An improved high-performance lithium-air battery
An improved high-performance lithium-air battery
复制标题
DOI：
10.1038/nchem.1376
复制
发表时间：
2012-07-01
期刊：
影响因子：
21.8
通讯作者：
Scrosati, Bruno
中科院分区：
文献类型：
--
作者：
Jung, Hun-Gi;Hassoun, Jusef;Scrosati, Bruno
尽管作为流行便携式设备的首选电源在消费电子市场占据主导地位，但普通锂电池尚不适合在可持续电气化道路运输中使用。开发先进、更高能量的锂电池对于电动汽车市场的快速建立至关重要。由于其极高的能量潜力，锂空气电池是履行这一角色的非常有吸引力的候选者。然而，此类电池的性能仅限于低倍率能力的几次充放电循环。在这里，通过选择合适的稳定电解质和适当的电池设计，我们展示了一种能够多次循环运行的锂空气电池，其容量和倍率值分别高达 5,000 mAh g（碳）（-1）和 3 A g（碳）（-1）。对于这种电池，我们估计其能量密度值远高于当前可用的锂离子电池技术提供的能量密度值。
Although dominating the consumer electronics markets as the power source of choice for popular portable devices, the common lithium battery is not yet suited for use in sustainable electrified road transport. The development of advanced, higher-energy lithium batteries is essential in the rapid establishment of the electric car market. Owing to its exceptionally high energy potentiality, the lithium-air battery is a very appealing candidate for fulfilling this role. However, the performance of such batteries has been limited to only a few charge-discharge cycles with low rate capability. Here, by choosing a suitable stable electrolyte and appropriate cell design, we demonstrate a lithium-air battery capable of operating over many cycles with capacity and rate values as high as 5,000 mAh g(carbon)(-1) and 3 A g(carbon)(-1), respectively. For this battery we estimate an energy density value that is much higher than those offered by the currently available lithium-ion battery technology.