Cavitating inside spherical boron nitride nanoparticles dependent on controllably follow-up treated atmospheres

Liu, Chaoze; Fu, Kun; Wang, Zhixuan; Cao, Chaochao; Yang, Jingwen; Zhai, Qinghong; Wang, Bozheng; Zhou, Zheng; Ji, Jiawei; Li, Mengyuan; Liu, Zhenya; Tang, Chengchun

doi:10.1007/s11051-020-05026-y

Cited by 9 publications

(11 citation statements)

References 42 publications

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“…For comparison, other classes of BN fillers including c-hBN powders and boron nitride nanospheres (BNSPs, prepared by a previous method 11 ) were filled into the PDMS matrix using the same process mentioned above to form c-hBN/PDMS and BNSPs/PDMS composite foams. Here, we named the c-hBN/PDMS, BNSPs/PDMS, and BNNSs/PDMS as CBSF, BSSF, and BSF in the following text.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Highly Multifunctional Performances of Boron Nitride Nanosheets/Polydimethylsiloxane Composite Foams

Qiao

Gao

et al. 2023

ACS Appl. Mater. Interfaces

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Although this kind of hexagonal boron nitride (h-BN)-filled polydimethylsiloxane (PDMS) multifunctional composite foam has been greatly expected, its development is still relatively slow as a result of the limitation of synthetic challenge. In this work, a new foaming process of BNNSs-PDMS, alcohol, and water three-phase emulsion system is employed to synthesize a series of high-quality BNNSs/PDMS composite foams (BSFs) filled with highly functional and uniformly distributed BNNSs. As a result of well-bonded interfaces between the BNNSs and PDMS, enhanced multiple functions of BSFs appeared. The BSFs can show complete resilience at a compressive strain of 90% and only 3.99% irreversible deformation after 100,000 compressing–releasing hyperelastic cycles at a strain of 60%. On the basis of their outstanding shape-memory properties, the maximum voltage value of compression-driven piezo-triboelectric (CDPT) responses of the BSFs is up to ∼20 V. Depending on the remarkable super-elastic and CDPT performances, the BSFs can be used for sensitive sensing of temperature difference and electromechanical responses. Also, in the range of 12–40 GHz, the BSF materials display ultralow dielectric constants between 1.1 and 1.4 with proper dielectric loss tangent values of <0.3 and exhibit an enhanced and broadened sound adsorption capacity ranging from 500 to 6500 Hz. Although BSFs have high porosities of >65%, their thermal conductivities can still reach up to 0.407 ± 0.039 W m–1 K–1. Moreover, the BSF materials display favorable thermal stability, obviously reduced coefficient of thermal expansion, and good flame retardancy. All of these properties render the BSFs as a new category of excellent multifunctional material.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Highly Multifunctional Performances of Boron Nitride Nanosheets/Polydimethylsiloxane Composite Foams

Qiao

Gao

et al. 2023

ACS Appl. Mater. Interfaces

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“…The precursor of a solid BN nanosphere was prepared using the improved CVD method reported previously. , Homogeneous nanosphere precursors were prepared by double horizontal tube furnaces using trimethyl borate (C 3 H 9 BO 3 , Sigma-Aldrich) as the B and NH 3 as the N sources. The first and second heating temperature zones were maintained at 1000 and 500 °C, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…52 A large number of −NH 2 (∼3240 cm −1 ) and −OH (∼3480 cm −1 ) were also observed after ammonia fixation treatment. 47 Furthermore, absorption vibration peaks at ∼938, ∼1038, and ∼1104 cm −1 were related to B−O−H, B−O, and B−OH, 53 suggesting the successful modification of BNSPH with various functional groups. The modification of a large number of functional groups contributes to the enhancement of the interactions between BNSPH with PEO and LiTFSI, facilitating polymer chain mobility and anion (TFSI − ) immobilization while ensuring excellent dispersion.…”

Section: Fabrication Of Boron Nitride Nanosphere (Bnsph)mentioning

confidence: 99%

“…The accelerated development of different BN nanostructures has promoted their further practical applications. BN nanospheres have a unique isotropic structure filled with stacking stress and defects. , Furthermore, spherical BN is characterized by a high specific surface area and an abundance of B–O bonds and is widely used in adsorption, catalysis, biomedical, and other fields. , Therefore, incorporating spherical BN into SPE may significantly enhance the overall performance of the composite electrolytes.…”

Section: Introductionmentioning

confidence: 99%

“…In this work, the uniform boron nitride nanosphere (BNSPH) with reactive surface defects was prepared using borate and ammonia as raw materials through an improved chemical vapor deposition (CVD) method with high-temperature ammonia immobilization treatment, as previously reported by our group, , and was introduced to the PEO-based SPE. On the one hand, the uniformly dispersed BNSPH decreases the crystallinity of the PEO and improves the ionic conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Uniform Boron Nitride Nanospheres with Reactive Surface Defects for Composite Solid-State Electrolytes

Ji,

Liu,

Zhou

et al. 2024

ACS Appl. Nano Mater.

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Low ionic conductivity, oxidation potential, and poor lithium stability limit the applications of solid polymer electrolyte (SPE) in advanced energy storage systems. Combining functional inorganic materials and flexible polymers is crucial for achieving high ionic conductivity and exceptional rate performance in all-solid-state batteries (ASSBs). Herein, uniform boron nitride nanosphere (BNSPH) with reactive surface defects was prepared through an improved chemical vapor deposition method with hightemperature ammonia immobilization treatment and was introduced to the poly(ethylene oxide) (PEO)-based SPE. Homogeneously dispersed nanostructures reduce the polymer's crystallinity, facilitating the movement of polymer chain segments and significantly improving the composite electrolyte's ionic conductivity. The interaction between BNSPH and the PEO chain enhances the structural stability of the composite polymer electrolyte (CPE) under high voltage, and the oxygen vacancies on the BNSPH surface immobilize TFSI − , promoting the transfer of more dissociated Li + through the PEO chain. In addition, the excellent thermal conductivity enhances the interface stability and effectively avoids the growth of lithium dendrites. The CPE-5% exhibits an ionic conductivity of 3.86 × 10 −4 S cm −1 and high voltage stability at 60 °C. Therefore, the assembled Li|CPE-5%|Li cell exhibited stable plating/stripping for 2000 h with a small polarization voltage. Furthermore, Li/LFP batteries incorporating CPE-5% exhibit remarkable rate performance (87.8 mA h g −1 at 2.0 C) and outstanding cycle stability (157.4 mA h g −1 after 150 cycles at 0.5 C and 60 °C). Furthermore, the NCM622/Li assembled with CPE-5% could achieve an excellent lifespan. This study confirms the feasibility of this application and inspire the application of defect-rich BNSPH in SPEs.

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Controllable preparation of boron nitride microspheres and their epoxy-based thermoconductive composites

Liu

Zhou

et al. 2023

Ceramics International

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Cavitating inside spherical boron nitride nanoparticles dependent on controllably follow-up treated atmospheres

Cited by 9 publications

References 42 publications

Highly Multifunctional Performances of Boron Nitride Nanosheets/Polydimethylsiloxane Composite Foams

Highly Multifunctional Performances of Boron Nitride Nanosheets/Polydimethylsiloxane Composite Foams

Uniform Boron Nitride Nanospheres with Reactive Surface Defects for Composite Solid-State Electrolytes

Controllable preparation of boron nitride microspheres and their epoxy-based thermoconductive composites

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