电致变色
材料科学
光电子学
电致变色装置
电化学
电极
储能
纳米技术
化学
功率(物理)
量子力学
物理
物理化学
作者
Pengyang Lei,Jinhui Wang,Yi Gao,Chengyu Hu,Siyu Zhang,Xingrui Tong,Zhuanpei Wang,Yuelin Gao,Guofa Cai
标识
DOI:10.1007/s40820-022-01002-4
摘要
Exploring materials with high electrochemical activity is of keen interest for electrochemistry-controlled optical and energy storage devices. However, it remains a great challenge for transition metal oxides to meet this feature due to their low electron conductivity and insufficient reaction sites. Here, we propose a type of transition metal phosphate (NiHPO4·3H2O, NHP) by a facile and scalable electrodeposition method, which can achieve the capability of efficient ion accommodation and injection/extraction for electrochromic energy storage applications. Specifically, the NHP film with an ultra-high transmittance (approach to 100%) achieves a large optical modulation (90.8% at 500 nm), high coloration efficiency (75.4 cm2 C-1 at 500 nm), and a high specific capacity of 47.8 mAh g-1 at 0.4 A g-1. Furthermore, the transformation mechanism of NHP upon electrochemical reaction is systematically elucidated using in situ and ex situ techniques. Ultimately, a large-area electrochromic smart window with 100 cm2 is constructed based on the NHP electrode, displaying superior electrochromic energy storage performance in regulating natural light and storing electrical charges. Our findings may open up new strategies for developing advanced electrochromic energy storage materials and smart windows.
科研通智能强力驱动
Strongly Powered by AbleSci AI