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. 2016 May 17;6:25771. doi: 10.1038/srep25771

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Typical FESEM images of (a,b) PNM-NCM at different magnifications; (c) EDS mappings of oxygen, manganese, nickel and cobalt; (d–f) TEM and HR-TEM images of PNM-NCM; (g) the pore size distribution, and N₂ adsorption/desorption isotherms of PNM-NCM; (h) EDS spectrum and results of PNM-NCM microspheres.