Details

Autor(en) / Beteiligte

• Sheng, Jinzhi
• Li, Qidong
• Wei, Qiulong
• Zhang, Pengfei
• Wang, Qinqin
• Lv, Fan
• An, Qinyou
• Chen, Wei
• Mai, Liqiang

Titel

Metastable amorphous chromium-vanadium oxide nanoparticles with superior performance as a new lithium battery cathode

Ist Teil von

• Nano research, 2014-11, Vol.7 (11), p.1604-1612

Ort / Verlag

Heidelberg: Tsinghua University Press

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The main drawbacks of vanadium oxide as a cathode material are its low conductivity, low practical capacity and poor cycling stability. Adding Cr can improve its conductivity and a metastable amorphous state may provide higher capacity and stability. In this work, metastable amorphous Cr-V-O nano- particles have been successfully prepared through a facile co-precipitation reaction followed by annealing treatment. As a cathode material for lithium batteries, the metastable amorphous Cr-V-O nanoparticles exhibit high capacity （260 mAh/g at 100 mA/g between 1.5-4 V）, low capacity loss （more than 80% was retained after 200 cycles at 100 mA/g） and high rate capability （up to 3 A/g）.