Lithium titanate batteries will be "triple standing" with ternary and lithium iron?

Recently, Gree Electric acquired Zhuhai Yinlong New Energy Co., Ltd.(hereinafter referred to as "Zhuhai Yinlong") for 13 billion yuan and attracted widespread attention from the society. For the deal, many media and securities analysts thought Gree was "overpriced", but Dongmingzhu, chairman of Gree Electric, said Gree focused on Zhuhai Yinlong's lithium titanate battery technology.

Lithium titanate batteries are not new to the industry, but because the industry leaders BYD and Tesla are advocates of lithium iron phosphate batteries and lithium ternary batteries, respectively. In recent years, lithium titanate batteries have been regarded as "non-mainstream" lithium batteries in the industry. So, this time lithium-titanate batteries can be in the power of grid electric "popular"?

Fast recharging batteries for "zero tension" materials

Lithium titanate batteries, often referred to in the industry, are lithium ion secondary batteries with lithium titanate as a negative electrode material for lithium ion batteries and 2.4 V or 1.9 V of lithium manganate, ternary material, or lithium iron phosphate. In fact, lithium titanate can also be used as a lithium secondary battery with a positive electrode and a metal lithium or lithium alloy negative electrode of 1.5 v.

Regardless of whether it is a positive or a negative electrode, lithium titanate batteries have characteristics such as "lto spinel structure", "zero strain", and "large ion diffusion coefficient". It has advantages such as good recycling performance, high safety, high rate of charge and discharge, and wide high and low temperature performance. However, at the same time, lithium titanate batteries have small unit volume capacity(low vibration density) and high cost disadvantages.

Previously, due to the shortcomings of lithium titanate batteries, BYD Chairman Wang Chuanfu expressed a negative attitude toward lithium titanate batteries. Wang Chuanfu believes that lithium titanate batteries may be available in local areas, especially at very low temperatures, but it also needs to "practice internal work."

However, in recent years, the performance of lithium titanate batteries has been constantly improving news. According to media reports, a Sichuan company is developing a lithium battery with a positive nickel manganese material and a negative electrode with lithium titanate. After the success, the energy density of lithium titanate batteries can reach 120-130wh / kg.

In 2011, Zhuhai Yinlong acquired the world's advanced manufacturer of lithium titanate battery materials, the United States Oteri Nano Technology Co., Ltd., after which the lithium titanate battery became Zhuhai Yinlong's "home". According to Zhuhai Yinlong, its lithium titanate battery technology has overcome the five major difficulties recognized by the industry as "safety", "consistency", "rapid charging and discharge", "life span" and "industrialization". The product not only has 6 minutes of fast charging, wide temperature(-50 °C-+60 °C), 30 years of circular service life, no fire, no explosion, high safety and high efficiency performance advantages, but also the cost is constantly declining, the ability density is constantly increasing.

Geli Electric is very optimistic about Zhuhai Yinlong's lithium titanate battery technology. Dongmingzhu publicly praised Zhuhai Yinlong as "buried gold in the sand", which actually refers to Zhuhai Yinlong's lithium titanate battery technology.

Wide application prospects

The application of lithium titanate technology in electric passenger cars has already had a good example. Since April 2011, the 689 and 687 pure electric buses using micro-macrodynamic lithium titanate battery technology have been put into operation in Chongqing. The electric bus can complete charging within ten minutes and the overall performance is excellent. Micromacro's lithium titanate battery also went abroad and used London's hybrid double-decker bus(NBfL). As of March 2016, 10,000 commercially operated vehicles were equipped with lithium titanate battery systems, with an operating mileage of 620 million kilometers, maintaining a record of zero accidents in operational safety.

Dongmingzhu believes that after combining the advantages of Gree Electric, lithium titanate battery technology will have a wide market prospects in new energy vehicles and energy storage.

In the field of new energy vehicles, lithium titanate batteries and grid electric appliances, smart manufacturing, motors, precision molds and other technologies can produce huge synergies, in the "small three electric"(electric air-conditioning, electric steering, electric braking) will also form complementary.

Based on the safety of batteries and the long cycle life, Dongmingzhu believes that lithium titanate battery technology is also a promising market in the energy storage field. "In particular, energy storage equipment, instead of diesel engines, can make full use of gluten power to reduce costs, bring stability to all appliances in the home, and operate at low pressure. If all the buildings in China use new electricity reserves, plus photovoltaics, it's a trillion-dollar market. "Dongmingzhu said.

According to media analysis, Dongmingzhu will use the lithium titanate battery technology "dug over" from Zhuhai Yinlong in Geli's air-conditioning. The future of Gree's development strategy is likely to be the construction of a home energy storage center.

According to media reports, lithium titanate batteries with lithium manganate as a positive material have been applied to environmental protection and green lighting systems with complementary scenery. The traditional solar street lamp lithium batteries used for power storage are replaced every two years, and the service life of lithium titanate batteries can reach 15 years.

Those in the industry who are optimistic about lithium titanate batteries expect that within 3-5 years, lithium titanate batteries will develop rapidly, and together with lithium ternary batteries and lithium iron phosphate batteries, they will form a "three-step" situation in the power lithium battery market.

The page contains the contents of the machine translation.