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首页> 外文期刊>Advanced energy materials >Geogrid-Inspired Nanostructure to Reinforce a CuxZnySnzS Nanowall Electrode for High-Stability Electrochemical Energy Conversion Devices
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Geogrid-Inspired Nanostructure to Reinforce a CuxZnySnzS Nanowall Electrode for High-Stability Electrochemical Energy Conversion Devices

机译：受土工格栅启发的纳米结构可增强用于高稳定性电化学能量转换装置的CuxZnySnzS纳米壁电极

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摘要

Inspired by geogrids commonly applied in construction engineering to reinforce side slopes and retaining walls, the use of a nano-geogrid to reinforce a CuxZnySnzS (CZTS) nanowall electrode for application in electrochemical reactions is demonstrated. The CZTS nanowall electrode reinforced by the nano-geogrid (denoted as NWD) shows not only remarkable mechanical and electrochemical stability but also considerable electrochemical performances. The NWD demonstrated as a counter electrode in a dye-sensitized solar cell shows a power conversion efficiency of 7.44 +/- 0.04%, comparable with the device using Pt as electrode, and also significantly improves device stability as compared with that afforded by an electrode comprising a CZTS nanowall without the nano-geogrid (denoted as NOD). In addition, applying the NWD electrode as a cathode in photo-electrochemical hydrogen evolution reactions (HERs) yields a photocurrent density of -10 mA cm(-2) at -0.162 V (vs RHE) under AM 1.5 illumination. Moreover, when HERs are conducted under extreme conditions, the NWD electrode remains intact, whereas the NOD electrode is completely peeled off after 10 min of reaction. Therefore, the concept of using a mimetic rational nanostructure could pave the way for the possibility of improving the performance and stability of various devices.
机译：受通常在建筑工程中用于加固边坡和挡土墙的土工格栅的启发，已证明了使用纳米土工格栅来加固用于电化学反应的CuxZnySnzS（CZTS）纳米壁电极。由纳米geogrid（表示为NWD）增强的CZTS纳米壁电极不仅显示出显着的机械和电化学稳定性，而且还显示出可观的电化学性能。在染料敏化太阳能电池中作为对电极展示的NWD，其功率转换效率为7.44 +/- 0.04％，与使用Pt作为电极的器件相当，并且与电极相比，其器件稳定性也大大提高包含不含纳米geogrid（表示为NOD）的CZTS纳米壁。此外，将NWD电极用作光电化学氢释放反应（HERs）的阴极在AM 1.5照明下在-0.162 V（vs RHE）下产生的光电流密度为-10 mA cm（-2）。此外，当在极端条件下进行HER时，NWD电极保持完好无损，而反应10分钟后，NOD电极会完全剥离。因此，使用模拟的合理纳米结构的概念可以为改善各种器件的性能和稳定性的可能性铺平道路。

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