Electrochemical energy storage includes lead-acid batteries, lithium-ion batteries, sodium-sulfur batteries, and flow batteries. (1) Lead-acid battery: It is a battery whose electrode is mainly made of lead and its oxide, and the electrolyte is a sulfuric acid solution. It is widely used in the world, with a cycle life of about 1000 times, efficiency of 80%-90%, [...]
Electrical energy storage mainly includes supercapacitor energy storage and superconducting energy storage (SMES) (1) Supercapacitor energy storage: an electric double layer structure composed of an activated carbon porous electrode and an electrolyte is used to obtain an extremely large capacitance. Unlike batteries that utilize chemical reactions, the charging and discharging process of supercapacitors is always a [...]
Mechanical energy storage mainly includes pumped storage, compressed air energy storage and flywheel energy storage. (1) Pumped storage: When the grid is low, the excess power is used as the liquid energy medium. The water from the low-lying reservoir is pumped to the high-lying reservoir. When the grid peaks, the water in the high-lying reservoir returns [...]
On August 2nd, China Nonferrous Metals Industry Association organized an expert meeting on scientific and technological achievements in Kunming, Yunnan Province, and completed the "electrolytic aluminum overhaul slag" jointly completed by Zhengzhou Hongyue Environmental Protection Technology Co., Ltd., Hunan Zhongda Metallurgical Design Co., Ltd. and Zhengzhou University of Light Industry. The method of acid-free treatment and [...]
Cost increases, new capacity slows down, electrolytic aluminum stocks continue to decline On July 30, Shanghai Nonferrous Metals Network data showed that the total inventory of aluminum ingots in consumption was 1.78 million tons, down 15,000 tons from last Thursday. According to industry insiders, electrolytic aluminum inventories continue to fall, aggregate supply is limited, cost support [...]