Design of Battery Electrodes with Dual-Scale Porosity to Minimize Tortuosity and Maximize Performance

被引：264

作者：

Bae, Chang-Jun ^{[1
]}

Erdonmez, Can K. ^{[2
]}

Halloran, John W. ^{[3
]}

Chiang, Yet-Ming ^{[1
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

[2] Brookhaven Natl Lab, Energy Storage Grp, Upton, NY 11973 USA

[3] Univ Michigan, Ann Arbor, MI 48109 USA

来源：

ADVANCED MATERIALS | 2013年 / 25卷 / 09期

关键词：

micro-engineered electrodes; tortuosity; lithium-ion batteries; LITHIUM BATTERIES; DISCHARGE; CERAMICS; NETWORKS; CHARGE;

D O I：

10.1002/adma.201204055

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrode pore topology can be tuned to improve battery power without sacrificing energy density. One effective design has "dual-scale" porosity, combining aligned channels and a porous matrix. Iterated co-extrusion yields sintered cathodes of this architecture, with channel spacing tunable down to ∼15 μm. Results show that net tortuosity is reduced compared to homogeneous porosity, significantly improving cell-discharge rates. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：1254 / 1258

页数：5

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