Details

Autor(en) / Beteiligte

• Du, Ke
• Zhu, Jinyou
• Hu, Guorong
• Gao, Hongcai
• Li, Yutao
• Goodenough, John B

Titel

Exploring reversible oxidation of oxygen in a manganese oxide

Ist Teil von

• Energy & environmental science, 2016-08, Vol.9 (8), p.2575-2577

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nominal Na 0.6 (Li 0.2 Mn 0.8 )O 2 with the layered P3 structure (s.g. R 3 m ) showed XPS evidence of holes in the O-2p bands on removal of Na + ions. A large voltage plateau at 4.1 V versus Na + /Na faded significantly over 50 cycles although the capacity in the range 20 ≤ V < 4.5 V remained unchanged. Oxidation of the O-2p bands is not reversible. Oxidation of layered P3-Na 0.6 (Li 0.2 Mn 0.8 )O 2 by electrochemical removal of Na + introduces holes into the O-2p bands at 4.2 V, but the voltage plateau fades on cycling.