Details

Autor(en) / Beteiligte

• Penin, N.
• Rougier, A.
• Laffont, L.
• Poizot, P.
• Tarascon, J.-M.

Titel

Improved cyclability by tungsten addition in electrochromic NiO thin films

Ist Teil von

• Solar energy materials and solar cells, 2006-03, Vol.90 (4), p.422-433

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Aiming at improving the electrochromic properties of NiO thin films, well-known as anodic counter electrodes, the effect of tungsten addition was investigated. Ni–W–O thin films were deposited by pulsed laser deposition in optimized conditions, namely a 10 −1 mbar oxygen pressure and a room temperature substrate. The presence of W led to a progressive film amorphization. An increase in cyclability for Ni–W–O (5% t WO 3) electrode, cycled in KOH 1 M electrolyte, was associated with a limited dissolution of the oxidized phases with tungsten addition. HRTEM investigations of cycled films revealed that the stabilization is correlated to the existence of an α(II) hydroxide phase.