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Abstract
A three-dimensional ternary Sn–Zn–Ni film was prepared by a modified chemical bath deposition method, which involved the alkaline disproportionating reaction and other redox reactions happening simultaneously. Sn was obtained by the disproportionating reaction of Sn(OH)2−4, while Zn and Ni were produced by the aid of two different kinds of reducing agents: NaBH4 and NaHPO2.H2O together. X-ray diffraction, SEM and energy dispersive X-ray spectrometry (EDS) were used to characterise the phases, morphology and composition of the films respectively. The EDS results showed that the elements of Sn, Zn and Ni could all be found in both films by optimising the deposition conditions. Ternary Sn–Zn–Ni film was deposited on copper foam for use as anode in a lithium ion battery. The electrode showed a high level capacity of ∼500 mAh g−1 with good cycle stability for 35 cycles.
This work was supported by the National Natural Science Foundation of China (grant nos. 50954005 and 51074011), National Basic Research Program of China (grant no. 2007CB936502), National 863 Program (grant nos. 2006AA03Z230 and 2008AA03Z208), and the Innovation Foundation of BUAA for PhD Graduates as well as the Scholarship Award for Excellent Doctoral Student granted by the China Ministry of Education.
