▎ 摘　　要

NOVELTY - Preparing reference electrode pole piece for rechargeable battery comprises (a) mixing the agglomerant and conductive agent to obtain a conductive paste, (b) adding reference electrode active material, and mixing to obtain an electrode slurry, (c) coating the slurry on the current collector, drying, cutting and welding the electrode ear wire to obtain the first electrode sheet, (d) providing the electrode sheet as the cathode, metal lithium or sodium as the anode, assembling as half battery, and (e) charging and discharging the battery, disassembling the half battery, and removing out cathode sheet as the reference electrode pole piece. USE - The method is useful for preparing reference electrode pole piece, which is useful for rechargeable battery, and also useful in 3C consumer electronics, electric automobile, energy storage, aerospace, flexible device, and biological medical treatment. ADVANTAGE - The method uses chargeable battery for monitoring, researches performance characteristics of the working electrode and counter electrode under different working conditions and failure mechanism, improves development efficiency of material screening and battery technology, does not introduce complex technical process, and has low cost and large scale manufacturing feasibility. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a rechargeable battery using active material layer of the working electrode sheet comprising a cathode active material containing an alkali metal element, the cathode active material comprises an AMO2 structure compound having an α-NaFeO2 structure and/or commercial cathode active material capable of reversibly storing lithium, where A comprises at least one of lithium, sodium, potassium and magnesium, and M is at least one of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, niobium and molybdenum, and the commercial positive active material comprises at least two of spinel-structured lithium manganese oxide, spinel-structured lithium nickel manganese, spinel-structured lithium-nickel-manganese-oxygen doped coating modified compound, lithium-cobalt-oxygen with layered structure, lithium cobalt oxygen doping and coating modified compounds with layered structure, sodium nickel iron manganese oxygen with layered structure and its doping and coating modified compounds, lithium nickel cobalt manganese oxygen with layered structure, lithium nickel cobalt manganese oxygen doping and coating modified compounds with layered structure, lithium iron phosphate with olivine structure or lithium iron phosphate doping and coating modified compounds with olivine structure. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of rechargeable battery.