Article
Materials Science, Multidisciplinary
Kai Sheng, Bin Xue, Jianming Zheng, Chunye Xu
Summary: The hybrid device integrates both electrochromic and metal electrodepositing effects, demonstrating three color states with high optical modulation and fast response time. The specially designed electrolyte provides essential elements for the device to function properly, enabling it to break the limitations of conventional electrochromic devices.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Tuan Van Nguyen, Ha Huu Do, Wenwu Guo, Mahider Tekalne, Quyet Van Le, Thang Phan Nguyen, Jin Hyuk Cho, Sang Hyun Ahn, Soo Young Kim
Summary: The study proposes a new strategy to prolong the stability and improve the efficiency of reversible metal electrodeposition (RME) devices by using tungsten oxide to modify the surface of a transparent conductive electrode. This modification successfully prepared superior, stable, and highly effective devices with significantly increased lifetime and improved performance.
ELECTRONIC MATERIALS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Xiaoyu Guo, Jingwei Chen, Alice Lee-Sie Eh, Wei Church Poh, Fan Jiang, Feng Jiang, Juntong Chen, Pooi See Lee
Summary: This study presents a heat-insulating black electrochromic device (ECD) with a gel electrolyte, operating through reversible Ni-Cu electrodeposition and dissolution. The device demonstrates good cycling stability and fast coloration/bleaching times. It can switch between transparent and opaque states, efficiently blocking visible light and infrared radiation, making it suitable for energy management, indoor human health, and indoor farming.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Byung Gon Kim, Sang Wook Park, Hong Jun Choi, Jun-Woo Park, Hongkyung Lee, Jeong-Hee Choi
Summary: To address the issues in zinc-manganese dioxide batteries, an acid-treated carbon supportive layer (aCSL) is proposed to integrate into the MnO2 cathode, providing additional reaction sites, increasing active surface area, and facilitating charge transfer. Compared to conventional cell configurations, the aCSL-integrated Zn-MnO2 cell shows superior cycling performance, with over 3000 cycles and minimal capacity decay (85.6% retention) at a current of 3 A g(-1).
Article
Chemistry, Physical
Yuanlin Xu, Chen Wang, Yu Shi, Guoxing Miao, Jing Fu, Yunhui Huang
Summary: The use of self-preserving pitted surface structure can effectively reduce dendrite growth issues in Zn metal anodes during stripping/plating cycles, improving electrode kinetics and homogeneous deposition. After cycles, the electrode surface can recover its pitted topography, maintaining excellent cyclic reversibility.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Physics, Multidisciplinary
Kaushal H. Parmar, Vishesh Manjunath, Santosh Bimli, Parameshwar R. Chikate, Ranjit A. Patil, Yuan-Ron Ma, Rupesh S. Devan
Summary: Nickel oxide (NiO) nanostructures were synthesized and deposited on conducting glass substrates by hot-filament metal vapor deposition (HFMVD). The NiO exhibited good electrochromic behavior with high reversibility, short coloration and bleaching times.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Engineering, Environmental
Daoyi He, Chunhua Su, Chuanxi Zhao, Genghua Yan, Zhijuan Zhao, Wenjie Mai
Summary: This study successfully developed a reversible metal electrodeposition device with multiple optical states and revealed its superior cycling stability and color retention stability. The metal film deposited by the step-potential method exhibited better performance and has the potential application in light modulating devices, such as smart windows and information displays.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Chung-Wen Kuo, Jui-Cheng Chang, Jeng-Kuei Chang, Sheng-Wei Huang, Pei-Ying Lee, Tzi-Yi Wu
Summary: A novel 1,3-bis(carbazol-9-yl)benzene derivative was synthesized for the preparation of multicolor copolymer films with color transitions from reduced to oxidized states. The polymeric films exhibited good performance in electrochromic devices based on spectral studies and efficiency evaluations.
Article
Materials Science, Multidisciplinary
Sven Macher, Marco Schott, Martin Dontigny, Abdelbast Guerfi, Karim Zaghib, Uwe Posset, Peer Loebmann
Summary: The study focuses on large-area electrochromic devices based on a cathodically-coloring PEDOT derivative and anodically-coloring PB, showing superior optical properties and cycling stability, as well as the scalability of the S2S lamination process. This technology holds great potential for commercial applications in flexible ECDs.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Materials Science, Multidisciplinary
Jingling Li, Zifeng Zeng, Haibo Rong, Xiaofei Dong
Summary: This study proposes a novel strategy to improve the electrochromic performance of tungsten trioxide (WO3) by inserting a polyvinylidene fluoride (PVDF) interlayer between WO3 and FTO substrate for interface modification. The PVDF interlayer can improve the ionic diffusion of WO3 and effectively control the electron injection, leading to enhanced coloration efficiency and cyclic stability.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ling Wang, Xiuling Jiao, Dairong Chen, Ting Wang
Summary: The solar water-heating (SWH) smart window integrates traditional electrochromic windows with a water flow system to provide dynamic daylight modulation while harvesting solar energy for water heating. This innovative design reduces energy consumption and may offer new insights for next-generation green buildings.
Article
Energy & Fuels
Shun Uji, Shunsuke Kimura, Kazuki Nakamura, Norihisa Kobayashi
Summary: We studied a multicolor electrochromic (EC) device that uses silver (Ag) deposition and is able to reversibly represent multiple colors. The coloration of the device is based on localized surface plasmon resonance (LSPR) of Ag nanoparticles (AgNPs). In this study, dark-field microscopy (DFM) was used for the first time to observe the changes in LSPR of AgNPs during the coloration process of the EC device. The obtained light scattering spectra provide detailed information on the LSPR induced by AgNPs in comparison with conventional absorption spectrum measurements.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Analytical
Chung-Wen Kuo, Jui-Cheng Chang, Jeng-Kuei Chang, Wei-Che Hsieh, Pei-Ying Lee, Tzi-Yi Wu
Summary: This study investigated the electrochromic performance of polymers containing CzBN and BTP deposited on ITO electrodes. The P(CzBN-co-BTP4) film exhibited distinct electrochromic behaviors with different colors at different potentials, showing high transmittance change and coloration efficiency. By constructing six dual-layer organic electrochromic devices, it was found that polymers containing CzBN could serve as promising high-contrast and rapid-response electrodes for ECD applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Yaozhi Liu, Zengming Qin, Xianpeng Yang, Jie Liu, Xiao-Xia Liu, Xiaoqi Sun
Summary: The cycling stability of MnO2 cathodes in aqueous zinc batteries is highly dependent on the presence of Mn2+ additives in the electrolyte. However, this study demonstrates a voltage-induced lattice contraction mechanism that enables stable cycling of a-MnO2 in Mn2+-free electrolytes. The accumulation of electrochemically inactive parts is found to be the main cause of capacity decay during cycling at a top voltage cut-off of 1.8 V. By extending the voltage limit to 2.2 V and implementing a voltage hold process during the initial charge, the inactive parts are activated to undergo reversible two-electron transfer reactions. The high voltage induces lattice contraction, stabilizes structural water, enhances Mn release, and generates more oxygen vacancies, weakening the Mn binding in the lattice. As a result, MnO2 achieves a capacity of 323 mAh g 1 with 94.6% retention over 300 cycles (>1800 h) at 0.1 A g 1 in a Mn2+-free electrolyte of 3 M ZnSO4. This work provides an effective approach to achieve stable cycling of MnO2 cathodes in zinc batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Yangyang Wang, Xue Wang, Bingcheng Ge, Jianxin Guo, Carlos Fernandez, Qiuming Peng
Summary: The MXene-MnO2 composite film cathode in Li-CO2 batteries demonstrates good cycle stability, high specific capacity, and lower overpotential, primarily due to its enhanced electrochemical properties such as high electrical conductivity and porous structure, increased Li ion adsorption facilitated by the replacement of Mn by Ti, and a large number of active sites exposed by the synergistic effect of MXene and MnO2.
ACS APPLIED ENERGY MATERIALS
(2021)
