“…29 After the phosphorization process, the diffraction peaks observed at 31.7°, 36.4° and 48.2° can be attributed to the (011), (111) and (211) planes of CoP (PDF# 29-0497). 34 The peaks at 40.8°, 41.0° and 56.3° belong to the (121), (201) and (320) planes of Co 2 P (PDF# 32-0306). 35 However, the characteristic peaks of Mn are not observed in the product of the Mn–Co precursor and Mn–Co–P which may be due to the low content or the poor crystallinity of Mn.…”