-二元合金作为染料敏感太阳能电池中的对电极
N A S Aziz1,2, M Y A Rahman1, A A Umar1
1Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. mohd.yusri@ukm.edu.my.
Dalton transactions (Cambridge, England : 2003)
|November 24, 2023
概括
本研究介绍了用于染料敏感太阳能电池 (DSSCs) 的- (Ir-Pd) 双合金对电极 (CE). 通过液相沉积制成的Ir-Pd CE与金相比表现出更高的性能,实现了更高的功率转换效率.
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:
- 染料敏感太阳能电池 (DSSC) 需要高效的对应电极 (CE) 来进行电荷传输.
- (Pt) 是一种常见的CE材料,但价格昂贵且稀缺.
- 开发替代,具有成本效益的CE材料对于DSSC的商业化至关重要.
研究的目的:
- 研究- (Ir-Pd) 双合金作为DSSC中的CE的潜力.
- 通过改变六二酸的度来优化Ir-Pd CE的特性.
- 为了比较Ir-Pd CE与传统Pt CE的性能.
主要方法:
- 使用液相沉积 (LPD) 技术合成了Ir-Pd合金CE.
- 研究了六二酸 ((IV) 酸盐度对Ir-Pd特性的影响.
- 使用X射线衍射 (XRD) 分析了Ir-Pd合金的相位和粒度.
- 评估了DSSC性能,包括功率转换效率 (PCE),电荷转移电阻 (Rct),重组电阻 (Rcr),载波器寿命 (τ) 和事件光子转换效率 (IPCE).
主要成果:
- XRD分析证实了占主导地位的Ir-Pd阶段,颗粒大小增加到0.7mM的最佳H2Cl6Ir·H2O度.
- 在Ir-Pd合金中的含量 (%重量) 随着前体度的增加而增加.
- 具有Ir-Pd CE (0.7 mM H2Cl6Ir·H2O) 的DSSC获得了5.84%的PCE,超过了Pt CE (5.04%).
- 与Pt.相比,优化的Ir-Pd CE表现出较低的Rct,较高的Rcr,较长的t,以及较高的Jpc和IPCE.
结论:
- 双 Ir-Pd 合金是一种有希望的,具有成本效益的替代品,用于 Pt 作为 DSSC 的 CE.
- H2Cl6Ir·H2O的度显著影响了Ir-Pd合金的性能和DSSC性能.
- 优化的Ir-Pd CEs表现出增强的电化学特性,从而提高了DSSC的效率.
相关概念视频
02:47Voltaic/Galvanic Cells
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
03:12Batteries and Fuel Cells
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
02:51Metal-Ligand Bonds
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...