Preparation of Nano-Materials for Lithium/Nano-Ion Battery Anode and Their Energy Storage Performance in the Field of Transportation

摘要

As a typical new energy source, lithium/sodium ion batteries need high specific capacity and stable performance. A new type of negative material for lithium/sodium ion batteries is proposed. CuO-Li2O/Si nano-composites are fabricated by thermal oxidation and radio frequency magnetron sputtering as negative electrodes of batteries. At the same time, a carbon layer and a graphene layer are coated on the surface of the nano-composites, and CuO-Li2O/Si/C nano-composites and CuO-Li2O/Si/rGo nano-composites are obtained. Voltage control is applied to different nano-composites. In this way, lithium/sodium ion batteries based on different nano-composites are tested for energy storage, and the performance of the batteries is tested in the running of the vehicle. In the experimental process, the negative electrodes obtained by CuO-Li2O/Si nano-composites show better battery energy storage performance, while the energy storage performance of CuO-Li2O/Si nano-composites can be further enhanced by coating. In the process of vehicle operation, lithium/nanoion battery electrodes based on different nano-composites are fabricated for testing. The results show that CuO-Li2O/Si nano-composites can enhance the stability of lithium/nano-ion batteries. Within 1000 seconds of operation, the average energy output of the batteries keeps above 50 kW, and the output power keeps increasing gradually. At the same time, the output power of the batteries can be further enhanced by coating, which greatly exceeds the design expectation.