Micro/Nanostructured Cathode and Anode Induced by Femtosecond Laser for Ni//Zn Battery

Abstract

In this work, bimetallic hydroxide (Ni and Co) was electrochemically deposited on femtosecond laser-induced Ni foil as aqueous rechargeable Ni//Zn battery cathode (denoted as LNF@NiCo-OH). The fs laser fabricated Zn was used as anode (denoted as LZF). The obtained Ni//Zn battery (denoted as LNF@NiCo-OH//LZF) could deliver outstanding cycling performance (no capacity decay after 20000 charge-discharge cycles), ultrahigh energy density (0.782 mW h cm−2) and power density (80.25 mW cm−2). These advantages may endow the obtained Ni//Zn battery to meet the demand of next-generation energy storage devices.