ABSTRACT
The zinc–nickel single flow battery (ZNB) is a promising energy storage device for improving the reliability and overall use of renewable energies because of its advantages: a simple structure (no membrane), low cost, and high energy density. The anode is a zinc electrode with high electrode potential (Zn(OH)4 2-/Zn, 1.215 V vs. SHE, standard hydrogen electrode), which is widely used in zinc-based batteries. The cathode is a nickel hydroxide/nickel oxyhydroxide electrode (NiOOH/Ni(OH)2, 0.49 V vs. SHE) that is widely employed in Ni–Cd and Ni–MH batteries. In this chapter, we mainly introduce the principle, research progress, and challenges of the ZNB.
