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Browsing by Author "Zhang, Qi"

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The effects of Ba2+ content on depolarization temperature and pyroelectric properties of lead-free 0.94Na0.5Bi0.5TiO3-0.06Ba1+xTiO3 ceramics

Balakt, Ahmed M.; Shaw, Christopher P.; Zhang, Qi (Springer, 2016-08-11)

Lead-free 0.94Na0.5Bi0.5TiO3–0.06Ba1+xTiO3 (NBT–0.06B1+xT) ceramics (0.0 ≤ x ≤ 0.03) were synthesized by a conventional solid-state reaction process. X-ray diffraction shows that the compositions are at the morphotropic ...
Efficient gas adsorption using superamphiphobic porous monoliths as the under-liquid gas-conductive circuits

Wen, Min; Peng, Cheng; Yao, Ming; Wang, Chao; Ming, Tingzhen; Peng, Biaoling; Huang, Fuzhi; Zhong, Jie; Cheng, Yi-Bing; Zhang, Qi (American Chemical Society, 2019-06-14)

The gas–liquid membrane contactor forms a gas–solid–liquid interface and has a high potential for the applications in gas adsorption, catalysis, energy exchange, and so on. Porous superhydrophobic membranes show a great ...
Electrocaloric effect in La-doped BNT-6BT relaxor ferroelectric ceramics

Li, Lucheng; Xu, Mengxing; Zhang, Qi; Chen, Ping; Wang, Ningzhang; Xiong, Dingkang; Peng, Biaolin; Liu, Laijun (Elsevier, 2017-09-22)

Relaxor [(Bi1/2Na1/2)0.94Ba0.06](1-1.5x)LaxTiO3 (x = 0, 0.03, 0.06, 0.09) ceramics (La-doped BNT-6BT) with composition close to the morphotropic phase boundary (MPB) were successfully prepared by using the conventional ...
Energy-storage properties and electrocaloric effects of Pb(1-3x/2)LaxZr0.85Ti0.15O3 antiferroelectric thick films

Zhao, Ye; Hao, Xihong; Zhang, Qi (American Chemical Society, 2014-06-30)

1-µm-Pb(1-3x/2)LaxZr0.85Ti0.15O3 (PLZT) antiferroelectric (AFE) thick films with x = 0.08, 0.10, 0.12, and 0.14 were deposited on LaNiO3/Si (100) substrates by a sol-gel method. The dielectric properties, energy-storage ...
Enhanced DC conductivity of low volume-fraction nano-particulate suspensions in silicone and perfluorinated oils.

Wilson, Stephen A.; Libor, Zsuzsanna; Skordos, Alexandros A.; Zhang, Qi (Iop Publishing Ltd, 2009-03-01)

The contrasting DC conductivities of several different types of nanoparticles (nickel, barium titanate and magnetite) suspended in both silicone and perfluorinated oils have been measured and compared. Enhanced DC ...
Enhanced energy storage performance of (1-x)(BCT-BMT)-xBFO lead-free relaxor ferroelectric ceramics in a broad temperature range

Xu, Mengxing; Peng, Biaolin; Zhu, Jinian; Liu, Laijun; Sun, Wenhong; Leighton, Glenn J. T.; Shaw, Christopher; Luo, Nengneng; Zhang, Qi (Elsevier, 2019-03-03)

Relaxor ferroelectrics with high energy storage performances are very attractive for modern applications in electronic devices and systems. Here, it is demonstrated that large energy densities (0.52e0.58 J/cm3) simultaneously ...
Enhanced energy-storage performance and electrocaloric effect in compositionally graded Pb(1−3x/2)LaxZr0.85Ti0.15O3 antiferroelectric thick films

Zhao, Ye; Hao, Xihong; Zhang, Qi (Elsevier, 2015-10-10)

The compositionally graded multilayer Pb(1−3x/2)LaxZr0.85Ti0.15O3 (PLZT) antiferroelectric (AFE) thick films were deposited on LaNiO3/Si (100) substrates by using a sol–gel method. The effect of gradient sequence on ...
Enhanced pyroelectric coefficient of antiferroelectric-ferroelectric bilayer thin films

Corkovic, Silvana; Zhang, Qi (American Institute of Physics, 2009-12-31)

In this study, the pyroelectric coefficient and the figure of merit (FOM) of the ferroelectric PbZr0.3Ti0.7O3 (PZT 30/70) thin films were found to be greatly enhanced by introducing a thin antiferroelectric PbZr0.95Ti0.05O3 ...
Enhancement of pyroelectric properties of lead-free 0.94 Na 0.5 Bi 0.5 TiO 3-0.06 BaTiO 3 ceramics by La doping

Balakt, Ahmed M.; Shaw, Christopher P.; Zhang, Qi (Elsevier, 2016-12-13)

Lead-free 0.94NBT-0.06BT-xLa ceramics at x = 0.0–1.0 (%) were synthesized by a conventional solid-state route. XRD shows that the compositions are at a morphotropic phase boundary where rhombohedral and tetragonal phases ...
Enhancing microalgae attachment for biofilm-based photobioreactors

Bhaiji, Tasneem (Cranfield University, 2016-02)

The potential of algal biofuels has been technically and experimentally confirmed with laboratory- and pilot-scale studies in past literature. However, the most important factor now is to confirm that algal cultivation ...
Environmental blue CoAl2O4 pigment co-doped by Zn2+ and Mg2+: synthesis, structure and optical properties

Peng, Xiaojin; Cheng, Jinshu; Yuan, Jian; Jin, Na; Kang, Junfeng; Hou, Yansheng; Zhang, Qi (Taylor & Francis, 2017-12-09)

Nano-sized blue solid solutions ZnxMg0.5−xCo0.5Al2O4 (x = 0–0.5) have been synthesised by the Pechini method. Single-phase ZnxMg0.5−xCo0.5Al2O4 with crystallite size of ∼40 nm was identified by XRD measurement. The TG-DSC ...
Exploration on the origin of enhanced piezoelectric properties in transition-metal ion doped KNN based lead-free ceramics

Xu, Fang; Chen, Jian; Lu, Yinmei; Zhang, Qingfeng; Zhang, Qi; Zhou, Taosheng; He, Yunbin (Elsevier, 2018-06-12)

In this work, we studied effects of Ni2O3 and Co2O3 doping on crystal structures, microstructures, orthorhombic and tetragonal phase transition temperature (To-t), and electrical properties of [Li0.06(Na0.57K0.43)0.94][T ...
Fabrication of PZT actuated cantilevers on silicon-on-insulator wafers for a RF microswitch.

Jiang, Hong Wen; Kirby, Paul B.; Zhang, Qi (International Society for Optical Engineering - SPIE, 2003)

A processing scheme for fabricating Pb(ZrxTi1-x)O3 thin film actuated silicon cantilevers using silicon-on-insulator wafers is described. Such piezoelectrically actuated cantilevers are being investigated for RF microswitches. ...
Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage

Yao, Yuechao; Xiao, Zunqin; Liu, Peng; Zhang, Shengjiao; Niu, Yuan; Wu, Hongliang; Liu, Shiyu; Tu, Wenxuan; Luo, Qi; Sial, Muhammad Aurang Zeb Gul; Zeng, Shao-Zhong; Zhang, Qi; Zou, Jizhao; Zeng, Xierong; Zhang, Wenjing (Elsevier, 2019-09-10)

Two dimensional (2D) porous carbon nanosheets (CNS) have attracted tremendous research interests in energy storage and conversion, such as supercapacitors (SCs) and lithium-sulfur batteries, because of their unique ...
Facile synthesis of high-surface-area nanoporous carbon from biomass resources and its application in supercapacitors

Yao, Yuechao; Zhang, Qi; Liu, Peng; Yu, Liang; Huang, Lin; Zeng, Shao-Zhong; Liu, Lijia; Zenga, Xierong; Zou, Jizhao (Royal Society of Chemistry, 2018-01-09)

It is critical for nanoporous carbons to have a large surface area, and low cost and be readily available for challenging energy and environmental issues. The pursuit of all three characteristics, particularly large surface ...
Facile synthesis of TiN nanocrystals/graphene hybrid to chemically suppress the shuttle effect for lithium-sulfur batteries

Tu, Jianxin; Li, Hejun; Lan, Tongbin; Zeng, Shao-Zhong; Zou, Jizhao; Zhang, Qi; Zeng, Xierong (Elsevier, 2020-01-08)

Herein, we present a microwave reduction strategy for the synthesis of reduced-graphene-oxide (rGO) supported TiN nanoparticle hybrid (TiN/rGO) under N2 atmosphere. The method involves GO reduction, metal oxide reduction ...
Facile synthesis of ultrahigh-surface-area hollow carbon nanospheres and their application in lithium-sulfur batteries

Zeng, Shao-Zhong; Yao, Yuechao; Huang, Lin; Wu, Hongliang; Peng, Biaolin; Zhang, Qi; Li, Xiaohua; Yu, Liang; Liu, Shiyu; Tu, Wenxuan; Lan, Tongbin; Zeng, Xierong; Zou, Jizhao (Wiley-VCH, 2017-12-13)

Hollow carbon nanospheres (HCNs) with specific surface areas up to 2949 m2 g−1 and pore volume up to 2.9 cm3 g−1 were successfully synthesized from polyaniline‐co‐polypyrrole hollow nanospheres by carbonization and CO2 ...
Giant electric energy density in epitaxial lead-free thin films with coexistence of ferroelectrics and antiferroelectrics

Peng, Biaolin; Zhang, Qi; Li, Xing; Sun, Tieyu; Fan, Huiqing; Ke, Shanming; Ye, Mao; Wang, Yu; Lu, Wei; Niu, Hanben; Scott, James F.; Zeng, Xierong; Huang, Haitao (Wiley, 2015-04-11)

Ferroelectrics/antiferroelectrics with high dielectric breakdown strength have the potential to store a great amount of electrical energy, attractive for many modern applications in electronic devices and systems. Here we ...
A giant electrocaloric effect in nanoscale antiferroelectric and ferroelectric phases coexisting in a relaxor Pb0.8Ba0.2ZrO3 thin film at room temperature

Peng, Biaolin; Fan, Huiqing; Zhang, Qi (John Wiley & Sons, Ltd, 2013-06-20)

Recently large electrocaloric effects (ΔT = 12 K and ΔS = 8 JK-1kg-1 at 776 kV/cm) in antiferroelectric sol-gel PbZr0.95Ti0.05O3 thin film and (ΔT = 12.6 K and ΔS = 60 JK-1kg-1 at 2090 kV/cm) in ferroelectric polymer ...
Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg1/3Nb2/3O3–0.1 PbTiO3 near room temperature.

Mischenkoa, A. S.; Zhang, Qi; Whatmore, Roger W.; Scott, J. F.; Mathurb, N. D. (American Institute of Physics, 2006-12)

We have recently observed a giant electrocaloric effect (12 K in 25 V) in 350 nm sol-gel PbZr0.95Ti0.05O3 films near the ferroelectric Curie temperature of 242oC. Here we demonstrate a giant electrocaloric effect (5 K ...

Browsing by Author "Zhang, Qi"

Browsing by Author "Zhang, Qi"

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