调查Fe-Ni电池/模块的电网服务工作周期
Nimat Shamim1, Edwin C Thomsen1, Alasdair J Crawford2
1Battery Materials & System Group, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
Materials (Basel, Switzerland)
|June 27, 2024
概括
铁电池对电网储能充满希望,在频率调节和峰值削减方面提供稳定的性能. 最佳的充电状态和维护是最大限度地提高这些应用程序的效率和耐用性的关键.
科学领域:
- 电化学 电化学 电化学
- 储能系统 储能系统 储能系统
- 材料科学 材料科学 材料科学
背景情况:
- 铁 (Fe-Ni) 电池具有耐用性,但由于效率低和维护成本高,因此面临采用障碍.
- 电网储能需要可靠和高效的电池技术,用于频率调节和峰值剃须等应用.
研究的目的:
- 评估Fe-Ni电池在电网储能应用中的可行性和性能.
- 评估电荷状态 (SOC) 对Fe-Ni电池效率和电网服务的循环能力的影响.
主要方法:
- 在不同电荷状态下进行频率调节 (FR) 测试 (100%,50%,25%).
- 在不同的负载条件下进行峰值剃须 (PS) 测试.
- 扩展循环测试,以评估长期稳定性和可靠性.
主要成果:
- 在100%和50%SOC的FR测试中观察到稳定的性能,与100%SOC相比,50%SOC的效率提高了14%,而100%SOC的效率提高了14%.
- 25% SOC的效率更高,但由于放电切断电压,观察到循环能力有限.
- 铁电池在PS测试中表现出稳定的结果,并通过延长循环实现长期电网规模应用的潜力.
结论:
- 最佳的SOC选择,电池监测,维护和充电策略对于Fe-Ni电池的有效FR应用至关重要.
- 铁电池显示适合和可靠的峰值剃须应用程序.
- 该研究证实了Fe-Ni电池在长期电网规模储能方面的潜力,特别是用于FR和PS服务.
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