Electrophoretic deposition of LiFePO4 onto 3-D current collectors for high areal loading battery cathodes

被引：27

作者：

Moyer, Kathleen ^{[1
,2
]}

Carter, Rachel ^{[2
]}

Hanken, Trevor ^{[2
]}

Douglas, Anna ^{[1
,2
]}

Oakes, Landon ^{[1
,2
]}

Pint, Cary L. ^{[1
,2
]}

机构：

[1] Vanderbilt Univ, Interdisciplinary Mat Sci Program, Nashville, TN 37235 USA

[2] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2019年 / 241卷

关键词：

Lithium-ion batteries; LiFePO4; Electrophoretic deposition; Three-dimensional current collector; Carbon cloth; Cycling stability; Areal capacity; LITHIUM-SULFUR BATTERY; CARBON NANOTUBES; ION BATTERIES; COMPOSITE; PERFORMANCE; NANOWIRE; COST; NANOPARTICLES; OPTIMIZATION; SUSPENSIONS;

D O I：

10.1016/j.mseb.2019.02.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional (3-D) current collectors in lithium-ion batteries with high areal loading of cathode materials enables reduced packaging weight and cost compared to planar current collector materials. Here, we demonstrate the use of electrophoretic deposition (EPD) as a route to prepare thick cathode assembles in 3-D scaffolds using LiFePO4 with areal loadings measured from 2 mg/cm(2) and up to 20 mg/cm(2) in conductive carbon cloth materials. Our findings demonstrate the LiFePO4 cathodes with areal capacity up to similar to 2.4 mAh/cm(2) and minimal decay (< 0.11%) per cycle. This emphasizes EPD as both a technique to overcome the limitations of conventional manufacturing approaches in scaling to 3-D collector architectures for improved cell-level energy density, but also a route to transition away from costly NMP processing toward cheaper, less toxic solvents, such as ethanol as is demonstrated in this study.

引用

页码：42 / 47

页数：6