Robust Cu-Au alloy nanowires flexible transparent electrode for asymmetric electrochromic energy storage device

Zhang, He; Tian, Yanhong; Wang, Shang; Feng, Jie; Chen, Hang; Wang, Chenxi; Ma, Jingxuan; Hu, Xuanyi; Zheng, Zhen; Dong, Huijuan

doi:10.1016/j.cej.2021.131438

Cited by 40 publications

(22 citation statements)

References 77 publications

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“…As for pristine SiO x , by contrast, the Raman spectrum exhibits characteristic bands for amorphous structure merely: TA band (∼148 cm –1 , corresponding to the bond-bending vibration) and TO band (∼481 cm –1 , the stretching vibration mode) . The absence of Bragg reflections for carbon indicates the nongraphitic microstructure of the coated carbon layer, which is consistent with the coexistence of a D band (∼1356 cm –1 , related to the disorder and defect induced mode) and G band (∼1605 cm –1 , the in-plane vibrational mode) in the Raman spectrum (inset in Figure f). − Despite the enhancement of carbon coating toward performance in multiple aspects, excessive weight will dilute the specific capacity of SiO x @C. Through a thermogravimetric analysis (TGA), carbon takes ∼4.8 wt % of SiO x @C (Figure g), which is supposed to appropriately balance between promoting performance and diluting capacity.…”

Section: Results and Discussionsupporting

confidence: 62%

Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery

Sun

Hao³

et al. 2022

ACS Appl. Mater. Interfaces

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SiO x -based anode materials are considered to be promising and have been gradually commercialized due to their high specific capacity as well as the acceptable volume change during lithiation/delithiation and preferable cycling stability compared to that of Si. Nevertheless, their inherently low Coulombic efficiency hinders the large-scale application. Up to now, researchers have paid much attention to the initial Coulombic efficiency and developed a series of effective prelithiation strategies. However, the subsequent cycles (focusing on the 2nd to 10th), during which the SiO x anode suffers great lithium consumption as well, have received scarcely any concerns. In this work, a strategy of high-temperature (50 °C) initial charge after an overcapacity prelithiation for a SiO x -based full-cell battery is proposed. As high temperature can promote the reaction between lithium and the SiO 2 matrix of SiO x , SiO 2 will experience a one-step thorough reduction rather than gradual conversion in subsequent cycles, improving the subsequent Coulombic efficiencies (SCEs) accordingly. Overcapacity prelithiation can be achieved safely at 50 °C without Li metal depositon, just enough to meet the more initial lithium demand of anode at 50 °C. Furthermore, the initial deeper reduction of SiO 2 will release extra Si, improving the reversible capacity consequently. With the 50 °C initial charge after an overcapacity prelithiation, the full-cell battery exhibits considerable capacity retention as expected. This work raises concerns on SCEs of SiO x -based anode innovatively, providing a feasible avenue for improving the capacity retention of a SiO x -based full-cell battery.

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Section: Results and Discussionsupporting

confidence: 62%

Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery

Sun

Hao³

et al. 2022

ACS Appl. Mater. Interfaces

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“…In the field of ECSCs, the use of tungsten oxide nanostructures for flexible ECSCs is increasingly reported, and flexible wearables seem to be a major trend, but the mechanical properties of ITO are weak, and the flexible use will cause the conductivity of the conductive electrodes to decrease. Pure metal nanowire electrodes have the same flexibility advantages as tungsten oxide nanowire electrodes, and their combined use would greatly increase the device performance of flexible ECSCs Zhang [109] further designed a copper-gold alloy nanonetwork as a flexible transparent electrode on a tungsten oxide nanostructure, as shown in Figure 9. The device assembled from polyaniline and WO 3 film by electrochemical synthesis on the metal grid had a coloring efficiency of 153.77 cm 2 /C and a surface capacitance of 2.29 mF/cm 2 .…”

Section: Conductive Electrodesmentioning

confidence: 99%

Application of Tungsten-Oxide-Based Electrochromic Devices for Supercapacitors

Yan

Ning

et al. 2022

ASI

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For making full use of the discoloration function of electrochromic (EC) devices and better show the charge and discharge states of supercapacitors (SCs), electrochromic supercapacitors (ECSCs) have attracted much attention and expectations in recent years. The research progress of tungsten-oxide-based electrochromic supercapacitors (ECSCs) in recent years is reviewed in this paper. Nanostructured tungsten oxide is widely used to facilitate ion implantation/extraction and increase the porosity of the electrode. The low-dimensional nanostructured tungsten oxide was compared in four respects: material scale, electrode life, coloring efficiency, and specific capacitance. Due to the mechanics and ductility of nano-tungsten oxide electrodes, they are very suitable for the preparation of flexible ECSCs. With the application of an organic protective layer and metal nanowire conductive electrode, the device has higher coloring efficiency and a lower activation voltage. Finally, this paper indicates that in the future, WO3-based ECSCs will develop in the direction of self-supporting power supply to meet the needs of use.

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“…12F) and high areal capacitance of 12.12 mF/cm 2 . In another study, Dong and co-workers reported a facile electrochemical method to produce robust Cu-Au alloy NWs network lms (Zhang et al 2021). These alloy NWs network lms presented high optical-electrical performance (transmittance of 87% with a sheet resistance of 23.2 Ω/sq), excellent exibility and outstanding electrochemical stability.…”

Section: Au Nw Tcesmentioning

confidence: 99%

Recent advances of metal nanowire based transparent conductive electrodes for flexible chromatic devices

Huang

Liu

Yang

et al. 2022

Preprint

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Transparent conductive electrodes (TCEs) that can maintain structure integrity and remain highly electrically conductive under large mechanical deformations are strongly desired and urgently needed in flexible optoelectronics. Nevertheless, the TCE technology in flexible electronics remains at a standstill, in which brittle indium tin oxide (ITO) is main material being used. Metal nanowires (NWs) networks with high optoelectronic performance as next-generation TCEs have widespread applications in flexible electronics, such as smart windows, touch panels, solar cells and flat displays. Here we review the latest advances that have been made for metal NWs TCEs, including the strategies for the synthesis of metal NWs, metal NWs films assembly via different solution-based processes and their practical applications as electrodes in various flexible chromic devices, as well as discuss their challenges and perspectives for the future practice.

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Robust Cu-Au alloy nanowires flexible transparent electrode for asymmetric electrochromic energy storage device

Cited by 40 publications

References 77 publications

Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery

Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery

Application of Tungsten-Oxide-Based Electrochromic Devices for Supercapacitors

Recent advances of metal nanowire based transparent conductive electrodes for flexible chromatic devices

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Robust Cu-Au alloy nanowires flexible transparent electrode for asymmetric electrochromic energy storage device

Cited by 40 publications

References 77 publications

Focusing on the Subsequent Coulombic Efficiencies of SiOx: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiOx-Based Full-Cell Battery

Focusing on the Subsequent Coulombic Efficiencies of SiOx: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiOx-Based Full-Cell Battery

Application of Tungsten-Oxide-Based Electrochromic Devices for Supercapacitors

Recent advances of metal nanowire based transparent conductive electrodes for flexible chromatic devices

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Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery

Focusing on the Subsequent Coulombic Efficiencies of SiO_x: Initial High-Temperature Charge after Over-Capacity Prelithiation for High-Efficiency SiO_x-Based Full-Cell Battery