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Lithium iron phosphate battery: The discharge voltage of the full battery composed of graphite is about 3.2V. Excellent high-temperature performance, it is currently the best cathode material for high-temperature performance. Currently, the vast majority of Chinese lithium battery companies are producing lithium iron phosphate batteries, which have strict preparation processes, decent rate performance, and low compaction density. Invention patents are in the United States, so there may be patent issues in the future...

Lithium manganese oxide battery: Rich in manganese element reserves, lithium manganese oxide is cheap, has good rate performance, and is prone to dissolution of manganese in the electrolyte at high temperatures. It can be improved through coating treatment. Low capacity, high discharge voltage, slightly higher than the commonly used lithium cobalt oxide 3.7V. The preparation process is mature and impure due to patent issues. Japan and South Korea mainly produce lithium manganese oxide. The typical representative of China, Mengguli, is producing lithium manganese oxide batteries

The standard single lithium manganese oxide battery is 3.7V, with a maximum charging voltage of 4.3V and a minimum discharge voltage of 2V

The standard single lithium iron phosphate battery is 3.2V, with a maximum charging voltage of 3.65V and a minimum discharge voltage of 2V

A battery refers to a portion of the space in a cup, tank, or other container or composite container that contains an electrolyte solution and metal electrodes to generate electricity, and a device that can convert chemical energy into electrical energy. It can be divided into positive and negative electrodes. With the advancement of technology, batteries generally refer to small devices that can generate electricity.

1. The energy density of lithium manganese oxide batteries is higher than that of lithium iron phosphate batteries, which means that lithium manganese oxide batteries with the same capacity can have a smaller volume.

2. The cycle life of lithium manganese oxide batteries is not as good as that of lithium iron phosphate batteries, generally between 300-500 cycles, while lithium iron phosphate batteries can achieve 1800-2000 cycles. Simply put, the lifespan of lithium iron phosphate batteries with the same capacity specification is 4-5 times that of lithium manganese oxide batteries.

3. The safety of lithium manganese oxide batteries is not as good as that of lithium iron phosphate batteries.

4. The maximum single capacity of lithium manganese oxide batteries can only reach 10AH, while lithium iron phosphate can currently reach 300AH.

The temperature and environmental range of lithium manganese oxide batteries is not as wide as that of lithium iron phosphate batteries.

According to data statistics, in 2015, lithium iron phosphate batteries accounted for 69% of the total supporting amount of new energy vehicle power batteries, ternary batteries accounted for 27%, and other systems accounted for about 4%. There have been various opinions about who is the mainstream technology route for ternary, lithium iron phosphate, and lithium manganese oxide batteries in the future.

Recently, the Ministry of Industry and Information Technology held a publicity meeting on further improving the safety supervision of the promotion and application of new energy vehicles. Starting from January 1, 2017, buses using ternary batteries that have newly applied for the "Recommended Catalogue of New Energy Vehicle Promotion and Application Models" need to submit third-party inspection reports. The suspension of listing ternary lithium battery buses in the recommended model catalog for promoting and applying new energy vehicles in January this year has been lifted. After the controversy surrounding the lifting of the ban on ternary batteries, the status of ternary batteries has been pushed to a high point, sparking a new wave of competition for power battery technology routes.

In fact, many companies have started to layout ternary battery projects in the second half of 2016, such as the investment of 1.226 billion yuan by Bangpu Group to build an annual production of 35000 tons of ternary precursor projects; Smart energy increases capital by 3.114 billion yuan for Foster, expanding production of high-end ternary lithium battery production lines; Hengdian Dongci has invested 3 billion yuan in the layout of ternary lithium batteries; Greenway acquires the ternary precursor production line and collaborates with Bangpu to lay out ternary lithium batteries; Guoxuan High Tech Power ternary lithium battery.

Previously, Wang Qianjin, a big data analyst for lithium-ion batteries, predicted that ternary batteries would experience an explosive growth period due to the impact of policies such as the recently released draft of the "Standards and Conditions for the Automotive Power Battery Industry" (2017) and the online "2017 New Energy Vehicle Subsidy Adjustment Plan".

Will lithium iron phosphate, lithium manganese oxide, and ternary materials be divided into three parts in the future?

On the one hand, as the news of the lifting of the ban on ternary batteries has not been confirmed yet, and on the other hand, there are still doubts about the safety of ternary lithium batteries for electric buses, battery manufacturers are continuing to adhere to the strategic layout of lithium iron phosphate and lithium manganese oxide, while also preparing for ternary technology reserves. For a long time in the future, lithium iron phosphate, lithium manganese oxide, and ternary batteries will coexist for a long time. At the "2016 APEC Lithium New Energy Leaders Summit" hosted by lithium-ion big data, guests shared their insights and opinions on the topic of "power battery technology roadmap debate". The following are some of the highlights of the guests at this summit:

Liu Zhengyao, President of CITIC Guoan League Solid Profit Research Institute: Lithium manganese oxide and ternary belong to the same system, and ternary can be seen as an upgrade of lithium manganese oxide to a certain extent. There is no contradiction between the two. Currently, the company has started to layout in the ternary field.

Li Xinfeng, President of Guoxuan High tech Research Institute: Guoxuan High tech's ternary production line has started production. Currently, the ternary production capacity of Hefei headquarters is 2Gwh, while Qingdao Guoxuan is producing all ternary products.

Cheng Kai, Technical Director of Xingheng Power Supply: Due to its own defects, Xingheng produces super lithium manganese oxide by combining ternary with lithium manganese oxide. The company has been laying out in the ternary aspect since August and September this year. Of course, Xingheng will not give up on lithium manganese oxide, but will only follow up with the ternary aspect.

Xu Hui, Director of Watmar Battery Research Institute: Different fields have different requirements for battery performance, and the application areas of batteries will inevitably be different. At present, the company has reserves in the ternary aspect, but still focuses on lithium iron phosphate.

Previously, BYD stated that all of its current models on the market use lithium iron phosphate batteries, but the company has also been developing and reserving technology for ternary batteries. It is expected to use ternary batteries in new passenger cars launched next year. It is revealed that the company currently has a total production capacity of 10GWh in two power battery production bases in Huizhou and Kengzi. At the same time, the company is currently expanding its production capacity of 6GWh in Kengzi base and is expected to reach production next year.

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