High-Performance MEA Prepared by Direct Deposition of Platinum on the Gas Diffusion Layer Using an Atomic Layer Deposition Technique
High-Performance MEA Prepared by Direct Deposition of Platinum on the Gas Diffusion Layer Using an Atomic Layer Deposition Technique
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采用原子层沉积技术在气体扩散层上直接沉积铂制备高性能 MEA
DOI：
10.1016/j.electacta.2015.03.031
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发表时间：
2015-09
影响因子：
6.6
通讯作者：
Du, Li
中科院分区：
文献类型：
--
作者：
Hsieh, Chien-te;Su, Ay;Song, Hui-yu;Du, Li
采用原子层沉积（ALD）技术将铂直接沉积在气体扩散层上形成催化层，成功制备了低铂负载量的高性能膜电极组件（MEA）。用ALD制备的电极作为阳极制造MEA，并与预处理的Nafion®膜（Nafion®117）和商业阴极组装。在单电池测试站中对MEA进行了评估，并通过循环伏安法（CV）、场发射扫描电子显微镜（FE-SEM）、高分辨率透射电子显微镜（HRTEM）和掠入射X射线衍射（XRD）对其进行了表征。结果表明，活性组分Pt在ALD阳极中高度分散，具有ALD阳极的MEA显示出优异的活性和稳定性。质量活性达到4.80 kW g Pt-1，这是使用商业催化剂和常规丝网印刷方法制备的阳极的MEA的质量活性的2.53倍。在100小时的耐久性试验中，当MEA以400 mA cm-2的电流密度放电时，与CC-MEA（92.5%电压保持率）相比，ALD-MEA显示出优异的耐久性（98.2%电压保持率）。高性能，沿着低铂负载和高铂利用率，使得ALD技术有希望用于PEM燃料电池。
A high-performance membrane electrode assembly (MEA) with low platinum loading was successfully prepared using an atomic layer deposition (ALD) technique, in which the platinum was directly deposited on the gas diffusion layer to form the catalyst layer. MEAs were fabricated with an ALD-prepared electrode as the anode, and assembled with pretreated Nafion®membrane (Nafion®117) and a commercial cathode. The MEAs were evaluated in a single-cell test station and characterized by cyclic voltammetry (CV), field-emission scanning electron microscope (FE-SEM), high-resolution transmission electron microscope (HRTEM) and grazing incident X-ray diffraction (XRD). The results revealed that the active component, Pt, was highly dispersed in the ALD anode, and the MEA with the ALD anode showed excellent activity and stability. The mass activity reached 4.80 kW g Pt−1, which was 2.53 times higher than that of the MEA with the anode prepared using the commercial catalyst and a conventional screen printing method. In 100 h of durability testing, the ALD–MEA exhibited excellent durability (98.2% voltage retention) compared with the CC–MEA (92.5% voltage retention) when the MEA was discharged at a current density of 400 mA cm−2. The high performance, along with low platinum loading and high platinum utilization, make the ALD technique promising for use in PEM fuel cells.
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影响因子：
15
作者：
Liao, SJ;Holmes, KA;Birss, VI
通讯作者：
Birss, VI
影响因子：
9.2
作者：
Fouda-Onana, F.;Guillet, N.;AlMayouf, A. M.
通讯作者：
AlMayouf, A. M.
影响因子：
7.2
作者：
Junsheng Zheng;Tian Tian-Tian;Yuan Gao;Qiang Wu;J. Ma;Jim P. Zheng
通讯作者：
Junsheng Zheng;Tian Tian-Tian;Yuan Gao;Qiang Wu;J. Ma;Jim P. Zheng
影响因子：
10.8
作者：
Shuifen Xie;Sang‐Il Choi;N. Lu;Luke T. Roling;J. Herron;Lei Zhang;Jinho Park;Jinguo G Wang
通讯作者：
Shuifen Xie;Sang‐Il Choi;N. Lu;Luke T. Roling;J. Herron;Lei Zhang;Jinho Park;Jinguo G Wang
影响因子：
56.9
作者：
Lim, Byungkwon;Jiang, Majiong;Xia, Younan
通讯作者：
Xia, Younan