TY - JOUR
T1 - Thermochemical energy storage
T2 - bridging the gap between solar energy and long-term energy storage
AU - Kong, Hui
AU - Tang, Xiangnan
AU - Ma, Tengyu
AU - Guo, Yongpeng
AU - Yang, Zhiqin
AU - Wang, Hongsheng
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2026/4
Y1 - 2026/4
N2 - The intermittent nature of solar energy significantly hampers its broader use. In response, thermal energy storage emerges as a prime solution, leveraging its cost efficiency and low corrosivity to efficiently harness solar power. Among the various strategies available, thermochemical energy storage is particularly notable for its superior energy density and minimal loss of energy, allowing for long-term and large-scale energy storage with high energy density. This document thoroughly reviews potential thermochemical energy storage reactions, with a special focus on those operating at temperatures below 2000 °C. It explores the foundational advancements of each reaction system, evaluates ongoing research efforts and obstacles, and outlines potential directions for future advancements. The insights offered are designed to inform and direct the development and selection of thermochemical energy storage systems, paving the way for their future implementation.
AB - The intermittent nature of solar energy significantly hampers its broader use. In response, thermal energy storage emerges as a prime solution, leveraging its cost efficiency and low corrosivity to efficiently harness solar power. Among the various strategies available, thermochemical energy storage is particularly notable for its superior energy density and minimal loss of energy, allowing for long-term and large-scale energy storage with high energy density. This document thoroughly reviews potential thermochemical energy storage reactions, with a special focus on those operating at temperatures below 2000 °C. It explores the foundational advancements of each reaction system, evaluates ongoing research efforts and obstacles, and outlines potential directions for future advancements. The insights offered are designed to inform and direct the development and selection of thermochemical energy storage systems, paving the way for their future implementation.
KW - Energy carrier
KW - Heat storage
KW - Long-term and large-scale energy storage
KW - Solar energy
KW - Thermochemical energy storage
UR - https://www.scopus.com/pages/publications/105025531170
U2 - 10.1016/j.rser.2025.116658
DO - 10.1016/j.rser.2025.116658
M3 - Review article
AN - SCOPUS:105025531170
SN - 1364-0321
VL - 229
JO - Renewable and Sustainable Energy Reviews
JF - Renewable and Sustainable Energy Reviews
M1 - 116658
ER -