An inverse opal Cu2Nb34O87 anode for high-performance Li+ storage†
Abstract
Cu2Nb34O87 with an inverse opal morphology is fabricated, showing highly-ordered macropores with sizes of ∼170 nm and walls with thicknesses of 20–30 nm. This first-reported Cu2Nb34O87 nanomaterial exhibits good Li+-storage properties, including a large capacity, safe operating potential, large initial coulombic efficiency, high rate performance and good cycling stability.