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所有印刷的光电模块/光伏小模块用于水分

Zhenhua Xu^1,2, Lang Chen³, Christoph J Brabec⁴

¹School of Materials Science and Engineering, NingboTech University, Ningbo, 315100, China.

|June 29, 2023

概括

这项研究推进了使用BiI3补充剂进行高效的光电化学水分裂的印刷木瓦纳酸盐光电极. 优化的材料实现了太阳能到的高效率和更好的稳定性,这对于具有成本效益的生产至关重要.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
可再生能源可再生能源是可再生能源.

背景情况:

通过光电化学 (PEC) 分解水,使用 bismuth vanadate (BiVO4) 光电极,是实现成本效益高的气生产的一个有前途的途径.
挑战包括光吸收和电荷转移之间的权衡,以及长期稳定性差,限制PEC效率.
打印大面积的BiVO4光电解极对于可扩展性是可取的,但需要优化制造方法.

研究的目的:

开发一种先进的溶液加工配方,用于打印具有增强PEC性能和稳定性的BiVO4光电极.
为了研究BIO3兴奋剂对印刷BIO4膜中的晶体生长,电荷转移和光电流生成的影响.
分析影响BiVO4光阳极长期稳定的降解机制.

主要方法:

用BiI3补充剂处理BiVO4薄膜的溶液沉积,控制晶体的生长和方向.
薄膜形态,晶体结构 (优先 (001) 方向) 和表面性能的表征.
用矿太阳能模块制造并联设备,并在AM 1.5 G照明下评估PEC水分性能.

主要成果:

BiVO4膜表现出偏好的 (001) 方向和纳米线形态,促进更快的电荷转移.
经过优化后的光电极实现了5.88 mA cm-2的光电流密度,在双重配置中零偏差.
获得了7.02%的太阳能效率,用于无偏的水分裂,稳定性分析揭示了降解途径.

结论:

用BiI3添加剂,溶液加工的BiVO4光电极显示了有效和成本效益的PEC水分的巨大潜力.
可控的晶体生长和纳米晶体形态是改善光电流和电荷转移的关键.
了解降解机制,如损失和Bi2O3丰富,对于提高设备的长期稳定性至关重要.

关键词:

在 BiVO4 中使用 BiVO4.大面积的大面积大面积双联设备是双联设备.水的分裂是水的分裂.

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