fig7

Figure 7. (A) Preparation diagram of Ni(Fe)(OH)2-FeSx electrode; (B) Raman spectra of corrosion-formed products; (C) Free energy diagram of corrosion-formed products; (D) CV profiles of different electrodes[77]. Reproduced under the terms of the Creative Commons Attribution License; (E) Microbial corrosion synthesis of Ni-Fe hydroxide/NF; (F) Microbial reduction synthesis of Ni NPs/NF; (G) Polarization curves of Fe3+/bNF, Fe2+/bNF, Ni2+/bNF, Fe3+/NF, Fe3+/bNF*, bNF, and NF. Reproduced with permission[79]. Copyright 2024, Elsevier. CV: Cyclic voltammetry; NF: nickel foam; bNF: bio-treated nickel foam.