Nanocomposite SnO2-Se thin film as anode material for lithium-ion batteries

► In this paper, nanocomposite SnO2-Se thin film electrode was fabricated by pulsed laser deposition. ► We examined the electrochemical properties of nanocomposite SnO2-Se electrode. ► SnO2-Se/Li cells exhibited a large reversible specific capacity of about 958.8 mAh g−1. ► The reversible oxidation/reduction reaction mechanism of SnO2-Se with lithium was revealed.