CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Luting Kou,Xi Chen,Huimin Liu,Shuoshuo Cheng,Mengting Wu,Min Li,Ying Bai,Yibo Wang,Qian Dong,Jiahui Qian,Shiyu Li,Wei Lu
Sodium-ion batteries (SIBs) are promising for large-scale energy storage, with cathode materials being key to their electrochemical performance. Recently, Na 3 Fe 2 (PO 4 )P 2 O 7 has drawn attention as a potential cathode material for SIBs due to its low cost and stable crystal structure. In this study, we prepared a porous Na 3 Fe 2 (PO 4 )P 2 O 7 (NFPP) and introduced nano-BaTiO 3 (BT) to create a composite cathode. The synthesized Na 3 Fe 2 (PO 4 )P 2 O 7 –3 %BaTiO 3 (NFPP-3BT) delivered a reversible capacity of 62.7 mAh g −1 at an ultra-high rate of 120C and exhibited a long cycle life of 2000 cycles at 10C with a capacity retention of 80.5 %. The high-rate performance is attributed to the synergic effect of the porous structure of NFPP and the polarization electric field from BT's ferroelectricity, enhancing the Na + diffusion. Moreover, the strong adsorption energy for sodium salt anions on the BT surface accelerates the desolvation process and improves the stability of cathode electrolyte interphase (CEI), further improving the rate and cycling performance of NFPP. This work unveils a new strategy for achieving both high-rate capability and excellent cycle stability in SIBs through the synergistic effect of mixed polyanionic cathode materials and ferroelectric materials.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Baolai Wang,Kaili Wei,Fuming Chen,Yinzhen Wang,Guannan He,Wei Li,Junming Liu,Qinyu He
It has been found it more difficult in completely degrading A-ring of tetracycline (TC) than completely degrading B-D rings of tetracycline. Thus, it is very necessary to find an effective route to completely degrading A-ring of tetracycline. In this work, a Z-scheme heterojuncted core-shell La(OH) 3 @BaTiO 3 composite (LB) was designed and fabricated through hydrothermal method . Many characterization techniques were employed to investigate the microstructure, phases, composition, energy band structure , and the lifetime of photogenerated carriers. In the mean time, the photocatalytic properties, including the degradation of A-ring and B-D rings of TC, as well as active species during photo-degradation were investigated. It is found that the as-prepared LB has an improved lifetime of photo-produced carriers, as well as high photocatalytic properties, being attributed to the core-shell structured heterojunction La(OH) 3 @BaTiO 3 . In addition, it is also found that ·O 2 − is more effective on degrading A-ring of TC than other active species, likely owed to the PKa3 value (3.3) of A-ring in TC. This work has supplied a route to completely degrading the A-ring of TC: rationally design and prepare a Z-scheme heterojuncted composites which supply very negative conduction band bottom potential.
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高影响因子
InfoMat
·
2024
·Vol. 6
·期 4
·e12531
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IF 22.7
Huiyu Dan,Hongyu Li,Lan Xu,Chong Guo,Chris R. Bowen,Ya Yang
Optoelectronic logic gates have emerged as one of the key candidates for the creation of next generation logic devices. However, current optoelectronic logic gates can provide only one or two logic gates, severely limiting their applications. Here we report a self-powered and mechanically flexible device based on a BaTiO 3 ferroelectric film to produce multi-modal logic gates. By exploiting the photo-induced photovoltaic and pyroelectric effects of a Schottky junction which is created between BaTiO 3 and LaNiO 3 , the device is able to provide five different optoelectronic logic gates, which can be operated using input lasers of different wavelength (405 or 785 nm). The mode of operation of the logic gate can be switched by controlling the wavelength and intensity of the input laser, where the switching process is both lossless and reversible. A logic gate array was designed to conduct the five logic operations, with 100% accuracy, thereby providing application potential for the Internet of Things, big data, and secure solutions for data processing and transmission.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2013
·Vol. 15
·期 40
·17560-17569
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IF 3.829
Liyuan Xie,Xingyi Huang,Bao-Wen Li,Chunyi Zhi,Toshikatsu Tanaka,Pingkai Jiang
Dielectric polymer nanocomposites with high dielectric constant have wide applications in high energy density electronic devices. The introduction of high dielectric constant ceramic nanoparticles into a polymer represents an important route to fabricate nanocomposites with high dielectric constant. However, the nanocomposites prepared by this method generally suffer from relatively low breakdown strength and high dielectric loss, which limit the further increase of energy density and energy efficiency of the nanocomposites. In this contribution, by using core–satellite structured ultra-small silver (Ag) decorated barium titanate (BT) nanoassemblies, we successfully fabricated high dielectric constant polymer nanocomposites with enhanced breakdown strength and lower dielectric loss in comparison with conventional polymer–ceramic particulate nanocomposites. The discharged energy density and energy efficiency are derived from the dielectric displacement–electric field loops of the polymer nanocomposites. It is found that, by using the core–satellite structured Ag@BT nanoassemblies as fillers, the polymer nanocomposites can not only have higher discharged energy density but also have high energy efficiency. The mechanism behind the improved electrical properties was attributed to the Coulomb blockade effect and the quantum confinement effect of the introduced ultra-small Ag nanoparticles. This study could serve as an inspiration to enhance the energy storage densities of dielectric polymer nanocomposites.
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高影响因子
Small
·
2026
·
IF 11.8
Tianyu Jia,Mengnan Ruan,Chengyi Wang,Li Zhou,Zhifeng Liu
Efficient piezo-photoelectrochemical (Piezo-PEC) water splitting is critical for sustainable hydrogen production, yet its performance is largely constrained by sluggish charge separation and inefficient mechanical-to-electrical energy conversion. Here, we introduce a defect polarization-metal anchoring strategy by selectively anchoring Ni at Ba-vacancy-rich regions of BaTiO 3 to achieve efficient Piezo-PEC water splitting. Experimental characterizations and density functional theory (DFT) calculations reveal that Ba vacancies reconstruct the local coordination environment of Ti sites, promoting Ti 3+ formation and TiO 6 octahedral distortion to enhance lattice polarization and the piezoelectric built-in electric field. Ni anchoring further enhances Ti 3d-Ni 3d-O 2p orbital hybridization and Ti─O covalency, forming Ni 2+ /Ti 3+ dual active sites. The enhanced covalency establishes delocalized electron transport pathways to suppress bulk carrier recombination, while the dual active sites accelerate the proton-coupled electron transfer (PCET) via Ti─O─Ni bridges. The reinforced piezoelectric field synergistically couples with the photogenerated field to promote efficient charge separation. Benefiting from these cooperative effects, the Ni/BTO-Ba V photoanode delivers a photocurrent density of 2.21 mA cm −2 at 1.23 V RHE under ultrasonic-light coupling, with a piezoelectric coefficient (d 33 ) of 65.13 pm V −1 . This work establishes a universal guideline for synergistic modulation of defect polarization and metal sites, guiding the rational design of high-performance photoelectrodes.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yulin Tan,Yanghao Wu,Yanfang He,Ying Yang,Huimin Zhang,Yufang Xie,Chenglin Zhang,Yuan Liu,Mingming Chen,Dawei Cao
Simultaneously strengthening interfacial electronic interaction and charge-separation driving force remains a central challenge in photocatalytic heterojunction design. Herein, a chemically matched control platform is established by coupling CdS with ferroelectric tetragonal BaTiO 3 (T-BTO) and non-ferroelectric cubic BaTiO 3 (C-BTO), enabling direct identification of the ferroelectric contribution. Ferroelectric polarization in T-BTO promotes preferential Cd 2+ anchoring, more uniform CdS growth, and tighter interfacial contact, ultimately achieving stronger electronic coupling than in C-BTO/CdS. More importantly, the ferroelectric polarization field cooperates with the built-in electric field of the type-II heterojunction, thereby providing an enhanced driving force for charge separation and transfer. Consequently, T-BTO/CdS delivers a hydrogen evolution rate of 13.28 mmol g −1 h −1 under Xe lamp irradiation, outperforming pure CdS (0.95 mmol g −1 h −1 ) and C-BTO/CdS (5.23 mmol g −1 h −1 ) by factors of 13.9 and 2.5, respectively. This work identifies ferroelectric polarization engineering as an effective strategy for concurrently optimizing interface coupling and charge separation driving force in photocatalytic heterojunctions.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 25
·11839-11851
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IF 4.682
Wang Hongye,Huang Rui,Hao Hua,Yao Zhonghua,Liu Hanxing,Cao Minghe
Dielectric capacitors are extensively applied in the electronics industry and energy storage fields due to their fast charging and discharging and better safety and stability. However, the inferior dielectric stability and low energy storage density observably limited the applications in electronics industry. A reasonable microstructural design of hierarchically structured ceramics by synergistic multiscale-domain is applied to the preparation of dielectric ceramics capacitors to improve the dielectric and energy storage properties. The dielectric and energy storage performance of materials could be adjusted and controlled by coordinating the single domain and multi domain structures of nanograins and macro grains. BaTiO 3 -based dielectric ceramics are prepared by fabricating around macrocrystalline BaTiO 3 with nanocrystalline BaTiO 3 . The synergistic effect for the various grain sizes of BaTiO 3 can significantly enhance the breakdown strength and polarization and achieve excellent dielectric properties. The results show that predominant dielectric temperature stability in compliance with the X9R standard is obtained. Synchronously, a large discharge energy storage density of 2.18 J cm −3 and an excellent energy storage efficiency of 77% together with prominent storage cycle stability (under 10 5 times) and extraordinary temperature stability (30–200 °C) is achieved in this hierarchical structure design for BaTiO 3 @FeO ceramics. The microstructure design by fabricated hierarchically structured materials provides a feasible illustration for developing dielectric capacitors with high-performance dielectric and energy storage capabilities. Graphical abstract
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高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Rui Wang,Congzhen Xie,Shoukang Luo,Huasong Xu,Bin Gou,Jiangang Zhou,Hao Yang
Polymer-based dielectric materials with high energy storage performance have become an important part of electric power and electronic systems. But due to the low intrinsic dielectric constant of polymers, it is usually needed to mingle high dielectric constant nanofillers to improve their dielectric properties. However, the addition of nanoparticles often results in higher dielectric loss and lower breakdown strength. Herein, using a simple method of surface modification of BaTiO3, silica and polydopamine are coated on the surface of BaTiO3, significantly improving the dielectric properties of the polymer. Meanwhile, the composite with a sandwich structure is prepared by using BaTiO3@SiO2@PDA/PVDF as the central layer and pure PVDF as the two outer layers, achieving an ultrahigh breakdown strength (633 MV/m). The sandwich-structured composite with 1 wt % BaTiO3@SiO2@PDA has the highest discharge energy density (15.4 J/cm3). The simulation results reveal that the sandwich structure not only acts as an interface carrier barrier but also optimizes the electric field concentration inside the composite, which reduces the probability of electric breakdown. This work can broaden the way for dielectric films to be used in the field of high energy density, and the modification strategy can also provide ideas for other fields.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 21
·50486
·
IF 3.125
Junhao Xie,Xuanchen Zhao,Shulin Sun,Shixin Song
Dielectric nanocomposites have attracted much attention due to their wide applications in electronics and electrical industry. Recently, incorporating core-shell nanoparticles into polymer matrix to improve the dielectric properties of nanocomposites has been widely reported. Tailoring the interfacial region between the polymer and the nanoparticles plays a crucial role in achieving the desired dielectric and energy storage properties of nanocomposites. However, the effect of shell structure in the interface region on the dielectric and energy storage properties is rarely studied. Based on this, core-shell BaTiO 3 nanoparticles with two different shell polymers, a “hard-soft” copolymer of methyl methacrylate and butyl acrylate (P[MMA-BA]) and a “hard” homopolymer of methyl methacrylate (PMMA), were prepared in this paper. The effect of core-shell BaTiO 3 nanoparticles with different shell structures on the dielectric and energy storage properties of poly(vinylidene fluoride) (PVDF) was investigated in depth. Due to the formation of a tight interfacial region between P(MMA-BA)@BT and PVDF matrix, P(MMA-BA)@BT/PVDF nanocomposites not only have low dielectric loss but also higher energy efficiency than PMMA@BT/PVDF nanocomposites. This study suggests a potential strategy that fabricating a “hard-soft” copolymer shell on BaTiO 3 surface can obtain desirable energy storage efficiency than the single “hard” shell structure in dielectric nanocomposites.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2019
·
IF 6.282
Zhong Yang,Jing Wang,Yiliang Hu,Chaoyong Deng,Kongjun Zhu,Jinhao Qiu
Flexible dielectric capacitors with large energy storage density play key role in modern electronic devices. Ceramic fibers with large dielectric constants are benign candidates to be introduced into the polymer matrix to enhance the energy storage density while guaranteeing the flexibility. In present work, Nd doped BaTiO 3 (NBT) fibers with and without dopamine (PDA) coating were successfully fabricated and introduced into the Poly(vinylidene fluoride) (PVDF) matrix. The dielectric constants and breakdown strength were simultaneously enhanced with a small loading of NBT filler. The subtle modulation was then performed around the filler loading at which the large energy density was obtained. With the NBT loading of 2.5 wt% and 4.2 wt%, the maximum energy density of 9.3 and 10.4 J/cm 3 were obtained in PVDF/NBT and PVDF/NBT@PDA composites, respectively. Both of experimental results and simulation indicate the effectiveness of dopamine coating on the uniform distribution of electric field and good comparability between the matrix and fillers.
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高影响因子
IET Nanodielectrics
·
2019
·Vol. 2
·期 3
·103-108
·
IF 0
Jun-Wei Zha,Shi-Cong Yao,Yan Qiu,Ming-Sheng Zheng,Zhi-Min Dang
Polymer-based composites with ceramic fillers could combine the advantages of both, which can be potentially used in electrical and electronic technology. In this work, the barium titanate (BaTiO 3 ) nanofibres and the core–shell structured BaTiO 3 @Al 2 O 3 nanofibres with Al 2 O 3 insulation layer coated on the BaTiO 3 surface were both prepared via the electrospinning method. The appropriate incorporation of the ceramic nanofibres effectively improves the dielectric properties and energy density of the polymer. Moreover, the poly(vinylidene fluoride- co -hexafluoropropylene)-based composite films with the three-layer sandwich structure were fabricated to further promote the dielectric properties. The results show that the outer two layers with a higher content of BaTiO 3 nanofibres can make more contribution to the improved permittivity of the composites. In addition, the introduction of the interlayer with low loading of BaTiO 3 @Al 2 O 3 nanofibres promotes the breakdown strength. This work gives rise to the potential in high energy storage applications.
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CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Chenjie Fu,Nan Chen,Guoping Du
Effects of Ni 2+ doping at A and B sites of BaTiO 3 ceramics on the crystal structures, microstructures, chemical bonding characteristics and dielectric and ferroelectric properties were studied. Both the A-site doped Ba 1−x Ni x TiO 3 and B-site doped BaTi 1−x Ni x O 3 ceramics ( x = 0, 0.01, 0.03, 0.05, 0.08 and 0.10) were prepared using the solid state reaction method at 1300 °C. For Ni 2+ doping at A sites, no change in the crystal structure of Ba 1−x Ni x TiO 3 was observed. The Ba 1−x Ni x TiO 3 ceramics remained to be of tetragonal structure, but their tetragonality consistently decreased with x . For Ni 2+ doping at B sites, a change in the crystal structure from tetragonal to hexagonal was observed for the BaTi 1−x Ni x O 3 ceramics. The hexagonal structure started to appear when x = 0.03, and BaTi 1−x Ni x O 3 ceramics completely transformed from tetragonal to hexagonal structure when x =0.08. Ni 2+ doping introduced more oxygen vacancies to Ba 1−x Ni x TiO 3 and BaTi 1−x Ni x O 3 , and the latter had higher concentration of oxygen vacancies. It was found that Ni 2+ doping, either at A or B sites, strongly decreased their dielectric and ferroelectric properties. The Ba 1−x Ni x TiO 3 ceramics remained to be ferroelectric for x up to 0.10, although it was weak, while the BaTi 1−x Ni x O 3 ceramics became paraelectric when x = 0.03. The Ba 1−x Ni x TiO 3 ceramics exhibited higher dielectric constant than the BaTi 1−x Ni x O 3 .
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危险品化学品经营许可证（带存储）