Against the backdrop of global green transformation, China’s new energy vehicle industry has achieved leapfrog development. However, with the rapid growth of the industry, the amount of retired power batteries has exceeded 1 million tons in 2024, and a "retirement wave" has quietly arrived. Improper handling of scrapped batteries will not only waste valuable metal resources but also may cause severe environmental pollution. Traditional battery recycling processes (such as pyrometallurgy) generally have problems like high energy consumption, high pollution, and poor metal selectivity, making it difficult to meet the requirements of green development. At this critical juncture, Sodium Persulfate, as a green oxidant, has become the "green key" to solving the problems of power battery recycling with its unique advantages.
Ⅰ. Core Characteristics of Sodium Persulfate
Unique Chemical Properties
Sodium Persulfate has strong oxidizing properties and can act precisely on target substances in specific reactions, providing key support for subsequent metal extraction and other links. At the same time, it also has the advantage of environmental friendliness—its main decomposition products after reaction are sodium sulfate and oxygen, with no persistent residues, which meets the requirements of green recycling. As a "National-Level Green Factory", Fujian ZhanHua Chemical relies on advanced production technology and a strict quality control system to produce Sodium Persulfate with a purity of ≥99%, iron impurities of ≤5ppm, and stable oxidizing performance (purity and metal ion content can be customized exclusively). In the complex chemical environment of battery recycling, this product can efficiently drive metal extraction, reduce side reactions, and ensure the entire recycling process is efficient and accurate, fully demonstrating the application advantages of Sodium Persulfate in the field of battery recycling.
Core Force Assisting Battery Recycling
Power batteries contain high-value metal resources such as lithium, cobalt, and nickel. Through its strong oxidizing properties, Sodium Persulfate can effectively oxidize metal compounds in battery cathode materials, dissolving them in solution in the form of ions; after matching with pH adjustment or complexing agents, it can achieve efficient and selective separation of metals. This solves the problems of low metal separation efficiency and insufficient purity in traditional processes, and also provides a new way for the efficient recycling of these valuable resources. As a professional persulfate manufacturer, Fujian ZhanHua Chemical has an annual output of 50,000 tons of Sodium Persulfate, with excellent production capacity, and has hazardous chemical warehouses in Dongguan, Wuhan, Chengdu, and Suzhou to ensure stable market supply. Through a strict quality control system, product indicators meet high industry standards, which can meet the strict requirements of battery recycling enterprises for raw material quality.
Ⅱ. Decoding the "Green Key": Recycling Mechanism of Sodium Persulfate
The reason why Sodium Persulfate can become the "green key" for power battery recycling lies in its realization of efficient and green extraction of metal resources through precise chemical reactions.
For common lithium iron phosphate batteries, lithium has important recycling value. Under normal temperature and acidic conditions (pH 2-3), Sodium Persulfate can oxidize divalent iron (Fe²⁺) in lithium iron phosphate to trivalent iron (Fe³⁺), thereby destroying the original crystal structure, promoting the release of lithium ions into the solution, and realizing the selective leaching of lithium. This process is similar to "screening", enabling efficient separation of lithium and laying a foundation for subsequent purification and reuse.
For ternary lithium batteries (commonly used cathode material is lithium nickel cobalt manganese oxide), under activation conditions, Sodium Persulfate can generate sulfate radicals (SO₄·⁻). These radicals can effectively destroy the crystal structure of ternary materials and promote the dissolution of metals such as nickel, cobalt, and manganese. By reasonably adjusting reaction conditions, the leaching efficiency of each metal ion can be precisely controlled to achieve efficient separation, while avoiding the introduction of impurities and ensuring the purity of recycled metals, providing a solid foundation for their reuse in battery production and other fields.
The entire recycling process does not require high-temperature treatment like pyrometallurgy, resulting in a significant reduction in energy consumption; it also does not produce a large amount of polluting waste—waste liquid can be discharged up to standard after neutralization and precipitation treatment, and the amount of solid waste is less than that of pyrometallurgy. It not only overcomes many pain points of traditional processes but also realizes a green and efficient process, fully embodying the core value of Sodium Persulfate as the "green key". With its strong production capacity, stable product quality, and continuous innovation spirit, Fujian ZhanHua Chemical provides a solid guarantee for the wide application of Sodium Persulfate in the field of battery recycling.