Study on the preparation of ascorbic acid reduced ultrafine copper powders in the presence of different protectants and the properties of copper powders based on methionine protection

By regulating the one-step secondary reduction process (Cu( ii ) → CuCl( i ) → Cu 2 O( i ) → Cu(0)) is used to slow down the reaction rate and obtain high-performance ultrafine copper powder protected by methionine (Met).