Effects of lithium source and electrochemical window on the properties of Li1.2Fe0.16Ni0.24Mn0.4O2 cathode material prepared by oxalate co-precipitation method
Source abstract
Abstract
Due to the limitation of the theoretical specific capacity of traditional cathode materials, the key to improve the energy density of lithium-ion batteries (LIBs) is to develop high-performance cathode materials. As a promising cathode material for LIBs, Fe-containing lithium-rich manganese-based materials possess high specific capacity and high working voltage. At present, the research on the synthesis and electrochemical reaction mechanism of this kind of material is still imperfect. Here, a facile oxalate co-precipitation method is employed to prepare Li1.2Fe0.16Ni0.24Mn0.4O2 using different lithium sources. The effects of lithium source and electrochemical window on the specific capacity and cyclic stability of the materials are also systematically investigated. When applied in LIBs, the prepared material using LiNO3 as lithium source presents a micro-nano hierarchical structure and exhibits a high first discharge specific capacity of 337.7 mAh g−1 and a high reversible capacity of 208.4 mAh g−1 after 60 cycles at 0.1 C in the voltage range of 1.5 − 4.8 V. The results of this study can provide more selectivity for the lithium source of the electrode material during the preparation process, and select a suitable voltage test range for cathode materials to achieve specific properties. The outstanding performances make this oxalate co-precipitation process a prospective method to prepare high-capacity cathode materials for LIBs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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