A preparation method of a silk fibroin-based carbon nanofiber membrane applied to a lithium sulfide battery compartment

• Main Authors: HU YI, WU KESHI
• Format: Patent
• Language: Chinese; English
• Published: 18.01.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to an energy storage system device material, in particular to a preparation method of a silk fibroin-based carbon nanofiber membrane applied to a lithium sulfur battery compartment. A regenerated silk fibroin is mixed with a spinning aid such as polyethylene oxide, fully stirring, electrospun and carbonizing at high temperature are performed to obtain a silk fibroin-based nano-carbon fiber membrane. Silk-based carbon nanofibers as cathode of lithium-sulfur batteries can effectively improve the conductivity of sulfur cathode, as a negative electrode barrier can inhibit thegrowth of lithium dendrite and prevent the battery from short-circuiting. The silk fibroin-based carbon nanofiber interlayer can effectively improve the electrochemical performance of lithium sulfidebatteries. 本发明涉及储能体系器件材料，特别涉及种应用于锂硫电池隔层的丝素基纳米碳纤维膜的制备方法。本发明将再生丝素与助纺剂如聚氧化乙烯混合，充分搅拌，通过静电纺丝，高温碳化，得到丝素基纳米碳纤维膜。所制得的蚕丝基碳纳米纤维作为锂硫电池正极能有效改善硫正极的导电性，作为负极隔层能抑制锂枝晶的生长，防止电池发生短路。这种丝素基碳纳米纤维隔层能有效提高锂硫电池电化学性能。