燃料电池供氢系统中 AB2 储氢合金的关键技术及应用

Ming Yao , Jianguang Yuan , Bao Zhang , Youhua Yan , Shaoxiong Zhou , Ying Wu
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引用次数: 0

摘要

目前,关于使用固体储氢材料的燃料电池发电系统技术的应用研究十分有限,尤其是在氢助力两轮车中的应用。考虑到储氢材料储氢能力低、动力学性能差等缺点,我们的首要任务是在较宽的温度范围内实现平稳的氢吸收/解吸,以满足燃料电池及其集成发电系统的要求。本文采用电弧熔炼法成功制备了 Ti0.9Zr0.1Mn1.45V0.4Fe0.15 储氢合金。在 318 K 时,最大储氢量达到 1.89 wt%。在 7 MPa 的压力下,该合金能在 50 秒内吸收 90% 的储氢量,并在 220 秒内释放 90% 的氢气。Comsol Multiphysics 6.0 软件用于模拟储氢罐的吸氢/脱氢过程。氢气吸收过程中冷却水的流速以 (0.02 + x) m s-1 的梯度变化(x = 0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12)。冷却水流速与氢气吸收率呈正相关,但与成本呈负相关。当冷却速率为 0.06 m s-1 时,模拟和实验都表明,储氢罐在 2 L min-1 的流速下能够稳定解吸氢气 6 h 以上。基于上述结论,我们成功研制了续航里程达 80 公里的氢能助力两轮摩托车,并在常州和韶关实现了区域示范运营。本文重点介绍了我们团队近年来在以固体储氢材料为储氢载体的燃料电池发电系统的技术研发及其在两轮车中的应用所取得的成果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Key technology and application of AB2 hydrogen storage alloy in fuel cell hydrogen supply system

Key technology and application of AB2 hydrogen storage alloy in fuel cell hydrogen supply system

At present, there is limited research on the application of fuel cell power generation system technology using solid hydrogen storage materials, especially in hydrogen-assisted two-wheelers. Considering the disadvantages of low hydrogen storage capacity and poor kinetics of hydrogen storage materials, our primary focus is to achieve smooth hydrogen ab-/desorption over a wide temperature range to meet the requirements of fuel cells and their integrated power generation systems. In this paper, the Ti0.9Zr0.1Mn1.45V0.4Fe0.15 hydrogen storage alloy was successfully prepared by arc melting. The maximum hydrogen storage capacity reaches 1.89 ​wt% at 318 ​K. The alloy has the capability to absorb 90% of hydrogen storage capacity within 50 ​s at 7 ​MPa and release 90% of hydrogen within 220 ​s. Comsol Multiphysics 6.0 software was used to simulate the hydrogen ab-/desorption processes of the tank. The flow rate of cooling water during hydrogen absorption varied in a gradient of (0.02 ​+ ​x) m s1 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12). Cooling water flow rate is positively correlated with the hydrogen absorption rate but negatively correlated with the cost. When the cooling rate is 0.06 m s1, both simulation and experimentation have shown that the hydrogen storage tank is capable of steady hydrogen desorption for over 6 h at a flow rate of 2 L min1. Based on the above conclusions, we have successfully developed a hydrogen-assisted two-wheeler with a range of 80 km and achieved regional demonstration operations in Changzhou and Shaoguan. This paper highlights the achievements of our team in the technological development of fuel cell power generation systems using solid hydrogen storage materials as hydrogen storage carriers and their application in two-wheelers in recent years.

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材料导报:能源(英文)
材料导报:能源(英文) Renewable Energy, Sustainability and the Environment, Nanotechnology
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