Chemical looping induced CH3OH-H2-PEMFC scheme for fuel cell vehicle: Parameter optimization and feasibility analysis
Chemical looping induced CH3OH-H2-PEMFC scheme for fuel cell vehicle: Parameter optimization and feasibility analysis
复制标题
燃料电池汽车化学链诱导CH3OH-H2-PEMFC方案：参数优化及可行性分析
DOI：
10.1016/j.jpowsour.2020.228790
复制
发表时间：
2020-12-15
影响因子：
9.2
通讯作者：
Sun, Zhiqiang
中科院分区：
文献类型：
--
作者：
Liu, Junpeng;Zhou, Zhengruo;Sun, Zhiqiang
在这项工作中，一个混合系统相结合的化学链甲醇重整器（CL重整器）和高温质子交换膜燃料电池（HT-PEMFC）的汽车电源提出。将铜基化学链诱导甲醇重整引入燃料电池汽车的供能方案优化。通过白杨Plus软件对集成系统的启动和工作阶段进行了综合考虑和模拟。在启动阶段，晶格氧参与甲醇的氧化水蒸气重整反应，实现自热制氢和铜基载氧体（OC）的还原（Cu 2 +-> Cu-0），还原后的OC可以通过空气氧化再生（Cu-0 -> Cu 2+）;在工作阶段，还原态OC（Cu-0）起催化甲醇转化的作用，甲醇重整模块可以回收HT-PEMFC电堆产生的热量。研究了CL重整器工况对甲醇重整产物质量和HT-PEMFC电堆性能的影响。此外，讨论了保持集成系统热中性的可行性。模拟结果表明，CL-转化器-HT-PEMFC系统能够实现自热运行，启动阶段和工作阶段的系统电效率分别为21.6%~ 26.7%和47.7%。
In this work, a hybrid system combined with chemical looping methanol reformer (CL-reformer) and hightemperature proton exchange membrane fuel cell (HT-PEMFC) is proposed for the vehicle power supply. The Cu-based chemical looping induced methanol reforming is introduced to optimize the energy supply scheme of fuel cell vehicles. The start-up and working stages of the integrated system are comprehensively considered and simulated via the ASPEN Plus software. In start-up stage, the lattice oxygen participates the oxidative steam reforming of methanol, achieving auto-thermal hydrogen generation and Cu-based oxygen carrier (OC) reduction (Cu2+-> Cu-0), and the reduced OC can be regenerated by the air oxidation (Cu-0 -> Cu2+); In working stage, the reduced OC (Cu-0) plays the role of catalyzing methanol conversion, and the heat generated from HT-PEMFC stack can be recovered by the methanol reforming module. The effects of CL-reformer conditions on the methanol reformate quality and the performance of HT-PEMFC stack are investigated. Furthermore, the feasibility of maintaining thermally neutral of the integrated system is discussed. Simulation results indicate that the CL-reformer-HT-PEMFC system can achieve auto-thermal operation, in which the system electrical efficiencies of 21.6%-26.7% and 47.7% can be obtained at start-up and working stages, respectively.