Modelling and development of photoelectrochemical reactor for H2 production
Modelling and development of photoelectrochemical reactor for H2 production
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DOI：
10.1016/j.ijhydene.2011.07.012
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发表时间：
2012-02-01
影响因子：
7.2
通讯作者：
Hellgardt, K.
中科院分区：
文献类型：
--
作者：
Carver, C.;Ulissi, Z.;Hellgardt, K.
在光电化学反应器中使用一个或多个半导体电极的水溶液的光电解是一种潜在的有吸引力的制氢方法，因为其具有高的能量效率、简单性和潜在的低成本。本文介绍了光电化学反应器的设计要求和模拟的初步结果。电势和电流密度分布，由于欧姆电势损失薄（非光）阳极导电性差的氟化物掺杂的氧化锡涂覆的玻璃基板上，进行了建模。预测的电流密度从边缘处的端子向0.1 x 0.1 m（2）阳极的中心迅速衰减，因此限制了此类基板的放大。溶解氧浓度的空间分布也进行了建模，旨在定义操作条件，将避免形成气泡，反射光镜面降低光电极的光子吸收效率。的影响，为今后的反应器的优化进行了讨论。版权所有（C）2011，氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
Photoelectrolysis of aqueous solutions, using one or more semiconducting electrodes in a photoelectrochemical reactor, is a potentially attractive process for hydrogen production because of its prospectively high energy efficiency, simplicity and potentially low cost. The design requirements and preliminary results of modelling a photoelectrochemical (PEC) reactor are described. Potential and current density distributions, due to ohmic potential losses in thin (non-photo) anodes on poorly conducting fluoride-doped tin oxide coated glass substrates, were modelled. The predicted current densities decayed rapidly from the terminals at the edges, towards the centre of a 0.1 x 0.1 m(2) anode, so limiting scale-up with such substrates. Spatial distributions of dissolved oxygen concentrations were also modelled, aiming to define operating conditions that would avoid forming bubbles, which reflect light specularly decreasing photon absorption efficiencies of photoelectrodes. The implications for the future optimization of the reactor are discussed. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.