Process, fundamental and application of one-step molten-salt synthezed BaTi2O5 nanorods

Zou, Wenzhong; Zhou, Guoyun; He, Wei; Wang, Shouxu; Yan, Hong; Chen, Yuanming; Wang, Chong; Ma, Chaoying; Guo, Shenghui; Miao, Hongchen; Zhou, Jinqun

doi:10.1016/j.jallcom.2020.154064

Cited by 5 publications

(3 citation statements)

References 43 publications

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“…The XRD result of the obtained BT sample shown in Figure a implies the coexistence of monoclinic BT and cubic BaTiO 3 . Quantitative phase analysis based on Rietveld refinement suggests that the mass ratio is 76.5% for BT and 23.5% for BaTiO 3 while the latter possibly arises from the decomposition of BT during sintering . Since both BT and BaTiO 3 are excellent ferroelectrics, , which could induce spontaneous polarization, the mixture is thus used as an additive into the PE without further purification in current research.…”

Section: Resultsmentioning

confidence: 99%

“…Quantitative phase analysis based on Rietveld refinement suggests that the mass ratio is 76.5% for BT and 23.5% for BaTiO 3 while the latter possibly arises from the decomposition of BT during sintering. 24 Since both BT and BaTiO 3 are excellent ferroelectrics, 18,19 which could induce spontaneous polarization, the mixture is thus used as an additive into the PE without further purification in current research. EPR was employed to observe the active sites through the characteristic unpaired electron signal at g = 2.003 (Figure 1b), which was usually used as an indicator for oxygen vacancy as O 2 − .…”

Section: Characterization Of the Synthesized Bt Nanorodsmentioning

confidence: 99%

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Ferroelectric Nanorods as a Polymer Interface Additive for High-Performance Garnet-Based Solid-State Batteries

Wang

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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Sandwiching polymer interlayers between the electrode and solid electrolyte is considered promising in solving the interfacial issues arising from solid–solid contact in garnet-based solid-state batteries, but drawbacks including low ionic conductivity, inferior Li+ transference number, and unsatisfying mechanical property of the polymer hindered the practical application of such strategy. To solve the mentioned shortcomings of the polymer interlayer simultaneously, we introduce the ferroelectric material, BaTi2O5 (BT) nanorods, into the polymer matrix in this work. By taking full advantage of the plasticization effect and intrinsic spontaneous polarization of the introduced ferroelectric, the polymer’s ionic conductivity and Li+ transference number have been significantly enhanced. The built-in electric field BT introduced also benefits the modulation of CEI components formed on the cathode particles, further enhancing the battery performance by decreasing cathode degradation. Besides, the BT nanorods’ particular high aspect ratio also helps increase the mechanical property of the obtained polymer film, making it more resistant to lithium dendrite growth across the interface. Benefitting from the merits mentioned above, the assembled lithium symmetric cells using garnet SE with the BT-modified polymer interlayer exhibit stable cycling performance (no short circuit after 1000 h under RT) with low polarization voltage. The full battery employing LiFePO4 as a cathode also presents superior capacity retentions (94.6% after 200 cycles at 0.1 C and 93.4% after 400 cycles at 0.2 C). This work highlights the importance of ferroelectric materials with specific morphology in enhancing the electrochemical performance of polymer-based electrolytes, promoting the practical application of solid-state batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of the Synthesized Bt Nanorodsmentioning

confidence: 99%

Ferroelectric Nanorods as a Polymer Interface Additive for High-Performance Garnet-Based Solid-State Batteries

Wang

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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“…Polymer composites provide low heat dissipation along with high permittivity. Metal filler-based polymer composites [ 10 , 11 ] have attained a huge concentration because of their light weight, low price, and easy processing. In the past, two types of approaches were adopted for polymeric dielectric composites [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Multi-Stressed Nano and Micro-Silica/Silicone Rubber Composites with Improved Dielectric and High-Voltage Insulation Properties

et al. 2021

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The scope of silicone rubber (SiR) is confined due to the deprivation of its dielectric propertiesupon exposure to various ambient stresses. The aim of this research is to develop silicone rubber-based composites by employing inorganic oxide fillers for improved dielectric and high voltage insulation properties for widening its scope in the field of electrical appliances. This study reports the preparation of different composites of silicone rubber with varying concentrations of micro and nano-silica fillers. The dielectric propertytrends of these as-prepared neat and impregnated samples were examined via an indigenously developed weathering chamber capable of applying multiple stresses of acid rain, heat, humidity, UVA radiation, and salt fog. Dielectric constant values were measured before and after applying stresses. Upon applying stresses, a periodic decline in dielectric constant was observed. Improved dielectric properties were obtained by adding micro and nano-silica as fillers. A nano silica-incorporated silicone rubber product exhibited good potential for dual applications as dielectric and high voltage insulation.

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Mechanism of the formation, growth and transformation of BaTi2O5 nanorods synthesized by one-step in molten-salts

Zou

Zhou

Yan

et al. 2023

Ceramics International

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Process, fundamental and application of one-step molten-salt synthezed BaTi2O5 nanorods

Cited by 5 publications

References 43 publications

Ferroelectric Nanorods as a Polymer Interface Additive for High-Performance Garnet-Based Solid-State Batteries

Ferroelectric Nanorods as a Polymer Interface Additive for High-Performance Garnet-Based Solid-State Batteries

Multi-Stressed Nano and Micro-Silica/Silicone Rubber Composites with Improved Dielectric and High-Voltage Insulation Properties

Mechanism of the formation, growth and transformation of BaTi2O5 nanorods synthesized by one-step in molten-salts

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