fig9

Figure 9. (A) Galvanostatic charge and discharge curves of MnHCF in the initial 10 cycles at C/20; (B) corresponding Fourier transforms (FTs); (C) ex-situ XANES of MnHCF powder and the prepared electrodes at the Fe K-edge; (D) cycling performance of ZnHCF at C/5 rate[105]. Copyright 2021, Elsevier.