2中對(duì)金屬氧化物和石墨進(jìn)行電脫氧，制備了具有面心立方結(jié)構(gòu)的納米級(jí)(VNbTaZrHf)C高熵碳化物（HEC）粉末。適當(dāng)?shù)臏囟葪l件有利于抑制HEC顆粒的原位燒結(jié)生長(zhǎng)。在1 mol/L KOH溶液中進(jìn)行了電化學(xué)性能測(cè)試，探索(VNbTaZrHf)C HEC的催化性能。通過(guò)極化曲線(xiàn)、Tafel斜率、電化學(xué)阻抗譜和雙層電容值CV測(cè)試評(píng)估了(VNbTaZrHf)C HEC的催化析氫反應(yīng)（HER）性能。結(jié)果表明，(VNbTaZrHf)C HEC的雙層電容值為40.6 mF/cm2。雙層電容值越大，表明電化學(xué)活性表面積越大。由于(VNbTaZrHf)C HEC的高熵效應(yīng)和納米級(jí)結(jié)構(gòu)，它表現(xiàn)出優(yōu)異的催化HER性能，并為通過(guò)熔鹽電脫氧制備HECs提供了新方法。;The nanoscale (VNbTaZrHf)C high-entropy carbide (HEC) powders with face-centered cubic structure were prepared by electro-deoxidation of metal oxides and graphite in CaCl2 at 1173 K. Appropriate temperature conditions are favorable for suppressing the in-situ sintering growth of HEC particles. Electrochemical performance tests were conducted in 1 mol/L KOH solution to investigate the catalytic performance of (VNbTaZrHf)C HEC. The catalytic performance of (VNbTaZrHf)C HEC for hydrogen evolution reaction (HER) was evaluated through polarization curves, Tafel slope, electrochemical impedance spectroscopy, and double-layer capacitance value cyclic voltammetry tests. Results show that the double-layer capacitance value of (VZrHfNbTa)C HEC is 40.6 mF/cm2. The larger the double-layer capacitance value, the larger the electrochemically active surface area. Due to the high-entropy effect and nanoscale structure of (VNbTaZrHf)C HEC, it exhibits superior catalytic performance to HER. This research provides a novel method for the preparation of HECs via molten salt electro-deoxidation."/>