Department of WCU Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
Nat Chem. 2012 Jun 10;4(7):579-85. doi: 10.1038/nchem.1376.
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.
尽管作为流行便携式设备首选电源在消费电子产品市场占据主导地位，但常见的锂电池还不适合用于可持续电动道路运输。为了快速建立电动汽车市场，开发先进的、高能量密度的锂电池至关重要。由于具有极高的能量潜力，锂空气电池是满足这一需求的极具吸引力的候选电池。然而，这种电池的性能仅限于少数几次具有低倍率能力的充放电循环。在这里，我们通过选择合适的稳定电解质和适当的电池设计，展示了一种能够进行多次循环的锂空气电池，其容量和倍率分别高达 5000 mAh g(carbon)(-1)和 3 A g(carbon)(-1)。对于这种电池，我们估计其能量密度值远高于目前可用的锂离子电池技术。
