1 Hunan Hengping New Material Technology Co., Ltd. 2. Xinxiang Huaxin Power Materials Co., Ltd. 3. Shenyang Aircraft Research Institute Powder Company 4. Shenzhen Huanyu Lithium Iron Phosphate Electric Battery Factory 5. Shenzhen Shanmu Battery Technology Co.., Ltd. 6.Dongguan Chineng Electronic Technology Co., Ltd. 7. Ansai Lithium Energy (Hefei) Co., Ltd. 8. Beijing Zhongke Guofa Science and Technology Co., Ltd. 9. Guangzhou Yuntong Magnetoelectric Co., Ltd. 10. Company Yunnan Yuxi Huilong Technology Co., Ltd. 11. Shandong Shengong Haite Electronic Technology Co., Ltd. 12. Hangzhou Jinma Energy Technology Co., Ltd. 13. Shenzhen Haiyineng Technology Co., Ltd. Lithium Technology Co., Ltd. 15. Dongyang Huiju Battery Co., Ltd. 16. Xingyang Xinyuan Chemical Co., Ltd. 17. Guangzhou Liyun New Energy Technology Co., Ltd. 19. Xinxiang Chuangjia Power Materials Co., Ltd. 20. Linyi Jieneng New Energy Materials Co., Ltd. 21. Tianjin Baineng Lithium Battery Materials Co., Ltd. 22.Shenzhen Chang Taixin Electronic Technology Co., Ltd. Hengtai Battery Co., Ltd. 24. Henan Ricoh New Energy Technology Co., Ltd. 25. Shenzhen Xinyujia Communication Electronics Co., Ltd. 26. Shanghai Shenshi Battery Technology Co., Ltd. Ltd.
Lithium iron phosphate performance
Yunnan Yuxi Huilong technology has lithium iron phosphate battery Huilong lithium iron phosphate battery
The lithium iron phosphate positive material produced by Yunnan Huilong is based on its own unique process technology of high-performance lithium spinel manganate, special geographical environment and the rich in manganese, iron, phosphorus and other natural materials of the metal kingdom, mineral resources, olivine lithium iron phosphate (LiFePO4) positive. quality material after years of careful research and development. We have created an environmentally friendly material that is the least expensive and offersbetter overall performance than materials from other manufacturers. Its advantages are high gram capacity, high powder conductivity, good cycle stability and low price, it is used to prepare pole pieces; adhesives. The quantity is small (3~4%), the lithium iron phosphate content can reach 94%, and the processing performance is good. High capacity, high output voltage, good charge and discharge cycle performance, stable output voltage, capable of large current charge and discharge, stable electrochemical performance, safe to use (will not cause burn or damage due to improper operation such as overcharge, overdischarge, short circuit, explosion etc.), wide operating temperature range, non-toxic or less toxic, and no pollution to the environment. Lithium iron phosphate batteries using LiFePO4 as positive electrodemeet these performance requirements, especially in terms of high discharge rate (5-20°C discharge), stable discharge voltage, safety (no combustion, no explosion) and service life ( number of cycles), no pollution to the environment, it is the best, and it is currently the best positive material for high current power batteries.
Under 100% DOD conditions, it can be charged and discharged more than 2,000 times; (Reason: Lithium iron phosphate lattice has good stability and lithium ion intercalation. Input and output have little effect on the crystal lattice, making it have good reversibility. The disadvantage is that the electrode has poor ionic conductivity and is not suitable for charging and discharging large currents, which hinders its application Solution: Coat the electrode surface with conductive materials and dope to modify. the electrode. )
The lifespan of lithium iron phosphate batteries is closely related to its operating temperature. If the operating temperature is too low or too high, it will cause great hidden dangers in its charging, discharging and discharging processes. 'use. Especially when used in electric vehicles in northern China, lithium iron phosphate batteries cannot provide normal power or the power supply is too low in autumn and winter, and the temperature of the working environment must be adjusted to maintain its performance. At present, domestic solutions to the constant temperature working environment of lithium iron phosphate batteries need to consider space constraints. The most common solution is to use airgel felt as an insulating layer. Lithium batteries with lithium iron phosphate cathode material can be charoperated at a high rate and can be fully charged in just 1 hour.
Specific physical parameters:
Apparent density: 0.7 g/cm^3
Tapped density: 1.2 g/cm63
< p>Median diameter: 2-6umSpecific surface area<30m^2/g
Smear parameters:
LiFePo4:C:PVDF=90:3 :7
Pole piece compacted density: 2.1-2.4 g/cm^3
Electrochemical performance:
Capacity in grams>155 mAh/g Test conditions: half battery, 0.2C, voltage 4.0-2.0V
Number of cycles: 2000 times
Domestic and international material manufacturers of lithium iron phosphate:
Domestic: Tianjin Bamo Hangzhou Jinma Energy, Yunnan Huilong, Tianjin Strand, Peking University, Hunan Ruixiang Tihu Energy, Taiwan Changyuan, Taiwan Likai, Zhengzhou Langtai, Hangzhou Sainz, Jiangxi Gold Lithium Technology, etc.
International: Photech of Canada, Valencia of the United States, American A123, Japanese Sony. Among them, A123 is thee most important and enjoys the strong support of the American government. He is now bankrupt.