Silicon composite thick film electrodeposited on a nickel micro-nanocones hierarchical structured current collector for lithium batteries

► Micro-nanocones hierarchical structure (MHS) was fabricated by electrodeposition. ► Si composite thick film was electrodeposited on MHS current collector. ► The MHS supported Si anode demonstrated outstanding Li+ storage properties. ► The unique architecture of MHS and porous Si film favor a stable cycling behavior.