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A novel flow field with controllable pressure gradient to enhance mass transport and water removal of PEM fuel cells

机译：一种具有可控压力梯度的新型流场，以增强PEM燃料电池的质量传输和除水

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Abstract >An easily machined novel flow field with controllable pressure gradient across adjacent channels was designed and a two dimensional, across‐the‐channel, two‐phase model was developed to study the gas transport and water removal of the novel configuration. The effect of channel‐rib width ratio, GDL thickness and pressure gradient on the profiles of oxygen concentration and water saturation within the GDL were investigated. Special attention was paid to the mechanisms of the promoted mass transport and water removal rates under a pressure gradient. The model was validated by experiments with various channel‐rib ratios and GDL thicknesses at different operating pressure. The results revealed that, oxygen concentration was increased, and the water saturation was reduced under the rib with a pressure gradient generated across the adjacent channels. The optimal pressure gradient is between 0.1 to 0.2 atm for the studied channel geometry and configuration. The mechanisms of the improved cell performance were elucidated. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> 易于加工的新颖流场，设计了具有可控压力梯度的相邻通道的跨越频率，并且开发了二维，两相模型，以研究气体运输和除水的新配置。研究了通道 - 肋宽度比，GDL厚度和压力梯度对GDL内氧浓度和水饱和度的曲线的影响。在压力梯度下，对促进的质量运输和水去除率的机制支付了特别的注意。通过在不同的操作压力下进行各种通道 - 肋的比率和GDL厚度进行验证该模型。结果表明，氧气浓度增加，并且在肋下减小了水饱和度，其压力梯度在相邻通道上产生。对于所研究的通道几何形状和配置，最佳压力梯度在0.1至0.2atm之间。阐明了改善的细胞性能的机制。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-18537/'>《AIChE Journal》</a> <b style="margin: 0 2px;">|</b><span>2020年第6期</span><b style="margin: 0 2px;">|</b><span>共13页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/238.html" title="化学工业">化学工业;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=bipolar plates&option=203" rel="nofollow">bipolar plates;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=novel flow fields&option=203" rel="nofollow">novel flow fields;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=PEM fuel cells&option=203" rel="nofollow">PEM fuel cells;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=pressure gradient&option=203" rel="nofollow">pressure gradient;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=water removal&option=203" rel="nofollow">water removal;</a> </p> <div class="translation"> 机译：双极板;新颖的流动场;PEM燃料电池;压力梯度;除水; 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2019</span><span>,第003期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-21288_thesis/02022330102.html">交指流场PEM燃料电池中的电流分布</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=张广升&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 张广升</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=马斌&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,马斌</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=徐城杰&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,徐城杰</a> <span> <a href="/conference-cn-21288/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 第八届全国氢能学术会议 </a> <span> <span> . 2007</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/020312502718.html">PEM燃料电池蛇形流场中气体与水传输的模拟</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=范朝兵&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 范朝兵</a> <span> . 2007</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120203849052.html">一种PEM燃料电池组的阴极流场板</a> <b>[P]</b> . <span> 中国专利： CN203850383U </span> <span> . 2014.09.24</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/061203363125.html">PEM燃料电池堆及其流场板组</a> <b>[P]</b> . <span> 中国专利： CN105870476B </span> <span> . 2019.06.07</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130436225097.html">HYDROPHILIC LAYER ON FLOW FIELD FOR WATER CONTROL IN PEM FUEL CELL</a> <b>[P]</b> . <span> 外国专利：  JP2007095677A </span> <span> . 2007-04-12</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：PEM燃料电池流场中的亲水层用于水控制 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130408463957.html">Flow field for a fuel cell with high pressure gradient flow paths and method of making a separator plate</a> <b>[P]</b> . <span> 外国专利：  DE112004002652B4 </span> <span> . 2017-03-02</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：具有高压梯度流路的燃料电池的流场和隔板的制造方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130408463956.html">Flow field for a fuel cell with high pressure gradient flow paths and method of making a separator plate</a> <b>[P]</b> . <span> 外国专利：  DE112004002652B8 </span> <span> . 2017-04-20</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：具有高压梯度流路的燃料电池的流场和隔板的制造方法 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704022506680','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> <h2>期刊订阅</h2> <img src="https://cdn.zhangqiaokeyan.com/img/loginclose.png" alt="" onclick="$('.journalsub-pop-up').hide()"> <p class="pardon">抱歉，该期刊暂不可订阅，敬请期待！</p> <p class="current">目前支持订阅全部北京大学中文核心（2020）期刊目录。</p> <div style="display: flex;margin-top: 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