3D interconnected SnO2-coated Cu foam as a high-performance anode for lithium-ion battery applications

A SnO2-coated Cu foam with 3D interconnected scaffold was fabricated by a simple sol–gel method for use as a self-supporting anode for lithium-ion batteries. The binder- and carbon-free electrode integrated with a current collector exhibits a high reversible capacity, excellent rate capability, and stable cycle retention by preserving its structural integrity.