Electrochemically induced spinel-layered phase transition of Mn3O4 in high performance neutral aqueous rechargeable zinc battery

2018 ◽  
Vol 259 ◽  
pp. 170-178 ◽  
Author(s):  
Jianwu Hao ◽  
Jian Mou ◽  
Jingwen Zhang ◽  
Liubing Dong ◽  
Wenbao Liu ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Performance

Ti-Substituted NaNi0.5 Mn0.5- x Ti x O2 Cathodes with Reversible O3−P3 Phase Transition for High-Performance Sodium-Ion Batteries

2017 ◽  
Vol 29 (19) ◽  
pp. 1700210 ◽  
Author(s):  
Peng-Fei Wang ◽  
Hu-Rong Yao ◽  
Xin-Yu Liu ◽  
Jie-Nan Zhang ◽  
Lin Gu ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries

scholarly journals Tailoring the phase transition temperature to achieve high-performance cubic GeTe-based thermoelectrics

2020 ◽  
Vol 8 (36) ◽  
pp. 18880-18890 ◽  
Author(s):  
Ady Suwardi ◽  
Jing Cao ◽  
Lei Hu ◽  
Fengxia Wei ◽  
Jing Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
High Performance ◽  
Cubic Phase

The rhombohedral–cubic phase transition temperature of GeTe can be tailored via Sn-alloying, leading to high performance thermoelectric GeTe.

scholarly journals New High‐Performance Pb‐Based Nanocomposite Anode Enabled by Wide‐Range Pb Redox and Zintl Phase Transition

2020 ◽  
pp. 2005362
Author(s):  
Jinhyup Han ◽  
Jehee Park ◽  
Seong‐Min Bak ◽  
Seoung‐Bum Son ◽  
Jihyeon Gim ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Performance ◽  
Zintl Phase ◽  
Wide Range

Phase Transition of a Cobalt-Free Perovskite as a High-Performance Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

ChemSusChem ◽  
2012 ◽  
Vol 5 (10) ◽  
pp. 2023-2031 ◽  
Author(s):  
Shanshan Jiang ◽  
Wei Zhou ◽  
Yingjie Niu ◽  
Zhonghua Zhu ◽  
Zongping Shao
Keyword(s):  
Phase Transition ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel

scholarly journals Phase-transition temperature suppression to achieve cubic GeTe and high thermoelectric performance by Bi and Mn codoping

2018 ◽  
Vol 115 (21) ◽  
pp. 5332-5337 ◽  
Author(s):  
Zihang Liu ◽  
Jifeng Sun ◽  
Jun Mao ◽  
Hangtian Zhu ◽  
Wuyang Ren ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
High Performance ◽  
Hole Concentration ◽  
Rhombohedral Structure ◽  
Germanium Telluride ◽  
Strong Point ◽  
Bi Doping ◽  
Valence Bands

Germanium telluride (GeTe)-based materials, which display intriguing functionalities, have been intensively studied from both fundamental and technological perspectives. As a thermoelectric material, though, the phase transition in GeTe from a rhombohedral structure to a cubic structure at ∼700 K is a major obstacle impeding applications for energy harvesting. In this work, we discovered that the phase-transition temperature can be suppressed to below 300 K by a simple Bi and Mn codoping, resulting in the high performance of cubic GeTe from 300 to 773 K. Bi doping on the Ge site was found to reduce the hole concentration and thus to enhance the thermoelectric properties. Mn alloying on the Ge site simultaneously increased the hole effective mass and the Seebeck coefficient through modification of the valence bands. With the Bi and Mn codoping, the lattice thermal conductivity was also largely reduced due to the strong point-defect scattering for phonons, resulting in a peak thermoelectric figure of merit (ZT) of ∼1.5 at 773 K and an average ZT of ∼1.1 from 300 to 773 K in cubic Ge0.81Mn0.15Bi0.04Te. Our results open the door for further studies of this exciting material for thermoelectric and other applications.

Suppressed the High-Voltage Phase Transition of P2-Type Oxide Cathode for High-Performance Sodium-Ion Batteries

2019 ◽  
Vol 11 (16) ◽  
pp. 14848-14853 ◽  
Author(s):  
Kezhu Jiang ◽  
Xueping Zhang ◽  
Haoyu Li ◽  
Xiaoyu Zhang ◽  
Ping He ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Voltage ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Oxide Cathode ◽  
Voltage Phase

Actuation of untethered pneumatic artificial muscles and soft robots using magnetically induced liquid-to-gas phase transitions

2020 ◽  
Vol 5 (41) ◽  
pp. eaaz4239 ◽  
Author(s):  
Seyed M. Mirvakili ◽  
Douglas Sim ◽  
Ian W. Hunter ◽  
Robert Langer
Keyword(s):  
Phase Transition ◽  
Gas Phase ◽  
High Performance ◽  
Artificial Muscle ◽  
Artificial Muscles ◽  
Peak Strain ◽  
Soft Robots ◽  
Robotic Arms ◽  
Actuation Mechanism ◽  
Pneumatic Artificial Muscles

Pneumatic artificial muscles have been widely used in industry because of their simple and relatively high-performance design. The emerging field of soft robotics has also been using pneumatic actuation mechanisms since its formation. However, these actuators/soft robots often require bulky peripheral components to operate. Here, we report a simple mechanism and design for actuating pneumatic artificial muscles and soft robotic grippers without the use of compressors, valves, or pressurized gas tanks. The actuation mechanism involves a magnetically induced liquid-to-gas phase transition of a liquid that assists the formation of pressure inside the artificial muscle. The volumetric expansion in the liquid-to-gas phase transition develops sufficient pressure inside the muscle for mechanical operations. We integrated this actuation mechanism into a McKibben-type artificial muscle and soft robotic arms. The untethered McKibben artificial muscle generated actuation strains of up to 20% (in 10 seconds) with associated work density of 40 kilojoules/meter3, which favorably compares with the peak strain and peak energy density of skeletal muscle. The untethered soft robotic arms demonstrated lifting objects with an input energy supply from only two Li-ion batteries.

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