語系:
繁體中文
English
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
Functional Design of Advanced Polyme...
~
Mackanic, David George.
FindBook
Google Book
Amazon
博客來
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries./
作者:
Mackanic, David George.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:
233 p.
附註:
Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
Contained By:
Dissertations Abstracts International82-10B.
標題:
Polymers. -
電子資源:
https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28354122
ISBN:
9798597047294
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries.
Mackanic, David George.
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries.
- Ann Arbor : ProQuest Dissertations & Theses, 2020 - 233 p.
Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
Thesis (Ph.D.)--Stanford University, 2020.
This item must not be sold to any third party vendors.
Lithium ion batteries (LIBs) are ubiquitous for applications in consumer electronics, electric vehicles, and grid-scale energy storage. Despite rapidly increasing demand, modern LIBs face significant challenges with regards to their safety and energy density. Additionally, the rigid nature of existing LIBs precludes their use in emerging applications in flexible/wearable electronics. Polymeric materials promise to address many of the issues facing LIBs, yet the existing polymers used commercially fall short of this goal. In this work, we design functional polymer materials to address three major challenges for next-generation LIBs. We explore the structure-property relationships of these polymer architectures in the context of ion transport, mechanical properties, and electrochemical performance.In the first project, a new polymer electrolyte is designed to replace the flammable liquid electrolyte in conventional LIBs. We study the effect of lithium ion coordination in polymer electrolytes and discover a modified polymeric backbone that loosely coordinates to lithium ions. The loose coordination of this new polymer electrolyte enables an improved lithium transference number of 0.54, compared to 0.2 achieved in conventional polymer electrolytes. This polymer electrolyte is demonstrated to operate effectively in a battery with a lithium-metal anode.In the second project, the learnings of the lithium coordination environment from the first project are used to design a multifunctional polymer coating to stabilize high energy density lithium metal anodes. We combined loosely-coordinating fluorinated ligands dynamically bonded with single-ion-conductive metal centers. The resulting supramolecular polymer network functions as an excellent lithium metal coating, allowing for achievement of one of the highest-reported coulombic efficiencies and cycle lives of a lithium metal anode. A systematic investigation of the chemical structure of the coating reveals that the properties of dynamic flowability, single-ion transport, and electrolyte blocking are synergistic in improving Li-metal coating performance. This coating is applied in a commercially relevant lithium metal full-cell and increases the cycle life over two-fold compared to an uncoated anode. The final project uses supramolecular polymer design to create ultra-robust ion transport materials. We show that when soft ion conducting segments are combined with strong dynamically bonded moieties in the polymer backbone, the ion transport properties can be decoupled from the mechanical properties. This decoupling enables for the creation of polymer electrolytes with extremely high toughness and high ionic conductivity. These supramolecular materials enable the fabrication of stretchable and deformable batteries that demonstrate respectable energy density even when stretched to 70% of their original length.Overall, the work demonstrated in this thesis provides a robust understanding towards designing polymer networks with tunable ion transport and mechanical properties. Additionally, the polymer materials demonstrated here provide promising avenues toward improving the safety, energy density, and flexibility of LIBs.
ISBN: 9798597047294Subjects--Topical Terms:
535398
Polymers.
Subjects--Index Terms:
Lithium ion batteries
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries.
LDR
:04416nmm a2200373 4500
001
2280114
005
20210823091523.5
008
220723s2020 ||||||||||||||||| ||eng d
020
$a
9798597047294
035
$a
(MiAaPQ)AAI28354122
035
$a
(MiAaPQ)STANFORDbp308xk2511
035
$a
AAI28354122
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Mackanic, David George.
$3
3558616
245
1 0
$a
Functional Design of Advanced Polymer Architectures for Improved Lithium-Ion Batteries.
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2020
300
$a
233 p.
500
$a
Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
500
$a
Advisor: Bao, Zhenan;Cui, Yi;Qin, Jian.
502
$a
Thesis (Ph.D.)--Stanford University, 2020.
506
$a
This item must not be sold to any third party vendors.
520
$a
Lithium ion batteries (LIBs) are ubiquitous for applications in consumer electronics, electric vehicles, and grid-scale energy storage. Despite rapidly increasing demand, modern LIBs face significant challenges with regards to their safety and energy density. Additionally, the rigid nature of existing LIBs precludes their use in emerging applications in flexible/wearable electronics. Polymeric materials promise to address many of the issues facing LIBs, yet the existing polymers used commercially fall short of this goal. In this work, we design functional polymer materials to address three major challenges for next-generation LIBs. We explore the structure-property relationships of these polymer architectures in the context of ion transport, mechanical properties, and electrochemical performance.In the first project, a new polymer electrolyte is designed to replace the flammable liquid electrolyte in conventional LIBs. We study the effect of lithium ion coordination in polymer electrolytes and discover a modified polymeric backbone that loosely coordinates to lithium ions. The loose coordination of this new polymer electrolyte enables an improved lithium transference number of 0.54, compared to 0.2 achieved in conventional polymer electrolytes. This polymer electrolyte is demonstrated to operate effectively in a battery with a lithium-metal anode.In the second project, the learnings of the lithium coordination environment from the first project are used to design a multifunctional polymer coating to stabilize high energy density lithium metal anodes. We combined loosely-coordinating fluorinated ligands dynamically bonded with single-ion-conductive metal centers. The resulting supramolecular polymer network functions as an excellent lithium metal coating, allowing for achievement of one of the highest-reported coulombic efficiencies and cycle lives of a lithium metal anode. A systematic investigation of the chemical structure of the coating reveals that the properties of dynamic flowability, single-ion transport, and electrolyte blocking are synergistic in improving Li-metal coating performance. This coating is applied in a commercially relevant lithium metal full-cell and increases the cycle life over two-fold compared to an uncoated anode. The final project uses supramolecular polymer design to create ultra-robust ion transport materials. We show that when soft ion conducting segments are combined with strong dynamically bonded moieties in the polymer backbone, the ion transport properties can be decoupled from the mechanical properties. This decoupling enables for the creation of polymer electrolytes with extremely high toughness and high ionic conductivity. These supramolecular materials enable the fabrication of stretchable and deformable batteries that demonstrate respectable energy density even when stretched to 70% of their original length.Overall, the work demonstrated in this thesis provides a robust understanding towards designing polymer networks with tunable ion transport and mechanical properties. Additionally, the polymer materials demonstrated here provide promising avenues toward improving the safety, energy density, and flexibility of LIBs.
590
$a
School code: 0212.
650
4
$a
Polymers.
$3
535398
650
4
$a
Dihydrofolate reductase.
$3
3558617
650
4
$a
Electrolytes.
$3
656992
650
4
$a
Batteries.
$3
3555267
650
4
$a
Energy.
$3
876794
650
4
$a
Electrodes.
$3
629151
650
4
$a
Carbon.
$3
604057
650
4
$a
Lithium.
$3
1638490
653
$a
Lithium ion batteries
653
$a
Polymer electrolytes
653
$a
Ion transport
653
$a
Energy density
690
$a
0542
690
$a
0495
690
$a
0791
710
2
$a
Stanford University.
$3
754827
773
0
$t
Dissertations Abstracts International
$g
82-10B.
790
$a
0212
791
$a
Ph.D.
792
$a
2020
793
$a
English
856
4 0
$u
https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28354122
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9431847
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入