Novel LaBO3 hollow nanospheres of size 34 ± 2 nm templated by polymeric micelles

► Poly(styrene-b-acrylic acid-b-ethylene oxide) forms micelles with core-shell-corona architecture. ► The shell block with COO− ions effectively produce LaBO3 hollow nanospheres under mild conditions. ► The LaBO3 hollow nanosphere is reported for the first time using soft template of polymeric micelles. ► Till date no methods are available for synthesis of LaBO3 hollow nanospheres. ► The LaBO3 hollow nanosphere exhibit high charge/discharge cycling performance in lithium-ion rechargeable batteries.