Lithium storage properties of nanocrystalline Ni3Sn4 alloys prepared by mechanical alloying

초록

Nanocrystalline Ni<inf>3</inf>Sn<inf>4</inf> alloy powders prepared by high energy ball milling are examined as an anode for lithium-ion batteries. Ex situ X-ray diffraction (XRD) and differential capacity plots show that crystalline Ni<inf>3</inf>Sn<inf>4</inf> has a low affinity for lithium. In the case of well-developed nanocrystalline Ni<inf>3</inf>Sn<inf>4</inf>, the lithium atoms reversibly react with tin atoms in the grain boundaries with no capacity fading for extended cycling. © 2002 Elsevier Science B.V. All rights reserved.

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