▎ 摘　　要

NOVELTY - The method involves soaking a graphite fiber in liquid acid solution. Oxidation reaction operation of the soaked graphite fiber is performed at temperature of about less than 65-100 degrees centigrade for about 8-32 hours. Graphene oxide/graphite fiber composite structure electrode material is taken out. Graphene oxide/graphite fiber composite structure electrode material cleaning and drying processes are performed to obtain a desired product. The liquid acid solution is selected from one of concentrated sulfuric acid, potassium permanganate acid, concentrated nitric acid and phosphoric acid. USE - Method for preparing graphene oxide/graphite fiber composite structure electrode material of an electrochemical biological sensor (claimed). ADVANTAGE - The method enables improving micro-nano electrode sensitivity and stability and electrode detecting reliability and simplifying graphene oxide/graphite fiber composite structure electrode material preparing process with wide range of applications. The method enables directly peeling an oxidized graphite alkene lamellar graphite fiber surface so as to reduce peeling surface area. The method enables reducing electrode material preparing and assembling difficulties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene oxide/graphite fiber composite structure manufacturing method. DESCRIPTION OF DRAWING(S) - The drawing shows a photographic view illustrating a method for preparing graphene oxide/graphite fiber composite structure electrode material of an electrochemical biological sensor.