掺杂元素对LiMn_2O_4结构和性能的影响

The influence of doped elements on structure and performances of LiMn_2O_4

用价廉的氧化物取代锂离子电池正极活性物锂钴氧化物 ,是锂离子电池进一步发展及扩大其应用领域的重要保证。锂锰氧化物是最有希望的正极活性物质。但锂锰氧化物的不稳定性制约着它的应用。如何获取结构稳定的锂锰氧化物成为当今锂离子电池研究的热门课题。用掺杂方法被认为是稳定锂锰氧化物结构的有效方法 。

s:Li ion batteries were widely used in electronic industry and had great potentiality of application in transportation and other power sources.It was necessary to find substitutes for lithium cobalt oxide used as positive active material in Li ion batteries because of the lack of cobalt in the earth.It was believed that lithium manganese oxide was a good substitute.However,structure instability of lithium manganese oxide made its application difficulty.Many methods were developed to prepare stable lithium manganese oxide.It was found that some elements doped in lithium manganese oxide could stabilize its structure.Recent literatures on investigations on doped lithium manganese oxide were reviewed.