Compact-stratified layer

Later Thevenin and Muller suggested several modifications to the SEI model (1) the polymer-electrolyte interphase (PEI) model in which the lithium in PC electrolyte is covered with a PEI composed of a mixture of LijCOj, P(PO),and LiClO, P(PO), is polypropylene oxide, formed by reduction-induced polymerization of PC (2) the solid-polymer-layer (SPL) model, where the surface layer is assumed to consist of solid compounds dispersed in the polymer electrolyte (3) the compact-stratified layer (CSL) — in this model the surface layer is assumed to be made of two sublayers. The first layer on the electrode surface is the SEI, while the second layer is either SEI or PEI. The first two... 

Sediments on the surface of the Earth may form in several ways (1) by mere mechanical accumulation (via wind or water), such as gravel and sand deposits in a river or sand dunes in a desert (2) by chemical precipitation, such as salt and calcite precipitation in shallow seas and lakes and (3) by activity of organisms, such as carbonate accumulation in coral reefs or the accumulation of organic matter in swamps (coal precursor). Sediments are typically deposited in layers or beds called strata. When sediments become compacted and cemented together (a process known as lithification), they form sedimentary rocks. This compaction or lithification of sedimentary materials into stratified layers is probably the most significant feature of sedimentary rocks. 

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