling. During standard charging, the Li+ concentrations at the anode create reaction rate limited conditions that lead to more uniform Li+ deposition. However, during "fast" charging, the local Li+ concentrations rapidly decrease leading to mass transport limited conditions which result in dendrite growth and lower battery performance.
590 $a School code: 0017.
650 4 $a Energy. $3 876794
650 4 $a Engineering. $3 586835
650 4 $a Computational physics. $3 3343998
653 $a Mass transport
653 $a Battery separators
653 $a Dendrite growth
690 $a 0791
690 $a 0537
690 $a 0216
710 2 $a Boston University. $b Mechanical Engineering ENG. $3 3181571
773 0 $t Dissertations Abstracts International $g 83-04B.
790 $a 0017
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28720868