\"Bipolar Separator\" appeared in the 2020 National College Entrance Examination Paper-Reprinted

\"Scientists have invented a new type of Zn-CO2 water medium battery in recent years. The schematic diagram of the battery is as follows. The electrode is metallic zinc and selective catalytic materials. During discharge, the greenhouse gas CO2 is converted into the hydrogen storage substance formic acid, etc., to solve the environment and energy. The question provides a new way.\"——Excerpt from Question 12 of the Comprehensive Chemistry of the National College Entrance Examination in 2020. A structure called \"bipolar diaphragm\" is used in the picture. What is this?

Image source: 2020 National College Entrance Examination

Bipolar membranes (BPM) is a new type of ion exchange membrane. It was proposed in the 1950s. Its membrane body can be divided into anion-exchange layer (AEL) and cation-exchange layer. , CEL) and the intermediate interface layer, the hydrolytic catalyst is sandwiched between the ion exchange polymers. Unlike traditional anion and cation exchange membranes, bipolar membranes can greatly reduce the internal resistance, while the hydrolysis products H+ and OH- can quickly migrate into the solution on both sides under the action of electric field force, which is a semi-reaction on both sides of the membrane ( For example, OER/HER) provides their ideal pH conditions. (Source: X-MOL Information)

[Research Report] Sinoma Technology's wet process capacity is expected to reach 1.4 billion ping by the end of 2020

Shengang Securities released a research report saying that after Sinoma acquired Hunan Zhongli in September 2019, it expanded its production capacity with Sinoma Lithium Films to increase the supply capacity of wet separators for lithium batteries. Sinoma Lithium Films Phase I project in Shandong Tengzhou has four production lines with an annual output of 60 million square meters, and continues to invest 1.55 billion yuan to start the second phase capacity 408 million square meters project. After completion, Sinoma Lithium Films will form 648 million flat base films and 2.4 Yiping coating film production capacity. Hunan Zhongli's original 16 lines have a total capacity of 720 million square meters of base film, and the capacity of wet-process base film in 2020 and 2021 will be increased to 960 million and 1.2 billion square meters.

Sinoma Technology’s customer structure is increasingly optimized. Domestic customers mainly target high-quality enterprises such as CATL, ATL, Yiwei Lithium Energy, and actively explore overseas markets. Hunan Zhongli focuses on the Korean market. The customers are mainly South Korean SK, LG, etc. Samsung SDI cooperates.

Shengang Securities believes that Sinoma Technology will pass the diaphragm supply chain certification cycle in the next 2-3 years, and will have a long-term stable and high-quality customer group. It is expected that the company's shipment of wet-process diaphragms will reach more than 500 million square meters in 2020 , Occupying more than 20% of the market share.

[Products] Yangzi Petrochemical successfully developed special materials for ultra-high molecular weight lithium battery separators

Up to now, the company has successfully developed a number of new products that are urgently needed in the market, such as special materials for ultra-high molecular weight lithium battery separators, polypropylene \"three high\" series products, special materials for non-woven fabrics, special materials for melt-blown fabrics, etc. Effective tens of millions of yuan.

On May 15, Yangzi Petrochemical successfully completed the first industrial production of metallocene polyethylene mPE-L F184P, and produced 400 tons of new products. It marks the company's metallocene polyethylene products are gradually serialized. (Source: Sinopec News Network)

【Think Tank Circle】Global Supply Accelerates Lithium Battery Separation Market Concentration Increases Year by Year

This week, according to foreign media reports, BMW and Sweden Northvolt signed a 2 billion euros battery supply contract. Xingyuan Material is the first Chinese diaphragm supplier to enter the Northvolt supply chain, and is expected to enter the supply chain of more multinational auto companies through downstream customers.

As the global supply of the new battery energy industry accelerates, the leading companies in the field of materials such as lithium battery separators are being further improved in terms of high-quality customer development, cost optimization, product process level, and technological innovation capabilities, and the market concentration is also increasing year by year. Promote.