Effect of high temperature environment on the performance of LiNi0.5Co0.2Mn0.3O2 battery. (January 2017)

• Record Type: Journal Article
• Authors: Situ, Wenfu; Yang, Xiaoqing; Li, Xinxi; Zhang, Guoqing; Rao, Mumin; Wei, Chao; Huang, Zhi
• Is Part Of: International journal of heat and mass transfer. Volume 104(2017:Jan.)
• Page Start: 743
• Page End: 748
• Publication Date: 2017-01
• Subjects: LiNi0.5Co0.2Mn0.3O2 -- High temperature -- High-rate discharge -- Electrochemical performance -- Thermal runaway; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.09.005
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: Thermal generation behavior of 18650 NCM523 batteries is investigated. The decreased thermal effect is ascribed to the increased internal resistance. The high environment temperature also leads to a capacity fading obviously. The crystal/nano structure of the cathode is destroyed at high temperature. Abstract: Thermal generation behavior of 18650 ternary LiNi0.5 Co0.2 Mn0.3 O2 batteries was tested at working environment of 30 and 50 °C, respectively. The experimental results showed that the surface temperature difference of the battery at high temperature of 50 °C and its corresponding heating rate were both higher than those at 30 °C owing to the increased internal resistance, which also led to a decrease of lithium storage capacity obviously. By characterizing the crystal/nano structure of the ternary cathode materials, these phenomena could be ascribed to the damage of the crystal structure and aggregation of the electrode materials.