▎ 摘　　要

NOVELTY - Full-solid potassium ion selective electrode comprises electrode substrate, conductive porous graphene-molybdenum disulfide nano-sheet solid transfer layer and ion sensitive film orderly coated on electrode substrate. The electrode substrate is flexible material electrode substrate and ion sensitive membrane is potassium ion selectively membrane. USE - Full-solid potassium ion selective electrode used for growth and development of vegetable crops in facilities agriculture; used for plastic greenhouse, sunlight greenhouse, intelligent multi-span greenhouse and plant factory. ADVANTAGE - The method enables to provide full solid potassium ion selective electrode with small influence of environment, low detection limit and high detection precision, where selective electrode prepared by method has good stability, high reliability, which quickly and accurately detect potassium ion in solution; method is simple, without using wet chemical and complex operation complex method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of full solid potassium ion selective electrode, which involves: (a) dissolving precursor material of molybdenum disulfide in mixed solution of N,N-dimethyl formamide, n-butylamine and 2-amino ethanol to obtain precursor solution; (b) selecting flexible material as electrode substrate; (c) coating precursor solution on electrode substrate; (d) generating porous graphene-molybdenum disulfide solid transfer layer on electrode substrate by pulse fiber laser irradiation, and attaching on electrode substrate; (e) dipping surface modified with molybdenum disulfide electrode substrate in film mixed solution contains valinomycin tetra- potassium borate; (f) taking out, and naturally drying; and (g) activating at room temperature to obtain full solid potassium ion selective electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of preparation method of electrode.