Abstract: A battery material includes: a conductive substrate; and a silicon material layer disposed on at least one side of the conductive substrate and including silicon fibers, at least some of which aggregate to form silicon fibrous spheres. A preparation method for the battery material includes: (a) providing a conductive substrate; (b) providing a silicon-based material, followed by depositing on a surface of the silicon-based material a film comprising amorphous silicon or crystalline silicon to form a silicon source material; (c) placing the silicon source material of step (b) on at least a side of the conductive substrate of step (a), wherein the distance between the conductive substrate and the silicon source material is less than 100 mm; and (d) heating the conductive substrate and silicon source material thus arranged in step (c) to allow the silicon source material to release amorphous silicon or crystalline silicon.

Abstract: A photovoltaic cell module configured to convert energy of light into electric energy is provided. The photovoltaic cell module includes photovoltaic cells and at least one bus element. A first electrode of one of the photovoltaic cells is electrically connected to another of the photovoltaic cells through the bus element. Each photovoltaic cell includes a first-type semiconductor layer, a second-type semiconductor layer, and a first electrode. The second-type semiconductor layer has an interface in contact with the first-type semiconductor layer. The first-type semiconductor layer is located between the first electrode and the second-type semiconductor layer. The light enters each photovoltaic cell along a direction from the first electrode to the interface. The first electrode includes first and second electricity-collecting portions which cross with each other and belong to a single film layer. A method of fabricating a photovoltaic cell module and a photovoltaic cell are also provided.