共查询到19条相似文献,搜索用时 128 毫秒
1.
燃料电池是转换效率很高的一次性电能转换装置,早先主要应用于宇宙空间的探索方面,近几十年来随着材料工艺的不断发展,它的应用领域也不断得到了开拓,尤其在发电方面的开发上取得了较大进展。目前开发的燃料电池技术主要有以下类型:碱性燃料电池熔融碳酸盐燃料电池(MCFC)磷酸燃料电池(PAFC)固体聚合物质子交换膜燃料电池(PE)固体氧化物燃料电池(sooc)本文主要介绍后四种类型。1磷酸燃料电池(PAFC)磷酸燃料电池体积小,运行温度在200℃左右,发电效率达40%,工作时无噪声和振动,可动部件少,几乎不排放污染物,是开发… 相似文献
2.
3.
固体氧化物燃料电池(SOFC)采用的是全固体的电池结构,可进行甲烷、燃料油(汽油、柴油)的内部重整、适用于多种燃料气,从而解决了燃料的供应问题?固体氧化物燃料电池不但可以应用于固定电站。在电动车方面也有很好的发展前景。较详细地介绍了SOFC在汽车方面的应用以及为了实现这一技术的产业化所必须解决的关键问题。 相似文献
4.
燃料电池发展现状与应用前景 总被引:9,自引:0,他引:9
介绍了各种类型燃料电池(碱性燃料电池,熔融碳酸盐燃料电池,固体氧化物燃料电池,磷酸燃料电池及质子交换膜燃料电池)的技术进展,电池性能及其特点。其中着重介绍了当今国际上应用较广泛,技术较为成熟的磷酸燃料电池和质子交换膜燃料电池。对燃料电池的应用前景进行探讨,并对我国的燃料电池研究提出了一些建议。 相似文献
5.
6.
<正> 最近,日本东燃公司期待已久的大型固体电解质平板型燃料电池(第三代燃料电池),达到了200W的世界最高输出功率。(基本构造见图1) 相似文献
7.
8.
9.
10.
11.
《Energy Conversion and Management》2002,43(9-12):1249-1257
Within the context of mounting pressures on existing resources and the environment, fuel cell systems can and probably will play a major role. From a second law standpoint, their potential for effectively contributing to solutions, which deal with these pressures is great. This is true for fuel cells as standalone systems and even more so as systems working in concert with more conventional energy conversion processes.In order to put these systems in perspective, a brief summary of existing processes for energy conversion is presented as are projections for future improvements. The principal types of fuel cell systems are then discussed. This is followed by a brief discussion of their second law role followed by some perspectives on the modeling and analysis needs for future fuel cell system developments. 相似文献
12.
13.
14.
15.
16.
《International Journal of Hydrogen Energy》2022,47(2):1103-1120
Solid oxide fuel cell (SOFC) is known for its higher efficiency compared to the other types of fuel cells. Even so, the application of SOFC is hindered by the operational temperature of 800 °C–1000 °C. Lowering the operational temperature below 1000 °C of SOFC becomes the major concern to allow wider applications as well as to increase the durability of the system. Improving the electrochemical performance for SOFC requires further improvement on the main components of SOFC including the air/oxygen electrode namely, the cathode. The manganite, cobaltite, ferro-cobaltite, and ferrite-based materials are known to be used as SOFC cathode, alongside new candidates such as lithiated-based material. Nonetheless, the key challenges for SOFC cathode are to find a suitable material with high electrocatalytic property at lower operational temperature of 400 °C–800 °C. This review paper provides brief information that covered as-mentioned cathode categories, taking into account the microstructural modifications performed via composite, doping, infiltration technique, and synthesis method. Finally, electrolyte-layer free fuel cell (EFFC) is introduced as a new type of SOFC that use natural resources in the fuel cells as a process to reduce its cost. 相似文献
17.
18.
金海彬 《电网与水力发电进展》2013,29(11):90-95
质子交换膜燃料电池(PEMFC)作为一种重要的燃料电池,对于发展新型清洁能源以及改善环境有着重要的意义。针对其数学模型与仿真方法展开了研究。首先简单介绍了PEMFC的原理与特性,并构建了PEMFC系统的数学模型,模型主要包括燃料电池模型与气体改革者模型。然后以MATLAB的SIMULINK为平台依据上述模型建立了PEMFC的仿真模型,并利用仿真模型分析了PEMFC在负载变化情况下的输出特性以及燃料变化特性,结果表明,PEMFC能够快速地响应负载的变化,输出特性良好。 相似文献
19.
In this paper, a supervisor system, able to diagnose different types of faults during the operation of a proton exchange membrane fuel cell is introduced. The diagnosis is developed by applying Bayesian networks, which qualify and quantify the cause–effect relationship among the variables of the process. The fault diagnosis is based on the on-line monitoring of variables easy to measure in the machine such as voltage, electric current, and temperature. The equipment is a fuel cell system which can operate even when a fault occurs. The fault effects are based on experiments on the fault tolerant fuel cell, which are reproduced in a fuel cell model. A database of fault records is constructed from the fuel cell model, improving the generation time and avoiding permanent damage to the equipment. 相似文献