---的液态金属电池用于电网级储能
Kangli Wang1, Kai Jiang1, Brice Chung1
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA.
Nature
|September 26, 2014
概括
一种新的----液体金属电池为电网规模的能源存储提供了一个具有成本效益的解决方案. 这种创新设计具有高效率和长期可靠性,对于整合可再生能源至关重要.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 电网规模的储能对于可靠性和整合风能和太阳能等可再生能源至关重要.
- 由于其紧的尺寸和位置的灵活性,电池是有希望的,但高成本阻碍了采用.
- 液体金属电池在大型应用中比传统电池具有潜在的优势.
研究的目的:
- 开发和评估一种新的---电池,用于静止式储能.
- 评估这种新电池化学的性能,效率和长期稳定性.
- 探索电网规模电池解决方案的成本降低策略.
主要方法:
- 使用液体电极 (和-合金) 和盐电解质构建一个LiidiyeSb-Pb电池.
- 在450°C测试电池性能,包括在各种电流密度下进行充放电循环.
- 加快老化测试,以预测长期的容量保留.
主要成果:
- 体电池的Sb-Pb电池在275mA/cm2时显示了98%的库伦比效率和73%的往返能效.
- 电池表现出高功率能力,承受高达1000mA/cm2的电流密度.
- 经过十年的每日循环,预计容量保留超过85%,在1800小时的运行中损失最小.
结论:
- 液体金属电池符合静止能源存储的性能规格.
- 与合金合金降低运行温度和成本,同时保持高电池电压.
- 这种方法为先进的电池化学和电网规模的储能提供了一个有希望的,具有成本效益的途径.
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