The Na-ion rechargeable battery is superior in cost because it has abundant raw materials. However, the capacity is low under the present conditions, so it is necessary to improve it for practical use. Therefore we paid attention to anode materials of the Na-ion battery, and it is considered to use tin which is high in theory capacity to improve the capacity. But, as problems of this condition, decreasing the capacity by the collision of anode materials is reported in charge and discharge. We

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... nsidered to use Ag-Sn composition alloy anode as a method to solve this problem and performed manufacture and evaluation.