Cold sintering approach to fabrication of high rate performance binderless LiFePO4 cathode with high volumetric capacity

SCRIPTA MATERIALIA

卷:146

Article

Seo, Joo-Hwan¹  Verlinde, Kris¹  Guo, Jing^1,2  Heidary, Damoon Sohrabi Baba¹  Rajagopalan, Ramakrishnan^3,5  Mallouk, Thomas E.⁴  Randall, Clive A.^1,2,5 

[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Ctr Dielect & Piezoelect, University Pk, PA 16802 USA

[3] Penn State Univ, Dept Engn, Du Bois, PA 15801 USA

[4] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

[5] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

关键词: Cold sintering process;    Lithium iron phosphate;    Electrode density;    Volumetric capacity;    Rate performance;   

DOI  :  10.1016/j.scriptamat.2017.12.005

来源: Elsevier

【 摘 要 】

The cold sintering process (CSP) is an attractive method for densifying ceramic-based materials by using a transient aqueous solution at low temperature under high pressure. CSP was applied to increase the volumetric capacity density of lithium iron phosphate (LiFePO4, LFP) based cathodes by densifying the cathode structure directly formed on a current collector. The binderless LFP cathode had a density of similar to 2.42 g/cm(3) and was capable of being cycled even at the high current rate of 10C. The gravimetric and volumetric capacity of the cold sintered LFP at 10C were similar to 102 mAh/g and 247 mAh/cm(3), respectively. (C) 2017 Acts Materialia Inc Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free