Anodized Ti3SiC2 As an Anode Material for Li-ion Microbatteries.
We report on the synthesis of an anode material for Li-ion batteries by anodization of a common MAX phase, Ti3SiC2, in an aqueous electrolyte containing hydrofluoric acid (HF). The anodization led to the formation of a porous film containing anatase, a small quantity of free carbon, and silica. By varying the anodization parameters, various oxide morphologies were produced. The highest areal capacity was achieved by anodization at 60 V in an aqueous electrolyte containing 0.1 v/v HF for 3 h at room temperature. After 140 cycles performed at multiple applied current densities, an areal capacity of 380 μAh·cm(-2) (200 μA·cm(-2)) has been obtained, making this new material, free of additives and binders, a promising candidate as a negative electrode for Li-ion microbatteries.
Aix-Marseille University , CNRS, MADIREL Laboratory, UMR 7246, 13397 Marseille, France.|FR CNRS 3104, ALISTORE ERI European Res Inst , F-80039 Amiens, France.
Alexander T
AT
Tesfaye
Department of Material Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States.
Olha
O
Mashtalir
Department of Material Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States.
Michael
M
Naguib
Department of Material Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States.
Michel W
MW
Barsoum
Department of Material Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United States.
Yury
Y
Gogotsi
Aix-Marseille University , CNRS, MADIREL Laboratory, UMR 7246, 13397 Marseille, France.|FR CNRS 3104, ALISTORE ERI European Res Inst , F-80039 Amiens, France.|Ecole National Supérieure des Mines , Flexible Electronics Department, CMP, 13 541 Gardanne, France.
Thierry
T
Djenizian
Li-ion microbatteries; MAX phases; anode; anodization; porous anodized Ti3SiC2