Combinatorial screening of photoanode materials - Uniform platform for compositional arrays and macroscopic electrodes
Combinatorial screening of photoanode materials - Uniform platform for compositional arrays and macroscopic electrodes
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光电阳极材料的组合筛选 - 组合阵列和宏观电极的统一平台
DOI：
10.1016/j.electacta.2017.10.147
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发表时间：
2018
影响因子：
6.6
通讯作者：
G. Wittstock
中科院分区：
文献类型：
--
作者：
D. Kimmich;D. H. Taffa;C. Dosche;M. Wark;G. Wittstock
一种新的高通量评价复杂金属氧化物用于分水的新工作流程依赖于使用商用材料打印机进行库生产和使用扫描光电化学显微镜(SPECM)进行HIT鉴定。以锌盐和铁盐的二元混合物为例，对印刷工艺进行了多个方向的优化。首先，印刷二十烷的临时阻挡层，以将斑点限制在特定区域，并允许更大的液滴尺寸而不合并相邻液滴。其次，在施加金属盐之前打印甘油液滴，作为室温下不挥发的载液。金属盐溶液从乙二醇液打印到载体液滴中。有了这些预防措施，液滴仍以液态形式存在于衬底上，其侧向位置被二十烷格栅锁定。这避免了在连续印刷之间金属盐早期结晶的问题，并确保了前体溶液的完全混合。液滴随后通过程序升温至600摄氏度进行热处理，允许斑点的顺序干燥、网格结构的蒸发和铁氧体的形成。用同样的方法覆盖大量成分相同的宏观电极，以验证实验室光电化学电池中的HITS，并使用光电流瞬变和斩波光伏安法对其进行进一步表征。用拉曼光谱和光电子能谱对活性最高的化合物(Zn0.17Fe0.83Ox)进行了结构表征。有机会使用相同的打印协议来形成组分库以及扩展的单一组分电极，从而可以筛选中等大小的阵列，并使用专门的标准实验室仪器快速过渡到更深入的单一组分实验。
A new work flow for high-throughput evaluation of complex metal oxides for water splitting relies on the use of commercial material printer for library production and scanning photoelectrochemical microscopy (SPECM) for hit identification. The printing process is optimized into several directions using as an example binary mixtures of Zn2+and Fe3+salts as precursors. Firstly, temporary barrier layers from eicosane are printed to confine the spots to a particular region and to allow larger drop sizes without merging of neighboring droplets. Secondly, a glycerol droplet is printed before the application of metal salts to serve as a carrier liquid that is non-volatile at room temperature. The metal salt solutions are printed from ethylene glycol solutions into the carrier droplets. With these precautions, the drop remained as liquid phase on the substrate with their lateral position locked by the eicosane grid. This avoids problems with the early crystallization of metal salts between successive printing and ensured complete mixing of the precursor solution. The liquid drops are then thermally processed by temperature-programmed heating up to 600 °C allowing the sequential drying of the spots, evaporation of the grid structures and formation of ferrites. The same procedure is used to cover macroscopic electrodes with a large number of spots of identical composition to verify hits in laboratory photoelectrochemical cells and to use photocurrent transient and chopped light voltammetry for their further characterization. Structural characterization of the composition (Zn0.17Fe0.83Ox) with highest activity is performed by Raman and photoelectron spectroscopy. The opportunity to use the same printing protocols to form compositional libraries as well as extended single component electrodes allows screening of medium-sized arrays and the fast transition to more in depth single component experimentation using exclusively standard laboratory instrumentation.
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影响因子：
4.6
作者：
Nocera, Daniel G.
通讯作者：
Nocera, Daniel G.
影响因子：
6.6
作者：
Kimmich, Daniel;Taffa, Dereje H.;Wittstock, Gunther
通讯作者：
Wittstock, Gunther
喷墨打印满足电化学能量转换。
DOI：
--
发表时间：
2015
期刊：
Chimia (Basel)
影响因子：
--
作者：
A. Lesch;F. Cortés;Victor Costa Bassetto;V. Amstutz;H. Girault
通讯作者：
H. Girault
Fe-W-O薄膜光电化学性能的组合研究
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
Kirill Sliozberg;D. Schäfer;R. Meyer;A. Ludwig;W. Schuhmann
通讯作者：
W. Schuhmann
影响因子：
8.4
作者：
D. Peeters;Dereje H. Taffa;Marissa M. Kerrigan;A. Ney;N. Jöns;D. Rogalla;Stefan Cwik;H. Becker
通讯作者：
D. Peeters;Dereje H. Taffa;Marissa M. Kerrigan;A. Ney;N. Jöns;D. Rogalla;Stefan Cwik;H. Becker