fig1

Figure 1. Examples of Ni-layered double hydroxide catalysts. (A) Scheme of synthesis of the Ultrathin NiMn-LDH/CFC; (B) Corresponding Tafel slopes; (C) UOR stability evaluates the U-NiMn-LDH/CFC; (D) Multi-current process acquired with the U-NiMn-LDH/CFC catalyst; (E) CV curves of U-NiMn-LDH/CFC and B-NiMn-LDH; (F) XRD patterns of U-NiMn-LDH/CFC before and after long-term stability test of UOR and OER; (G) Mn 2p in U-NiMn-LDH/CFC before and after long-term durability tests of UOR and OER^[81]. This figure is quoted with permission from Liu et al. LDH: Layered double hydroxides; CFC: carbon fiber cloth; UOR: urea oxidation reaction; CV: cyclic voltammetry; XRD: X-ray diffraction; OER: oxygen evolution reaction.