期刊
JOURNAL OF POWER SOURCES
卷 380, 期 -, 页码 185-193出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.01.080
关键词
Li-ion battery; Lifecycle; Grid service; Frequency regulation; Peak shaving
资金
- U.S. Department of Energy (DOE) [DE-AC05-76RL01830]
- DOE Office of Electricity Delivery and Energy Reliability (OE) [57558]
- Office of Vehicle Technologies [DEAC02-98CH10886]
Li-ion batteries are expected to play a vital role in stabilizing the electrical grid as solar and wind generation capacity becomes increasingly integrated into the electric infrastructure. This article describes how two different commercial Li-ion batteries based on LiNi0.8Co0.15Al0.05O2 (NCA) and LiFePO4 (LFP) chemistries were tested under grid duty cycles recently developed for two specific grid services: (1) frequency regulation (FR) and (2) peak shaving (PS) with and without being subjected to electric vehicle (EV) drive cycles. The lifecycle comparison derived from the capacity, round-trip efficiency (RTE), resistance, charge/discharge energy, and total used energy of the two battery chemistries are discussed. The LFP chemistry shows better stability for the energy intensive PS service, while the NCA chemistry is more conducive to the FR service under the operating regimes investigated. The results can be used as a guideline for selection, deployment, operation, and cost analyses of Li-ion batteries used for different applications.
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