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Design specifications of direct borohydride-hydrogen peroxide fuel cell system for space missions

机译：用于太空飞行的直接硼氢化物-过氧化氢燃料电池系统的设计规范

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The design specifications of a direct borohydride-hydrogen peroxide fuel cell (DBPFC) system for space missions were determined based on the energy density. A unit cell test of the DBPFC with electrocatalysts supported on multiwalled carbon nanotubes was conducted to evaluate the DBPFC performance. A relationship between the current density and voltage was obtained from the test results to estimate the total mass and energy density of the DBPFC system. The effects of changing the voltage efficiency and fuel concentrations on the total mass of the DBPFC system were investigated to determine the appropriate design specifications for space missions. When the voltage efficiency was 35%, the system mass was the lowest, regardless of the fuel concentrations. Finally, the energy density of the DBPFC system operating at the optimum voltage efficiency was calculated at various fuel concentrations. When the NaBH4 and H2O2 concentrations are higher than 20 and 65 wt%, respectively, the energy density (>400 Wh/kg) of the DBPFC system is higher than those of other power sources and the DBPFC system can be widely used for space missions. (C) 2016 Elsevier Masson SAS. All rights reserved.
机译：基于能量密度确定了用于太空飞行的直接氢硼化氢-过氧化氢燃料电池（DBPFC）系统的设计规格。用多壁碳纳米管上负载的电催化剂对DBPFC进行了晶胞测试，以评估DBPFC的性能。从测试结果获得电流密度和电压之间的关系，以估算DBPFC系统的总质量和能量密度。研究了改变电压效率和燃料浓度对DBPFC系统总质量的影响，以确定适合太空任务的设计规格。当电压效率为35％时，无论燃料浓度如何，系统质量最低。最后，计算了在各种燃料浓度下以最佳电压效率运行的DBPFC系统的能量密度。当NaBH4和H2O2的浓度分别高于20和65 wt％时，DBPFC系统的能量密度（> 400 Wh / kg）高于其他电源，DBPFC系统可以广泛用于太空飞行。 （C）2016 Elsevier Masson SAS。版权所有。

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