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首页> 外文期刊>International Journal of Electrochemical Science >Capacitive Nanosized Spinel α-LiFe5O8 as High Performance Cathodes for Lithium-ion Batteries
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Capacitive Nanosized Spinel α-LiFe5O8 as High Performance Cathodes for Lithium-ion Batteries

机译：电容性尖晶石α-LiFe 5 O 8 作为锂离子电池的高性能阴极

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摘要

The nanosized spinel -LiFe5O8 with a grain size of about 10 nm was fabricated by a facile solid statemethod via the assistance of oxalic acid. The as-prepared -LiFe5O8 electrode for lithium ion battery-1 -1 delivers a high reversible initial specific capacity of 257.1 mA h g at 28 mA g and remaining at 130-1 -1 mAh g at as high as 2820 mA g even after 100 cycles, as well as excellent rate capability andimproved cycling stability, which has not reported before for lithium ferrite oxides. This might beattributed to the characteristic pseudocapacitive behavior of lithium storage in nanosized spinel - LiFe5O8 and the structural stability of -LiFe5O8 upon charge/discharge as well, as evidenced by CVmeasurement for the as-prepared -LiFe5O8 electrode. The unique combination of those features forlithium ion battery and capacitor is potential to develop high performance hybrid energy storage devicefor the needs of electric vehicle batteries and other high powder applications.
机译：借助于草酸，通过简便的固态方法制备了具有约10nm的晶粒尺寸的纳米级尖晶石-LiFe 5 O 8。锂离子电池-1 -1的制备好的-LiFe5O8电极在28 mA g时可提供257.1 mA hg的高可逆初始比容量，在100-1之后甚至仍可保持在130-1 -1 mAh g时高达2820 mA g循环，以及出色的倍率能力和改善的循环稳定性，这在铁氧体锂氧化物中尚无报道。这可能归因于锂在尖晶石-LiFe5O8中的储能特性以及充电/放电时-LiFe5O8的结构稳定性，这由制备的-LiFe5O8电极的CV测量证明。锂离子电池和电容器的这些功能的独特结合，有可能开发出满足电动汽车电池和其他高粉应用需求的高性能混合储能设备。

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