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6 major trends In the future , the negative electrode materials of lithium batteries may be developed in six directions : 1. Energy density increases The theoretical specific capacity of new negative electrode materials such as lithium metal is as high as 3860mAh / g ，Traditional graphite negative electrode （ 372mAh / g ）Of 10 More than twice。By combining solid-state batteries with metal lithium anodes, solid-state batteries based on lithium anodes can achieve higher energy density. Domestic enterprises have released solid-state batteries based on metal lithium anodes with energy density of 400Wh / kg or more. 2. Faster charging and discharging In 2024 , the demand for 4C fast charging products for global power batteries will show an increasing trend year by year , and is expected to reach 2024 market share of 10 % . For example , Baterui 's fast charging material can achieve fast charging performance in about 10 minutes , and the low temperature performance has also been signific...

At present, the mainstream production process of lithium-ion battery separators mainly includes two kinds of "dry-form stretching process" and "wet-form (phase separation) process," which have characteristics and often combine with subsequent coating treatment to improve performance. Here are the specific processes and comparisons: ☛Previous review: What are the key quality characteristics of the diaphragm？ 01 Mainstream production processes 🌱 ❶ Dry Process （ Dry Process ） 1 Principle : Micro-holes are formed in a polymer film by physical stretching . ② Material : mainly polypropylene （ PP ） . 3 Step : 1 . Raw material mixing : PP resin is mixed with additives such as pore-forming agents . 2 . Melt extrusion : Melt at high temperature and extrude into thick sheet （ extrude into film ） . 3 . Annealing treatment : eliminate internal stress and form a hard elastic film . 4 . Unidirectional stretching : stretching along the longitudinal direction to form slit-shaped ...