Fig. 2From: Transformation of sludge Si to nano-Si/SiOx structure by oxygen inward diffusion as precursor for high performance anodes in lithium ion batteriesSi 2p XPS spectra (dash line) and their deconvolution fitting into five chemical states (from Si0 to Si4+, color lines) of the Si 2p for Si sludge in a and nano-Si/SiOx sample in b, respectivelyBack to article page