Lithium-supplement layer and its negative electrode sheet, lithium ion battery and device

A lithium-supplement negative electrode sheet, comprising:

• a current collector;
• a diaphragm, located on the current collector and comprising an active substance, an adhesive and a conductive agent;
• and
• a lithium-supplement layer comprising:
• a transition layer on the diaphragm, wherein the transition layer is one or more selected from Li2O, LixC, and Lix1Siy, wherein, 0<x≤2, 0<x1≤4.4, 0≤y2;
• an oxide layer on the transition layer, wherein the oxide layer is a lithium source selected from the group consisting of Li metal, Li2O, LiF, LiOH, Li3N, Li2CO3, or any combinations thereof;
• and
• a surface layer on the oxide layer, wherein the surface layer contains an organic material and a filling substance, the organic material is one or more selected from stearic acid, 12-hydroxystearic acid, fatty acid metal salt, polyglycol, polyhydrocarbon cyclopentane, polyisobutyl methacrylate, phosphate ester, paraffin, polyurea, poly a-olefins, alkyl naphthalene, and polydimethylsiloxane, and the filling substance is one or more selected from graphite, graphene, aluminum oxide, sodium hydroxide, lithium hydroxide, calcium hydroxide and molybdenum disulfide.