Dual-active engineering of NiFe LDHs nanosheets with anion intercalation and oxygen vacancy for high-performance aqueous nickel-zinc batteries

Abstract

Herein, 1,3,5-benzenetricarboxylate (BTC) intercalation and oxygen vacancy engineering is proposed to enhance the electrochemical performance of layered double hydroxides (LDHs) nanosheets. The optimized LDH exhibits a remarkable capacity of 426 mAh g⁻¹ at 3 A g⁻¹ and 70% capacity retention after 15,000 cycles, attributed to improved ion transport, abundant active sites, and structural stability.