Maxine nanosheet hybrid composite, manufacturing method thereof, and electrochemical catalyst including same

Abstract

An embodiment may provide a metal-positive ion-MXene nanosheet hybrid composite. According to the embodiment, by providing a hybrid composite composed of metal particles/positive ions/MXene nanosheets, there is a feature that may provide a hydrogen evolution reaction catalyst having excellent electrochemical performance with a high current value and low overvoltage.

1 . A MXene nanosheet hybrid composite, comprising:
 a Mn+1AnTx MXene nanosheet;   positive ions stacked on the Mn+1AnTx MXene nanosheet; and   metal particles uniformly distributed on the Mn+1AnTx MXene nanosheet,   wherein   the M is at least one transition metal selected from Sc, Y, Lu, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W,   the A is carbon (C), nitrogen (N) or a combination thereof,   the Tx is oxide (O), epoxide, hydroxide (OH), alkoxide having a number of carbon atoms in a range of 1 to 5, fluoride (F), chloride (Cl), bromide (Br), iodide (I), or a combination thereof, and   the n is 1, 2 or 3.   
     
     
         2 . The MXene nanosheet hybrid composite of  claim 1 , wherein
 each of the positive ions is selected from a group consisting of H+, Li+, Na+, K+, Rb+, Cs+, Al3+, V3+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, and Y3+.   
     
     
         3 . The MXene nanosheet hybrid composite of  claim 1 , wherein
 the metal particles include at least one of ruthenium (Ru), platinum (Pt), gold (Au), rhodium (Rh), palladium (Pd), or iridium (Ir).   
     
     
         4 . The MXene nanosheet hybrid composite of  claim 1 , wherein
 the MXene nanosheet hybrid composite exhibits a porous two-dimensional nanosheet form.   
     
     
         5 . A method for manufacturing a MXene nanosheet hybrid composite, the method comprising:
 preparing an Mn+1AnTx MXene nanosheet;   exfoliating the Mn+1AnTx MXene nanosheet and stacking positive ions; and   manufacturing a MXene nanosheet hybrid composite by reacting the Mn+1AnTx MXene nanosheet, where the positive ions are stacked, with a metal precursor solution,   wherein   the M is at least one transition metal selected from Sc, Y, Lu, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W,   the A is carbon (C), nitrogen (N) or a combination thereof,   the Tx is oxide (O), epoxide, hydroxide (OH), alkoxide having a number of carbon atoms in a range of 1 to 5, fluoride (F), chloride (Cl), bromide (Br), iodide (I), or a combination thereof, and   the n is 1, 2 or 3.   
     
     
         6 . The method of  claim 5 , wherein
 the preparing the Mn+1AnTx MXene nanosheet is performed by removing a B layer from an inorganic compound having an Mn+1BAn composition, and   the B layer includes at least one selected from Al, Si, P, S, Ga, Ge, As, Cd, In, Sn, Tl and Pb.   
     
     
         7 . The method of  claim 5 , wherein
 each of the positive ions is selected from a group consisting of H+, Li+, Na+, K+, Rb+, Cs+, Al3+, V3+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, and Y3+.   
     
     
         8 . The method of  claim 5 , wherein
 the metal precursor solution includes at least one of ruthenium (Ru), platinum (Pt), gold (Au), rhodium (Rh), palladium (Pd); or iridium (Ir).   
     
     
         9 . The method of  claim 5 , wherein
 in the exfoliating the Mn+1AnTx MXene nanosheet and the stacking the positive ions,   the Mn+1AnTx MXene nanosheet has a negative charge on at least one surface, allowing the stacking to be made while an interlayer distance is controlled through electrostatic attraction with the positive ions.   
     
     
         10 . An electrochemical catalyst, comprising the MXene nanosheet hybrid composite according to  claim 1 .