太阳能半导体冰箱的性能分析

介绍了太阳能电池驱动的半导体制冷冰箱系统的基本结构,建立了太阳能电池驱动的半导体冰箱的理论模型,并对系统性能进行了数值模拟,分析了太阳辐射强度和环境风速的变化对太阳能半导体制冷系统性能的影响。研究表明针对设计的太阳能半导体制冷系统,在某一太阳辐射强度下,系统的制冷量输出最大,并且在辐射强度200～1000W/m^2时,制冷系数随着太阳辐射强度的减小而减小。在给定的工况下,环境风速增加使得系统工作电流朝靠近最佳工作电流数值方向增加。     

太阳能热电空调理论研究与性能分析

从能源利用及环境保护角度出发，设计了一种全新的太阳能热电空调，介绍了它的系统组成特点、工作原理，并分析了影响其性能的因素。     

石墨烯/n-Si肖特基结太阳能电池的性能限制因素及效率提升方法

石墨烯是一种新型的零带隙、半金属材料,具有高透光率,良好的电导率,高稳定性及力学性能,可替代传统的ITO用于制备新一代石墨烯/n-Si肖特基结太阳能电池。详细表述了目前石墨烯/n-Si肖特基结太阳能电池的研究进展,重点总结分析了影响石墨烯/n-Si肖特基结太阳能电池性能的原因及相关的优化方法,为将来进一步对石墨烯/n-Si肖特基结太阳能电池的研究与应用提供借鉴。     

Solar Energy Storage Using a Cu2O-TiO2 Photocathode in a Lithium Battery

A Cu₂O-TiO₂ photoelectrode is pr+oposed for simultaneous solar light energy harvesting and storing of electrochemical energy in an adapted lithium coin cell. The p-type Cu₂O semiconductor layer is the light harvester component of the photoelectrode and the TiO₂ film performs as the capacitive layer. The rationale of the energy scheme shows that the photocharges generated in the Cu₂O semiconductor induce lithiation/delithiation processes in the TiO₂ film as a function of the applied bias voltage and light power. A photorechargeable lithium button cell drilled on one side recharges with visible white light in ≈9 h in open circuit. It provides an energy density of ≈150 mAh g⁻¹ at 0.1 C discharge current in dark, and the overall efficiency is 0.29%. This work draws a new approach for the photoelectrode role to advance in monolithic rechargeable batteries.     

光蓄互补系统接入对配电网供电可靠性的影响

光蓄互补系统接入对配网的供电可靠性有较大影响.首先,介绍了典型系统的负荷曲线和光伏出力曲线特点,以及储能运行策略、配网供电可靠性评估指标和评估方法;然后,讨论了不同出力光伏系统、不同容量储能和光蓄互补系统接入对负荷曲线和配网供电可靠性的影响.最后,比较并分析了光伏、储能和光蓄互补系统对配电网供电可靠性的不同影响.研究结果可为光蓄互补系统的容量优化配置提供参考.     

Prof iciency Testing Project on Standard Solar Battery Completed

<正>Themeasurement on short-circuit current of standard solar battery at STC(CNCA-14-B15),a proficiency testing project of Certification and Accreditation Administration of China,was recently completed by NIM.It is the first attempt for China to carry out the proficiency testing of standard solar battery in the photovoltaic     

Toward an Aqueous Solar Battery: Direct Electrochemical Storage of Solar Energy in Carbon Nitrides

Graphitic carbon nitrides have emerged as an earth‐abundant family of polymeric materials for solar energy conversion. Herein, a 2D cyanamide‐functionalized polyheptazine imide (NCN‐PHI) is reported, which for the first time enables the synergistic coupling of two key functions of energy conversion within one single material: light harvesting and electrical energy storage. Photo‐electrochemical measurements in aqueous electrolytes reveal the underlying mechanism of this “solar battery” material: the charge storage in NCN‐PHI is based on the photoreduction of the carbon nitride backbone and charge compensation is realized by adsorption of alkali metal ions within the NCN‐PHI layers and at the solution interface. The photoreduced carbon nitride can thus be described as a battery anode operating as a pseudocapacitor, which can store light‐induced charge in the form of long‐lived, “trapped” electrons for hours. Importantly, the potential window of this process is not limited by the water reduction reaction due to the high intrinsic overpotential of carbon nitrides for hydrogen evolution, potentially enabling new applications for aqueous batteries. Thus, the feasibility of light‐induced electrical energy storage and release on demand by a one‐component light‐charged battery anode is demonstrated, which provides a sustainable solution to overcome the intermittency of solar radiation.     

太阳能硅薄膜电池的研究进展

阐述了太阳能电池发电原理和硅系太阳能薄膜电池（单晶硅、多晶硅和非晶硅）的结构、基本原理和特点。介绍了硅系太阳能薄膜电池的发展现状,同时对其优缺点进行了比较,并分析了硅系太阳能薄膜电池的发展前景。     

Cell化生产线对生产效率提高的案例

Cell化生产一方面可通过强制平衡提升线平衡率、消除无价值劳动时间等方法从而提升工人的效率,另一方面又可通过提升产线的空间利用率,减少在制品来节约生产与储存空间.经实例验证,导入Cell化生产,能将人的生产率提高30%,生产空间节约50%以上.     

半透明太阳能电池的热力学极限效率研究

半透明太阳能电池可充分利用现代建筑的太阳照射面积, 具有广阔的应用前景, 其热力学极限效率是重要的基础问题。本工作将已有研究中用于建筑窗户的无色半透明太阳能电池拓展至可安装于建筑幕墙表面的彩色半透明太阳能电池, 基于细致平衡原理计算其热力学极限效率, 以便更全面地描绘半透明太阳能电池在建筑一体化应用的前景。结果表明, 用于窗户的无色半透明太阳能电池的极限效率为18.1%, 而安装于蓝色建筑幕墙表面的半透明太阳能电池的极限效率高达28.3%, 提升了10个百分点。本研究的彩色半透明太阳能电池扩大了可利用的太阳照射面积, 有望弥补太阳能能量密度低的问题。研究结果可以指导选择合适的半导体材料和设计新材料。     

太阳能电池生产系统中设备综合效能研究

讨论了现有太阳能电池生产系统改进的一个实例.OEE已作为制造企业单台设备运行绩效的一种测量指标,并以此提高该设备的效能.在生产系统中测量一台设备的效能显然是不够的.结合OEE、OTE和TOC理论来分析由多台设备组成的太阳能电池生产系统.在此生产系统中,先计算OTE和OFE的值,并以此确定该系统的瓶颈.通过瓶颈分析,提出5种可行的解决方案来改进生产系统.采用WTTNESS软件建模仿真,发现其中的1种方案能使该生产系统的效能显著提高.     

Nanostructured Complex Cobalt Oxides as Potential Materials for Solar Thermoelectric Power Generators

Thermoelectrically active and stable perovskite‐type materials e.g. La_1–xCa_xCoO₃ (0<x<0.4), La_1–xCa_xCo_0.99Ti_0.01O₃ (0<x<0.2), and Ca₃Co₄O₉ have been successfully synthesized using selected precursor compounds. This soft chemistry route allows the control of the elemental composition from 1% level to 50% substitution. Accordingly the Co valency and therefore the transport properties of the product phases can be controlled. It has been found that the pH of the precursor solution results in a pronounced influence on the morphology of the products. The thermoelectric values measured of the nanostructured “misfit cobaltite Ca₃Co₄O₉” shows a Seebeck coefficient of S_300K ～ + 123 μVK^–1, and a resistivity of ρ ～ 1.9 mΩ cm at room temperature, which is comparable to the reported value for single crystals. Ca‐ and Ti‐substituted LaCoO₃ reveal thermopower values in the range from S_300K ～ + 70 to + 180 μVK^–1. The electrical conductivity of the nanostructured compounds is high in spite of the fact that the grain boundary influence is increasing. The Seebeck coefficient values of the products are positive in the whole temperature range indicating p‐type conduction.     

特定气候提高效率的方案

本文讨论了在特定气候下进一步提高房间空调器效率的选择方案。     

Self-Repairing Tin-Based Perovskite Solar Cells with a Breakthrough Efficiency Over 11%

The development of tin (Sn)-based perovskite solar cells (PSCs) is hindered by their lower power conversion efficiency and poorer stability compared to the lead-based ones, which arise from the easy oxidation of Sn²⁺ to Sn⁴⁺. Herein, phenylhydrazine hydrochloride (PHCl) is introduced into FASnI₃ (FA = NH₂CH  NH₂⁺) perovskite films to reduce the existing Sn⁴⁺ and prevent the further degradation of FASnI₃, since PHCl has a reductive hydrazino group and a hydrophobic phenyl group. Consequently, the device achieves a record power conversion efficiency of 11.4% for lead-free PSCs. Besides, the unencapsulated device displays almost no efficiency reduction in a glove box over 110 days and shows efficiency recovery after being exposed to air, due to a proposed self-repairing trap state passivation process.     

太阳能电池光电转换膜微观结构的高分辨电镜研究

文章提出一种把薄膜或多层膜制成用透射电镜可以观察层间结构的样品的新技术。用高分辨电镜研究了太阳能电池Si—SnO2系光电转换膜的微观结构。