材料科学
掺杂剂
阴极
锂(药物)
兴奋剂
电化学
磷酸钒锂电池
纳米技术
光电子学
化学
电极
物理化学
医学
内分泌学
作者
Shixue Dou,Dan Tan,Ping Li,Huiqin Li,Wei Fenyan,Hongge Zhang
标识
DOI:10.1007/s10008-022-05294-9
摘要
At present, α-NaFeO2 lithium-rich layered oxides (LLO) as cathode materials for lithium-ion batteries have attracted widespread attention due to their structure and performance characteristics and have become the mainstream research materials for lithium-ion batteries. However, during the charge and discharge process, the irreversible phase transition, cation mixing, and oxygen loss on the surface will lead to the inevitable severe capacity attenuation. Aiming at these problems, researchers have carried out a lot of modification on the material to improve the electrochemical performances without changing the crystal structure. Element doping is one of the commonly used effective strategies. In this work, the recent progress in understanding the influences of dopants in LLO cathode materials were summarized through five types: dopants substituted for transition metal (TM), lithium, oxygen, respectively, and multiple-dopants, the element doping combined with other strategies. In addition, the development trend of element doping in LLO cathode materials was prospected. It is believed that this review can guide researchers on developing ion doping strategies for the LLO cathode materials.
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