A three-dimensional (3D) nanoporous Cu₆Sn₅/Cu composite is prepared by one-step dealloying of Al-Cu-Sn precursor alloy with a nominal composition of Al₁₀Cu₃Sn. The obtained Cu₆Sn₅/Cu composite shows a mixed structure of dendrite and monotectic porous structure through the horizontal and vertical directions, and both parts have interconnected 3D nanopores uniformly dispersed. When the as-prepared Cu₆Sn₅/Cu composite is explored as an anode in lithium-ion batteries, it exhibits improved cycling performance and rate capability compared with the ball-milled Cu₆Sn₅ electrode. The improved electrochemical performance could be assigned to the hierarchical porous structure which facilitates mass transport and buffers volume expansion, and the inactive Cu component in the Cu₆Sn₅/Cu composite further enhance the stability of the electrode.

通过对标称组成为Al ₁₀ Cu ₃ Sn的Al-Cu-Sn前体合金进行一步脱合金处理，制备了三维（3D）纳米多孔Cu ₆ Sn ₅ / Cu复合材料。所获得的Cu ₆ Sn ₅ / Cu复合物在水平和垂直方向上显示出枝晶和单晶多孔结构的混合结构，并且两个部分均具有均匀分散的相互连接的3D纳米孔。当将制得的Cu ₆ Sn ₅ / Cu复合材料用作锂离子电池的负极时，与球磨的Cu ₆ Sn ₅相比，它具有改善的循环性能和倍率性能电极。改善的电化学性能可归因于分层的多孔结构，该多孔的多孔结构有利于质量传递并缓冲体积膨胀，并且Cu ₆ Sn ₅ / Cu复合材料中的惰性铜组分进一步增强了电极的稳定性。