Development and costs calculation of lithium-sulfur cells with high sulfur load and binder free electrodes

被引:132
作者
Hagen, M. [1 ]
Doerfler, S. [2 ]
Fanz, P. [1 ]
Berger, T. [1 ]
Speck, R. [1 ]
Tuebke, J. [1 ]
Althues, H. [2 ]
Hoffmann, M. J. [3 ]
Scherr, C. [3 ]
Kaskel, S. [2 ]
机构
[1] Fraunhofer Inst Chem Technol ICT, D-76327 Pfinztal, Germany
[2] Fraunhofer Inst Mat & Beam Technol IWS, D-01277 Dresden, Germany
[3] Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany
关键词
Lithium-sulfur; Binder free; CNT; High sulfur load; Costs calculation; CARBON NANOTUBES; BATTERIES; PERFORMANCE;
D O I
10.1016/j.jpowsour.2012.10.004
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A binder free thick film sulfur cathode based on a carbon structure with carbon nano tubes (CNT) is introduced. The sulfur mass can be varied between 3 and 20 mg cm(-2) electrode leading to sulfur loads that are several times as high as in slurry electrodes. The electrode structure and thickness is examined by SEM, the surface area measured by BET and the in-plane conductivity is determined by a modified 4-point measurement. The achieved capacities for these extremely high sulfur loads are around 900 mAh g(-1) sulfur at a current of 0.64 mA cm(-2) electrode. Additionally the price of future Li-S cells (18650), both conventional sulfur slurry cathode and here introduced binder free CNT sulfur cathode were calculated and compared with a lithium-ion system (NCA-graphite). (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:260 / 268
页数:9
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