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可逆金属电沉积 (RME) 技术凭借其在全太阳光谱范围内的高光学对比度和中性色显示，在智能窗与动态热管理领域展现出重要的应用潜力。本研究旨在解决银 (Ag) 基RME器件中因强配位作用导致的驱动电压大的问题。通过在铟锡氧化物 (ITO) 表面构筑二氧化钛 (TiO2)纳米颗粒界面修饰层，开发出一种兼具低驱动电压与多模态切换特性的电沉积器件。试验表明：TiO2修饰层有效调节了电极表面的能级匹配，使功函数从4.15 eV降低至3.71 eV，显著降低了电子注入能垒并优化了还原过电位；同时，TiO2纳米层增加了电极的比表面积与表面粗糙度，提供了丰富的成核活性位点，诱导银颗粒实现均匀沉积。基于该界面修饰层的器件展现出80.6%的最大光学调制幅度，并实现了透明态、黑色着色态与镜面反射态之间的可逆切换。器件着色响应时间从36.0 s显著缩短至8.0 s，着色效率提升至79.8 cm2/C，且在1000圈循环后仍保持良好的电化学可逆性，为高性能可逆金属电沉积智能窗的实用化提供了可靠的解决方案。
Abstract：The Reversible metal electrodeposition (RME) technology has demonstrated significant potential in the fields of smart windows and dynamic thermal management， owing to its high optical contrast across the full solar spectrum and neutral-colored display. This study aims to address the challenge of high driving voltages in silver (Ag)-based RME devices caused by strong coordination effects. By constructing a titanium dioxide (TiO2) nanoparticle interfacial modification layer on the indium tin oxide (ITO) surface， an electrodeposition device with both low driving voltage and multi-modal switching characteristics was developed. Experimental results indicate that the TiO2 modification layer effectively regulates the energy level matching at the electrode surface， reducing the work function from 4.15 eV to 3.71 eV. This reduction significantly lowers the electron injection barrier and optimizes the reduction overpotential. Furthermore， the TiO2 nanolayer increases the specific surface area and surface roughness of the electrode， providing abundant active nucleation sites that induce uniform silver deposition. The device based on this interfacial modification layer exhibits a maximum optical modulation of 80.6% and achieves reversible switching between transparent， black tinted， and specular reflective states. The coloration response time was significantly shortened from 36.0 s to 8.0 s， with the coloration efficiency increasing to 79.8 cm2/C. Moreover， the device maintains excellent electrochemical reversibility after 1000 cycles， providing a reliable solution for the practical application of high-performance RME smart windows.
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基本信息:
DOI：10.19886/j.cnki.dhdz.2026.0189
中图分类号:TQ153
引用信息:
[1]相吉凯,李克睿.基于TiO_(2)界面修饰层的可逆银金属电沉积器件[J].东华大学学报(自然科学版)().DOI:10.19886/j.cnki.dhdz.2026.0189.
基金信息:
国家自然科学基金面上项目（52473168）
2026-07-15
2026-07-15
2026-07-15