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gamma-Fe2O3 nanoparticles encapsulated in polypyrrole for quasi-solid-state lithium batteries

Jae-Kwang Kim (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Luis Antonio Aguilera Medina (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; F. Croce ; J. H. Ahn
Journal of Materials Chemistry A (2050-7488). Vol. 2 (2014), 10, p. 3551-3556.
[Artikel, refereegranskad vetenskaplig]

Nano-sized gamma-Fe2O3 was prepared by a minor modification method in combination with high energy ball milling, and a core-shell structure was designed using polypyrrole (PPy) by chemical polymerization. The structure and morphology of core-shell gamma-Fe2O3-PPy were investigated by XRD, FT-IR, SEM, and TEM. For solid-state batteries, PPy-Fe2O3 cells were fabricated with a gel polymer electrolyte prepared by an electrospinning process. The charge and discharge gravimetric capacities of all-solid-state batteries at the first cycle are 400 and 421 mA h g(-1) and 220 and 221 mA h g(-1) for 0.1 and 1 C-rates, respectively, which correspond to 760 and 800 mA h cm(-3) and 418 and 420 mA h cm(-3) of volumetric capacity.

Nyckelord: ION BATTERIES, POLYMER ELECTROLYTES, ELECTROCHEMICAL PROPERTIES, RECHARGEABLE BATTERY, CATHODE MATERIALS, POLYANILINE, PERFORMANCE, ALPHA-FE2O3, INSERTION, SURFACE



Denna post skapades 2014-03-24.
CPL Pubid: 195531

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens fysik (1900-2015)

Ämnesområden

Fysik

Chalmers infrastruktur