硝酸体系中用电化学法氧化或还原U、Pu是核燃料后处理“无盐”技术中对U、Pu调价以实现分离和回收它们的重要步骤之一。由于电解过程中可能同时发生HNO_3的阴极还原并生成能与U、Pu发生次级化学反应的化学活性产物(HNO_2、NO_x),从 Electrochemical oxidation or reduction of U and Pu in nitric acid systems is one of the important steps in the nuclear fuel reprocessing “salt-free ” technology to price U and Pu for separation and recovery. As the cathode of HNO_3 may be simultaneously reduced during the electrolysis process and the chemical active products (HNO_2, NO_x) which can undergo secondary chemical reaction with U and Pu are generated,