用于高温应用的金属氢化物基热化学储能系统的影响、障碍和未来前景：全面综述,Energy Technology

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用于高温应用的金属氢化物基热化学储能系统的影响、障碍和未来前景：全面综述
Energy Technology ( IF 3.6 ) Pub Date : 2024-01-22 , DOI: 10.1002/ente.202300768
Sumeet Kumar Dubey ₁ , K. Ravi Kumar ₁ , Vinay Tiwari ₂ , Umish Srivastva ₂

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本文根据热化学特性、工作温度和存储密度总结了各种热化学储能 (TCES) 系统。基于金属氢化物（MH）的TCES因其较高的储能密度（>100 kWh m ^-3）、较高的工作温度（>500 °C）、相对较好的反应动力学以及最小或无能量而成为一种潜在的储能系统损失（理论上）。 MH的工作温度范围不同，根据温度的不同，MH分为低温MH和高温MH。本文重点介绍了工作温度高于 300 °C、储能密度超过 100 kWh m ⁻³的潜在金属合金，适用于聚光太阳能热发电和工业过程加热应用。镁 (Mg) 合金基氢化物在 400 °C 以上的温度下表现出良好的循环稳定性（高达 1500 次循环）。一些小规模的实验研究已经探索了镁基合金更低的材料成本、更高的储能容量、更好的可逆性和更高的热稳定性。据报道，基于 MH 的 TCES 系统的热能存储 (TES) 效率约为 90%，明显高于显热和潜热 TES 系统。详细讨论了与基于 MH 的 TES 系统相关的挑战，例如增强传热、降低成本以及化学和热稳定性。

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Impacts, Barriers, and Future Prospective of Metal Hydride-Based Thermochemical Energy Storage System for High-Temperature Applications: A Comprehensive Review

This article summarizes various thermochemical energy storage (TCES) systems based on their thermochemical properties, operating temperature, and storage density. Metal hydride (MH)-based TCES is a potential energy storage system due to its higher energy storage density (>100 kWh m⁻³), higher operating temperature (>500 °C), relatively better reaction kinetics, and minimal or no energy losses (theoretically). MHs operate at various temperature ranges, and based on temperature, they are classified as low-temperature MH and high-temperature MH. This article highlights potential metal alloys operating above 300 °C, with an energy storage density of more than 100 kWh m⁻³, suitable for concentrated solar thermal power generation and industrial process heating applications. Magnesium (Mg) alloy-based hydrides have shown good cyclic stability (up to 1500 cycles) at a temperature above 400 °C. The lower cost of material, higher energy storage capacity, better reversibility, and higher thermal stability of Mg-based alloys have been explored in several small-scale experimental investigations. The thermal energy storage (TES) efficiency of MH-based TCES systems is reported ≈ 90%, which is significantly higher than sensible and latent TES systems. Challenges associated with MH-based TES systems, such as heat transfer enhancement, cost reduction, and chemical and thermal stability, have been discussed in detail.

更新日期：2024-01-22

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