Energy Storage Science and Technology ›› 2025, Vol. 14 ›› Issue (10): 3900-3916.doi: 10.19799/j.cnki.2095-4239.2025.0307

• Energy Storage System and Engineering • Previous Articles     Next Articles

Research status and outlooks of liquid air energy storage technology

Yuanzhi GAO1(), Ge YIN1, Xueli SUN1, Zhenming ZHANG1, Yu SU1, Feng HUANG1, Xiaoya FENG1, Tengfei HE1, Chen WANG2, Xiaosong ZHANG3   

  1. 1.State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean Emission, China Energy Science and Technology Research Institute Co. , Ltd. , Nanjing 210023, Jiangsu, China
    2.School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, Hebei, China
    3.School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China
  • Received:2025-03-28 Revised:2025-07-06 Online:2025-10-28 Published:2025-10-20
  • Contact: Yuanzhi GAO E-mail:gyz0213@outlook.com

Abstract:

Liquid air energy storage (LAES) technology has garnered considerable attention because of its unique advantages in enhancing grid stability. At present, the successful commissioning of several demonstration projects has validated the feasibility and broad application prospects of LAES technology. This study first introduces the basic principles and operating mechanisms of LAES. Then, it reviews the latest research advancements in this technology across various applications, including independent, coupled, and multi-output systems. Notably, the coupling of LAES technology with other energy systems, such as liquefied natural gas regasification and industrial waste heat usage, demonstrates substantial multi-energy conversion advantages, achieving efficient electricity, cooling, and heating integration. In the future, LAES technology is expected to continue evolving toward improved system cycle efficiency, optimized energy density, and reduced costs. Further, the integration of LAES with other energy systems through multi-energy coupling modes will promote large-scale power system applications. LAES is anticipated to play a crucial role in peak shaving, frequency modulation, and smoothing renewable energy outputs, thereby serving as a key technology supporting the transition to a low-carbon energy system.

Key words: liquid air, energy storage technology, energy density, multi-energy coupling, low-carbon energy

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