Sub-kilogram-scale synthesis of highly dispersible zirconia nanoparticles for hybrid optical resins

He, Xianglei; Wang, Zhi; Wang, Dan; Yang, Feng; Tang, Ruijie; Wang, Jie‐Xin; Pu, Yuan; Chen, Jianfeng

doi:10.1016/j.apsusc.2019.06.187

Cited by 15 publications

(7 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A typical graphitic carbon peak appeared for the NG sample at a value of 2θ of 26.5°, related to the (002) plane of the layered graphite material (PDF#12-0210) . The peaks at 30.1 and 34.9° are characteristic of ZrO 2 (PDF#49-1642), which arose from the crushed particles of the zirconium ball used for the Emax grinding process . The other characteristic peaks appearing at 28.4, 47.3, 56.1, and 69.1° in the patterns of the Si, bare-Si/G, SD1-Si/G, and SD2-Si/G samples could be indexed to the typical diffraction peaks of the (111), (220), (311), and (400) lattice planes of crystalline Si (PDF#75-0590) .…”

Section: Resultsmentioning

confidence: 99%

“…Through EA, we estimated the total amounts of carbon materials present in the bare-Si/G, SD1-Si/G, and SD2-Si/G composite samples to be 63.43, 68.12, and 67.81 wt %, respectively. Furthermore, we expected the formation of a small amount of amorphous carbon to act as a buffer layer upon the expansion of the silicon particles, potentially helping isolate the silicon and the electrolyte from direct contact while also improving the stability of the interface …”

Section: Resultsmentioning

confidence: 99%

“…20 The peaks at 30.1 and 34.9°are characteristic of ZrO 2 (PDF#49-1642), which arose from the crushed particles of the zirconium ball used for the Emax grinding process. 21 The other characteristic peaks appearing at 28.4, 47.3, 56.1, and 69.1°in the patterns of the Si, bare-Si/G, SD1-Si/G, and SD2-Si/G samples could be indexed to the typical diffraction peaks of the (111), ( 220), (311), and (400) lattice planes of crystalline Si (PDF#75-0590). 22 Significant signals for these planes appeared in the XRD patterns of the composites (curves c−e), indicating that the spray-drying process did not affect the crystal structure of the Si component in the Si/G composite materials.…”

Section: Materials Characterizationmentioning

confidence: 95%

See 2 more Smart Citations

Suppressed Volume Change of a Spray-Dried 3D Spherical-like Si/Graphite Composite Anode for High-Rate and Long-Term Lithium-Ion Batteries

Shih

Chen

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Morphology plays a vital role in controlling the volume variation in Si-based anode materials and enhances lithiumion battery performances. Here, we demonstrated advanced techniques that combine electrostatic self-assembly and spraydrying methods to form 3D spherical-like silicon/graphite (denoted "Si/G") composite anode materials. This spherical morphology alleviates issues relating to silicon volume changes that occur in high-rate lithium-ion batteries. Commercial graphite (G) flakes were initially mixed with silicon nanoparticles (ca. 50 nm) to form a bare-Si/G composite through electrostatic interaction; sphericallike composite particles were then obtained through single and double spray-drying processes, giving samples SD1-Si/G and SD2-Si/G, respectively. We examined the charge/discharge characteristics of the fabricated electrodes (CR2032-type coin cells) in the voltage range 0.02−1.5 V (vs Li/Li + ). The as-fabricated bare-Si/G, SD1-Si/G, and SD2-Si/G half-cells provided initial discharge specific capacities of 897, 866, and 1020 mA h g −1 , respectively. The SD2-Si/G half-cell shows better cycling stability at a high current rate of 400 mA g −1 than the SD1-Si/G and bare-Si/G half-cells due to effective inhibition of the volume change in the more stable spherical structure of the SD2-Si/G composite, as evidenced through in situ dilatometry. Thus, the spherical Si/G composite material produced through this simple spray-drying process had structural characteristics that could effectively resist silicon's high expansion rate, lower the production rate of broken silicon particles, and improve the electrochemical performance of the anode.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Materials Characterizationmentioning

confidence: 95%

See 1 more Smart Citation

Suppressed Volume Change of a Spray-Dried 3D Spherical-like Si/Graphite Composite Anode for High-Rate and Long-Term Lithium-Ion Batteries

Shih

Chen

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Since the semiconductor chip and the encapsulated material have different refractive index (RI) values. 7,8 Total reflection of light usually occurs at the interface of the chip and the encapsulation material, which limited the light extraction efficiency of the device. 9 Therefore, the value of the RI is reputed as one of the most important indexes while evaluating the encapsulation material or other optical materials.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Solid-state lighting (SSL) is a fast-growing lighting technology that uses semiconductor chips and luminescent materials to directly convert electrical energy into light energy. , Light-emitting diodes (LEDs), as the most common kind of SSL, have been one of the most popular light sources due to the low power consumption and long lifetime. , To take full advantage of quantum efficiency, the improvement of the light extraction efficiency has attracted considerable attention. , A typical LED device is made of a semiconductor chip and an encapsulated layer consisting of organic polymers and inorganic phosphors. Since the semiconductor chip and the encapsulated material have different refractive index (RI) values. , Total reflection of light usually occurs at the interface of the chip and the encapsulation material, which limited the light extraction efficiency of the device . Therefore, the value of the RI is reputed as one of the most important indexes while evaluating the encapsulation material or other optical materials.…”

Section: Introductionmentioning

confidence: 99%

Surface Engineering of Titanium Dioxide Nanoparticles for Silicone-Based Transparent Hybrid Films with Ultrahigh Refractive Indexes

Wang

et al. 2021

Langmuir

Self Cite

View full text Add to dashboard Cite

We report a newly developed surface engineering approach for TiO 2 nanoparticles toward transparent TiO 2 /silicone nanocomposites with high refractive index (RI) values. Zirconate coupling agents are adopted on the TiO 2 nanoparticles for surface passivation and to enhance the dispersibility of the nanoparticles in organic substrates. The modified TiO 2 nanoparticles can be uniformly dispersed in silicone, forming transparent hybrid films with an ultrahigh RI of 2.01. The preparation technique of colloidal TiO 2 and polymer-based nanocomposites is simple and suitable for scalable production, which is promising for expanding the application of TiO 2 materials in photonic devices.

show abstract

A Highly Controlled Organic–Inorganic Encapsulation Nanocomposite with Versatile Features toward Wearable Device Applications

Tang

Yao

Chen

et al. 2021

Macromol. Rapid Commun.

Self Cite

View full text Add to dashboard Cite

Ultraviolet-curable polyurethane acrylate (PUA) materials can be used in a number of important applications spanning from microfluidics, surface patterning to wearable technology. For the first time, the potential of encapsulation of modified zirconia (ZrO 2 ) nanoparticles is reported in PUA-based hybrid films aimed to facilitate profoundly enhanced hardness and refractive index. By successfully manipulating the interfacial reaction conditions between ZrO 2 nanoparticles and PUA film, the PUA-based nanocomposites exhibit an ultrahigh hardness of 9 and superior refractive index of 1.64 (589.3 nm). The outcomes obtained pave the way for seamless application of nanozirconia/PUA as a potent encapsulating material that provides structurally morphable, water resistant, and optically transparent light emitting diodes toward wearables devices in healthcare. IntroductionRecently wearable technology in healthcare has emerged as a rising technique to monitor the health of users, owing to its less invasiveness, portability, and unlimited spatiotemporal tunability. [1,2] Among the most generally utilized noninvasive

show abstract

Sub-kilogram-scale synthesis of highly dispersible zirconia nanoparticles for hybrid optical resins

Cited by 15 publications

References 61 publications

Suppressed Volume Change of a Spray-Dried 3D Spherical-like Si/Graphite Composite Anode for High-Rate and Long-Term Lithium-Ion Batteries

Suppressed Volume Change of a Spray-Dried 3D Spherical-like Si/Graphite Composite Anode for High-Rate and Long-Term Lithium-Ion Batteries

Surface Engineering of Titanium Dioxide Nanoparticles for Silicone-Based Transparent Hybrid Films with Ultrahigh Refractive Indexes

A Highly Controlled Organic–Inorganic Encapsulation Nanocomposite with Versatile Features toward Wearable Device Applications

Contact Info

Product

Resources

About