<i>In situ</i> electrochromic efficiency of a nickel oxide thin film: origin of electrochemical process and electrochromic degradation

Liu, Qirong; Chen, Qianqian; Zhang, Qianqian; Xiao, Yu; Zhong, Xiaolan; Dong, Guobo; Delplancke‐Ogletree, Marie‐Paule; Terryn, Herman; Baert, Kitty; Reniers, François; Diao, Xungang

doi:10.1039/c7tc04696k

Cited by 90 publications

(56 citation statements)

References 48 publications

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“…The implanted ions are limited by the charge layer in the crystal lattice. Therefore, accumulating with the increasing of the number of cy cles, the reversibility of the cycle deteriorates leading to the elec trochromic performance declining [4,20,32,42]. Fig.…”

Section: Tablementioning

confidence: 99%

Optimized properties of innovative ElectroChromic Device using ITO / Ag / ITO electrodes

Wang

Barnabé

Thimont

et al. 2019

Electrochimica Acta

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The "Oielectric/Metal/Oielectric" (OMO) stacked films being used as transparent and conductive (TC) electrodes, have demonstrated excellent application in the ElectroChromic (EC) process and devices. In this work, multilayers (IAI) made of 50 nm of Indium Tin Oxide (IT0)/5 nm of metallic sil ver (Ag)/30 nm of ITO that exhibit band gap, low resistance of 7.4 Q and the high figure of merit of 9.9 x 10 3 Q 1 were introduced in a complete five layer Glass/IAI/NiOx/LlCIO4 PC PMMA/WO3/IAI/Glass ElectroChromic De vice (ECO). The single IAI electrode as well as the two actives EC layers Glass/IAI/Niûx and Glass/IAI{WO 3 were firstly characterized for their TC and EC properties respectively. Then, the EC properties of the complete five layer ECO were analyzed. Fast response time (2.02 s for the bleaching and 225 s for complete coloration), wide optical modulation in the visible light region (-55% at 550 nm), long lifetime (more than 6000 s), large capacity and good stability as well as high coloration efficiency (31.7 cm 2 C 1) were obtained The improved EC performance of ECO were related to the good electrical and optical properties of IAI electrode.

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Section: Tablementioning

confidence: 99%

Optimized properties of innovative ElectroChromic Device using ITO / Ag / ITO electrodes

Wang

Barnabé

Thimont

et al. 2019

Electrochimica Acta

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“…The XRD pattern revealed that NiO films deposited at DC powers of 100 and 150 W exhibit the polycrystallinity with a standard face-centered cubic structure which matching well with the JCPDS card No. 47-1049 of NiO [7]. The polycrystalline films show a well-defined peaks at 2 = 37.04 ∘ , 43.28 ∘ , 62.81 ∘ , and 75.47 ∘ which corresponded to the reflection of (111), (200), (220), and (311) planes, respectively.…”

Section: Resultsmentioning

confidence: 95%

“…Nickel oxide shows a great promise as an active electrochromic material due to the high coloration efficiency (CE), good cyclic reversibility, and low cost [4,5]. Thin film of NiO is widely used as the counter electrode layers in EC devices [4,6,7]. Various techniques have been used to deposit NiO thin films [6,8,9], but the sputtering technique is the most widely investigated, because the large-scale deposition sets are available, and high-quality films are obtained [4,7,10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sputtering Power on Optical Properties of Nickel Oxide Electrochromic Thin Films

et al. 2020

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The preparation and characterization of nickel oxide (NiO) thin film for electrochromic smart window applications are studied. The NiO thin film was prepared by the DC magnetron sputtering from a pure nickel target. The sputtering power was varies in the interval 50–200 W. The crystallinity and physical morphology of NiO films are characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM), respectively. The XRD result revealed that polycrystalline NiO thin films with preferred growth directions along (111) and (200) planes are obtained. Moreover, the electrochromic property of NiO thin films was investigated with a UV-Visible spectrophotometer. The colored state of the electrochromic cell was obtained by the ion insertion at the 1-V external applied bias in 0.1 M KOH. The reversibility between the colored and bleached states is confirmed by the optical transmittance. The result shows the optical contrast as high as 28.68.

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“…To investigate the replacement of oxygen with Fions at the oxygen sites, XPS analysis was performed ( Figure 3 and Figure S1). In the O1s spectra, the characteristic peaks at 528-530 and 531-533 eV correspond to bonds between the transition metal (M) and oxygen and oxygen vacancies, respectively (Figure 3a (Table S2) [32][33][34][35]. Furthermore, the Ni2p spectrum of NCMF consisted of characteristic peaks at 854-856 and 858-859 eV, which corresponded to Ni−O and M−F bonds, respectively ( Figure 3b).…”

Section: Resultsmentioning

confidence: 99%

Fluorine-Doped LiNi0.8Mn0.1Co0.1O2 Cathode for High-Performance Lithium-Ion Batteries

Kim

Park

et al. 2020

Energies

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For advanced lithium-ion batteries, LiNixCoyMnzO2 (x + y + z = 1) (NCM) cathode materials containing a high nickel content have been attractive because of their high capacity. However, to solve severe problems such as cation mixing, oxygen evolution, and transition metal dissolution in LiNi0.8Co0.1Mn0.1O2 cathodes, in this study, F-doped LiNi0.8Co0.1Mn0.1O2 (NCMF) was synthesized by solid-state reaction of a NCM and ammonium fluoride, followed by heating process. From X-ray diffraction analysis and X-ray photoelectron spectroscopy, the oxygen in NCM can be replaced by F− ions to produce the F-doped NCM structure. The substitution of oxygen with F− ions may produce relatively strong bonds between the transition metal and F and increase the c lattice parameter of the structure. The NCMF cathode exhibits better electrochemical performance and stability in half- and full-cell tests compared to the NCM cathode.

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In situ electrochromic efficiency of a nickel oxide thin film: origin of electrochemical process and electrochromic degradation

Abstract: Schematically deciphering the electrochemical mechanism of the electrochromic NiOx thin film based on the Li+-ion electrolytes.

Cited by 90 publications

References 48 publications

Optimized properties of innovative ElectroChromic Device using ITO / Ag / ITO electrodes

Optimized properties of innovative ElectroChromic Device using ITO / Ag / ITO electrodes

Effect of Sputtering Power on Optical Properties of Nickel Oxide Electrochromic Thin Films

Fluorine-Doped LiNi0.8Mn0.1Co0.1O2 Cathode for High-Performance Lithium-Ion Batteries

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