With　the　development　of　new　energy　vehicles,　urgent　issues　have　attracted　considerable　attention.　Some　power　batteries　have　entered　the　scrapping　period　with　the　imperative　recycling　of　used　power　batteries.　Some　studies　have　predicted　that　by　2020　the　amount　of　power　lithium　battery　scrap　will　reach　32.2　GWh,　corresponding　to　~500,000　tons,　and　by　2023　the　scrap　will　reach　101　GWh,　corresponding　to　~1.16　million　tons.　In　this　study,　nickel-cobalt-lithium　LiNi0.7　Co0.3　O2　cathode　materials　are　regenerated　from　spent　lithium-ion　battery　cathode　materials　as　the　raw　material,　which　not　only　aids　in　the　reduction　of　pressure　on　the　environment　but　also　leads　to　the　recycling　of　resources.　First,　the　extraction　was　employed　using　extracting　agent　p204　to　remove　aluminum　ions　from　an　acid　leaching　solution.　The　extraction　conditions　for　aluminum　ions　were:　including　a　phase　ratio　of　1:2,　a　pH　of　3,　an　extractant　concentration　of　30%,　and　a　saponification　rate　of　70%.　Next,　the　precursor　was　prepared　by　co-precipitation　using　sodium　hydroxide　and　ammonia　water　as　the　precipitant　and　complexion　agents,　respectively;　hence,　the　cathode　material　can　be　uniformly　mixed　at　the　atomic　level.　The　precursor　and　lithium　hydroxide　were　subjected　to　calcination　at　high　temperature　using　a　high-temperature　solid-phase　method.　The　Calcination　conditions　included　an　air　atmosphere;　a　calcination　temperature　of　800　°C;　a　calcination　time　of　15　h,　an　n　(precursor):　n　(lithium　hydroxide)　ratio　of　1:1.1.　The　thermogravimetric　analysis　revealed　that　the　synthesis　temperature　should　not　exceed　850　°C.　X-ray　diffraction　analysis,　scanning　electron　microscopy,　and　energy　spectrum　analysis　of　the　cathode　material　revealed　a　composition　comprising　Li,　Ni,　and　Co　oxides.　After　analysis,　the　material　obtained　is　lithium　nickel-cobalt-oxide,　LiNi0.7　Co0.3　O2,　which　is　a　positive　electrode　material　with　good　crystallinity　and　a　regular　layered　structure.　©　2019　Trans　Tech　Publications,　Switzerland.