| 摘要 |
The present invention discloses a method for preparing nano-copper powder and nano-copper powder prepared by the same. The method disclosed in the present invention comprises: (1) providing a dispersion solution, the dispersion solution contains at least one copper salt precursor and at least one disperser, the disperser is dissoluble in both water and weak solvents; (2) providing a reducer dispersion solution, the reducer dispersion solution contains at least one reducer; (3) contacting the reducer dispersion solution with the dispersion solution provided by step (1) in a condition enough to reduce the copper salt precursor by the reducer into elementary copper; (4) separating copper nano-particles from reaction solution obtained by step (3), and drying separated copper nano-particles by spray drying, so as to obtain the nano-copper powder. The nano-copper powder prepared by the method in accordance with the present invention is dispersible in both water and environment-friendly weak solvents. Therefore, the obtained nano-copper powder can be used to prepare weak solvent-type electrically conductive ink and overcome the drawbacks of poor weather resisting property of water-based electrically conductive ink and severe environmental pollution of solvent-type electrically conductive ink. |
