A dual-layer micro/nanostructured fibrous membrane with enhanced ionic conductivity for lithium-ion battery

Chen, Yifan; Gao, Yue; Jian, Jiejie; Lu, Yihan; Zhang, Bingying; Liu, Haiqing; Li, Lei; Wang, Xiangwei; Kuang, Chunxia; Zhai, Yunyun

doi:10.1016/j.electacta.2018.09.124

Cited by 21 publications

(19 citation statements)

References 39 publications

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“…As shown in Figure , the construction of this direct Z‐scheme heterojunction photocatalyst is identical to that of conventional all‐solid‐state Z‐scheme heterojunction photocatalysts, except that the rare and expensive electron mediators are not required in this system . Similarly, electrons and holes are spatially separated on the semiconductor with the higher reduction potential and oxidation potential of the direct Z‐scheme heterojunction photocatalyst, respectively . Furthermore, the fabrication cost of this direct Z‐scheme heterojunction photocatalyst is low and comparable to that of conventional type‐II heterojunction systems .…”

Section: Direct Z‐scheme Heterojunctionsmentioning

confidence: 93%

Heterojunction Photocatalysts

et al. 2017

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Semiconductor-based photocatalysis attracts wide attention because of its ability to directly utilize solar energy for production of solar fuels, such as hydrogen and hydrocarbon fuels and for degradation of various pollutants. However, the efficiency of photocatalytic reactions remains low due to the fast electron-hole recombination and low light utilization. Therefore, enormous efforts have been undertaken to solve these problems. Particularly, properly engineered heterojunction photocatalysts are shown to be able to possess higher photocatalytic activity because of spatial separation of photogenerated electron-hole pairs. Here, the basic principles of various heterojunction photocatalysts are systematically discussed. Recent efforts toward the development of heterojunction photocatalysts for various photocatalytic applications are also presented and appraised. Finally, a brief summary and perspectives on the challenges and future directions in the area of heterojunction photocatalysts are also provided.

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Section: Direct Z‐scheme Heterojunctionsmentioning

confidence: 93%

Heterojunction Photocatalysts

et al. 2017

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“…reported N‐doped NaNbO 3 samples sensitized by carbon nitrides which showed higher activities for the degradation of Rhodamine B. H. Shi's group prepared N‐doped NaNbO 3 compounds and presented degradation ability of organic contaminants under irradiation of visible light. As for composites, many NaNbO 3 related composite photocatalysts have been reported such as NaNbO 3 /WO 3 , In 2 O 3 /NaNbO 3 , NaNbO 3 /ZnO, g‐C 3 N 4 /NaNbO 3 , Bi 2 O 3 /NaNbO 3 , AgSbO 3 /NaNbO 3 , in which NaNbO 3 plays a key role in the increased photocatalytic activity of the composite photocatalysts compared with that of its counterparts. Therefore, NaNbO 3 material might be a good mother structure to bring it to par as an efficient visible light driven photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Visible-light induced Photocatalytic Activity of NaNbO₃Oriented Composite Photocatalyst Coupled with N-NaNbO₃and V-NaNbO₃

et al. 2016

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A composite photocatalyst of N‐doped NaNbO3/V‐doped NaNbO3 was fabricated through a solid state method, hydrothermal process and a facile physical grinding. The composite and its counter parts were characterized by powder X‐ray diffraction, UV‐Vis‐diffuse reflectance spectroscopy, scanning and transmission electron microscopies and photoluminescence spectroscopy. The photocatalytic properties of N‐NaNbO3/V‐NaNbO3 were evaluated by the photocatalytic degradation of methyl violet dye under visible light. The photocatalytic activity of the composite is much higher than that of pure NaNbO3, N‐NaNbO3 and V‐NaNbO3. The higher photocatalytic activity of the N‐NaNbO3/V‐NaNbO3 composite is closely related to the restraining the recombination of electron–hole pairs at the interfaces of the N‐NaNbO3 and V‐NaNbO3. The possible charge transfer across the interface was also discussed based on the results of scavenger tests. This newly constructed N‐NaNbO3/V‐NaNbO3 composite could find potential applications in environmental purification and solar energy conversion with promising visible light‐driven photocatalytic activity and good stability.

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“…DSC was carried out to evaluate the thermal behaviors of the prepared separators. From the DSC profile of the PP separator, shown in Figure 4a, an obvious endothermic peak at about 167 • C is detected, which is the melting temperature of PP [25,26]. In contrast, no obvious peaks are observed in the range of 50-300 • C for both the pristine PI separator and Z/PI-10 composite separator, and there is a negligible difference among the PI separator and Z/PI-10 composite separator, indicating that the PI-based separators possess significant thermal stability up to 300 • C. Meanwhile, to further evaluate the thermal behaviors of the separators, a TGA test was performed, and the results are shown in Figure 4b.…”

Section: Resultsmentioning

confidence: 99%

Design of A High Performance Zeolite/Polyimide Composite Separator for Lithium-Ion Batteries

Wang

Liang

et al. 2020

Polymers

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A zeolite/polyimide composite separator with a spongy-like structure was prepared by phase inversion methods based on heat-resistant polyimide (PI) polymer matrix and ZSM-5 zeolite filler, with the aim to improve the thermal stability and electrochemical properties of corresponding batteries. The separator exhibits enhanced thermal stability and no shrinkage up to 180 °C. The introduction of a certain number of ZSM-5 zeolites endows the composite separator with enhanced wettability and electrolyte uptake, better facilitating the free transport of lithium-ion. Furthermore, the composite separator shows a high ionic conductivity of 1.04 mS cm−1 at 25 °C, and a high decomposition potential of 4.7 V. Compared with the PP separator and pristine PI separator, the ZSM-5/PI composite separator based LiFePO4/Li cells have better rate capability (133 mAh g−1 at 2 C) and cycle performance (145 mAh g-1 at 0.5 C after 50 cycles). These results demonstrate that the ZSM-5/PI composite separator is promising for high-performance and high-safety lithium-ion batteries.

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A dual-layer micro/nanostructured fibrous membrane with enhanced ionic conductivity for lithium-ion battery

Cited by 21 publications

References 39 publications

Heterojunction Photocatalysts

Heterojunction Photocatalysts

Fabrication and Visible-light induced Photocatalytic Activity of NaNbO₃Oriented Composite Photocatalyst Coupled with N-NaNbO₃and V-NaNbO₃

Design of A High Performance Zeolite/Polyimide Composite Separator for Lithium-Ion Batteries

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A dual-layer micro/nanostructured fibrous membrane with enhanced ionic conductivity for lithium-ion battery

Cited by 21 publications

References 39 publications

Heterojunction Photocatalysts

Heterojunction Photocatalysts

Fabrication and Visible-light induced Photocatalytic Activity of NaNbO3Oriented Composite Photocatalyst Coupled with N-NaNbO3and V-NaNbO3

Design of A High Performance Zeolite/Polyimide Composite Separator for Lithium-Ion Batteries

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Fabrication and Visible-light induced Photocatalytic Activity of NaNbO₃Oriented Composite Photocatalyst Coupled with N-NaNbO₃and V-NaNbO₃