2,3,6,7,10,11-Hexamethoxytriphenylene (HMTP): A new organic cathode material for lithium batteries
Artikel i vetenskaplig tidskrift, 2012

We propose a new organic cathode material for rechargeable lithium battery applications: 2,3,6,7,10,11-hexamethoxytriphenylene (HMTP). HMTP is composed of six methoxy functional groups substituted onto a central triphenylene moiety. The cell, incorporating 40 wt.% of organic cathode material, exhibits full specific capacity at current densities up to 3 C. The main advantage of HMTP as organic cathode material lies in a stable cell performance and negligible self discharge, even though the capacity is lower, similar to 66 mAh/g, compared to other organic cathode materials. Cells with the HMTP cathode showed >95% retention of the initial discharge capacity after 50 cycles at 1 C and self-discharge was not observed during a full month of open circuit voltage measurements. The latter is due to the fact that the nature of the HMTP radical is fundamentally different from other organic cathode materials' radicals.

3

Organic cathode materials

rechargeable batteries

7

2

11-Hexamethoxytriphenylene

10

Self-discharge

ptma cathode

polymer

Lithium secondary batteries

6

radical battery

electrochemical properties

Författare

Jae-Kwang Kim

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Frederic Thebault

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

M. Y. Heo

Gyeongsang National University

D. S. Kim

Gyeongsang National University

Örjan Hansson

Göteborgs universitet

J. H. Ahn

Gyeongsang National University

Patrik Johansson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Lars Öhrström

Chalmers, Kemi- och bioteknik, Fysikalisk kemi

Aleksandar Matic

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Per Jacobsson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Electrochemistry Communications

1388-2481 (ISSN)

Vol. 21 1 50-53

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

DOI

10.1016/j.elecom.2012.05.016