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Micro-fibrous organic radical electrode to improve the electrochemical properties of organic rechargeable batteries

Jae-Kwang Kim (Institutionen för teknisk fysik, Kondenserade materiens fysik)
Journal of Power Sources (0378-7753). Vol. 242 (2013), p. 683-686.
[Artikel, refereegranskad vetenskaplig]

A micro-fibrous organic electrode has been prepared by electrospinning process using poly(2,2,6,6-tetramethylpiperidinyloxy-4-ylmethacrylate) (PTMA), poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-HFP)) and carbon black powder. The micro-fibrous PTMA electrode (MPE) film is investigated by FT-IR, TGA, SEM, TEM and electrochemical tests. The MPE shows excellent rate-capability and cycle performance. The MPE based lithium cell displays a high discharge capacity of 111 mAh g(-1) at 1C. Even at a high current density of 50C, the MPE cell presents a discharge capacity of 109 mAh g(-1). Moreover, the MPE have remarkably improved the volumetric capacity (209 mAh cm(-3) at 10C) compared with a nano-fibrous PTMA electrode. The excellent electrochemical performance is ascribed to the microstructure that promotes fast ion transport through short diffusion pathways and at the same time facilitates electron transport.

Nyckelord: Micro-fibrous PTMA, Electrospinning, Volumetric capacity, Rate-capability, Organic rechargeable, lithium batteries, cathode material, polymer electrolyte, storage, materials, ion batteries, ptma cathode, performance

Denna post skapades 2013-09-30. Senast ändrad 2014-03-24.
CPL Pubid: 184251


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Institutioner (Chalmers)

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


Teknisk fysik

Chalmers infrastruktur