▎ 摘　　要

NOVELTY - Two-dimensional transition metal boride of MxBy-Tz, is new. USE - Two-dimensional transition metal boride is used as energy storage electrode material of lithium battery, sodium battery, potassium battery, aluminium battery, zinc battery, magnesium battery, water decomposition hydrogen production, fuel battery, super capacitor or solar battery (all claimed). ADVANTAGE - The boride is good for the transmission of the ions in the energy storage device, it has catalytic function, and has good fixing effect to the active substance. The lithium battery prepared by the material has very high peak current, and the voltage difference between the oxidation peak and the reduction peak is small, which indicates that it has good catalytic functions. It has simple production technique, easy material, obtain cost, convenient for large-scale industrial application, has good circulation stability, high safety, and high-sulphur load and stable circulation 1000 ring under the large current charging and discharging condition. DETAILED DESCRIPTION - Two-dimensional transition metal boride MxBy-Tz (1), is new. M = scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, cadmium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, and/or mercury; B = boron element; T = functional group on the surface of metal boride material; x = 1-5; y = 1-5; and z = 1-5. An INDEPENDENT CLAIM is included for the preparation method of new two-dimensional transition metal boride.