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首页> 外文会议>Unattended ground, sea, and air sensor technologies and applications XII >Semi-fuel cell studies for powering underwater devices:Integrated design for maximized net power output
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Semi-fuel cell studies for powering underwater devices:Integrated design for maximized net power output

机译：用于水下设备供电的半燃料电池研究：集成设计可实现最大净功率输出

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Use of sensor systems in water bodies has applications that range from environmental and oceanographic research to port and homeland security. Power sources are often the limiting component for further reduction of sensor system size and weight. We present recent investigations of metal-anode water-activated galvanic cells, specifically water-activated Al-cells using inorganic alkali peroxides and solid organic oxidizers (heterocyclic halamines), in a semi-fuel cell configuration (i.e., with cathode species generated in situ and flow-through cells). The oxidizers utilized are inexpensive solid materials that are generally (1) safer to handle than liquid solutions or gases, (2) have inherently higher current and energy capacity (as they are not dissolved), and, (3) if appropriately packaged, will not degrade over time. The specific energy (S.E.) of Al-alkali peroxide was found to be 230 Wh/kg (460 Wh/kg, considering only active materials) in a seven-gram cell. Interestingly, when the cell size was increased (making more area of the catalytic cathode electrode available), the results from a single addition of water in an Al-organic oxidizer cell (weighing ~18 grams) showed an S.E. of about 200 Wh/kg. This scalability characteristic suggests that values in excess of 400 Wh/kg could be obtained in a semi-fuel-cell-like system. In this paper, we also present design considerations that take into account the energy requirements of the pumping devices and show that the proposed oxidizers, and the possible control of the chemical equilibrium of these cathodes in solution, may help reduce this power requirement and hence enhance the overall energetic balance.
机译：在水体中使用传感器系统的应用范围从环境和海洋学研究到港口和国土安全。电源通常是进一步减小传感器系统尺寸和重量的限制因素。我们目前对金属阳极水活化原电池，特别是使用无机碱过氧化物和固体有机氧化剂（杂环卤代胺）的水活化Al电池，在半燃料电池构型（即，原位生成阴极物种）中的最新研究和流通池）。所使用的氧化剂是廉价的固体材料，通常（1）比液体溶液或气体更安全处理；（2）本质上具有较高的电流和能量容量（因为它们不溶解）；并且（3）如果包装得当，会不会随着时间的流逝而退化。发现在七克电池中，碱金属过氧化物的比能（S.E.）为230 Wh / kg（460 Wh / kg，仅考虑活性物质）。有趣的是，当电池尺寸增加（使更多的催化阴极电极可用）时，在Al-有机氧化剂电池（重约18克）中单次添加水的结果显示出S.E。约200 Wh / kg。这种可扩展性特征表明，在类似半燃料电池的系统中可以获得超过400 Wh / kg的值。在本文中，我们还提出了考虑泵送设备能源需求的设计注意事项，并表明拟议的氧化剂以及可能控制溶液中这些阴极的化学平衡可能有助于降低此功率需求，从而提高整体能量平衡。

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