Search

Your search keyword '"Liang, Lizhe"' showing total 47 results
Start Over Author "Liang, Lizhe"
47 results on '"Liang, Lizhe"'

14. Interfacial Chemistry Design for Hybrid Lithium‐Ion/Metal Batteries Under Extreme Conditions.

Author

Lyu, Taiyu, Luo, Fenqiang, Liang, Lizhe, Wang, Dechao, Tao, Lei, and Zheng, Zhifeng

Abstract

The storage behavior of Li ions in the anode limits the energy density of full cell. Storing entirely as Li ions sacrifices energy density while storing entirely as Li metal shortens cycle life. The hybrid behavior maximizes both energy density and lifespan through good anode candidate and interface engineering. In this work, Li ions storage is tailored in carbon film (CF) as a hybrid Li‐ion/metal to reduce Li metal consumption at low N/P ratios. A series of weakly solvating electrolytes are screened to enhance the Li intercalation ability of the CF anode while inducing highly reversible Li metal plating/stripping. Among them, 1 m LiFSI‐THF‐0.5 wt.%LiNO3 electrolyte achieves a low interfacial energy barrier, allowing the CF anode not only to have the highest intercalation capacity of 236.5 mAh g−1, but also to exhibit excellent cycling stability and high Coulombic efficiency, even at fast charging and low temperature. The NCM811||CF full cell with a low N/P ratio of 0.5 delivers a capacity of 527.3 mAh g−1 at 25 °C, and 381.5 mAh g−1 at −20 °C, achieving energy densities of 312.6 and 223.7 Wh kg−1, respectively. 100 mAh pouch cell can be cycled stably over 500 cycles, with a capacity retention of 83.0%. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

16. Traditional Chinese Exercise for Rehabilitation from Coronary Heart Disease: A Systematic Review and Meta-Analysis

Author

Xu, NingYang, primary, Zhang, Shi, additional, Zhang, Fan, additional, Liu, Yue, additional, Li, Hang, additional, Zhou, ZiQi, additional, Zhang, Bin, additional, Jin, SiAn, additional, Kong, DeZhao, additional, Han, XiaoMeng, additional, Zhao, Yu, additional, Li, ZiWei, additional, Wang, JianHua, additional, Liang, LiZhe, additional, and Li, GuoXin, additional

Published
2024
Full Text
View/download PDF

28. Composite ionic liquid and polymer membranes for reactive separation at elevated temperature

Author

Liang, Lizhe

Subjects
660.28424
Abstract

This thesis studies composite ionic liquid and polymer membranes (CILPMs} for gas separation and reactive separation membranes (RSMs) for reactive separation at elevated temperature. The aim of this investigation is to develop feasible CILPMs and RSM s, and optimize operating conditions to achieve high permeability and selectivity for gas separation. ClLPMs are composed of ionic liquids for facilitating gases through membranes and polymers as support. Ionic liquids: [C4mim][NTh], [C4mim j[PF6] , [C4mim][FAP] and polymers: PMDA-ODA PI, PBI were used to fabricate CILPMs in this project. A measurement rig was designed and built to measure permeabilities and selectivities of the CILPMs for H2, N2, CO, CO2 and CH4 at various pressures and temperatures. According to the results, gas permeability and selectivity of Cl l PMs were rarely changed with the pressure but greatly affected by the temperature. Normally, permeability increased and selectivity decreased with the rising of the temperature. The presence of ionic liquid in CILPMs had positive effect on CO2 permeation through the membranes, and therefore improved CO2 separation performance. However, H2 separation performance of the membranes was reduced by ionic liquids. RSMs combine the reaction and the separation in the membrane processes. In this project, RSMs were composed of CILPMs with dissolved catalysts for gas reaction. Ruthenium complexes were chosen as the catalyst for water gas shift reaction which transfers CO into H2 . The aim of reactive separation was increasing HJCO selectivity of the membranes and reducing the CO concentration in H2 stream to a very low level. A measurement rig for testing reactive separation was designed and built. According to the results, the water gas shift reaction occurred in RSMs increased the HJCO selectivity significantly under optimized conditions. A mathematical model was developed to simulate the reactive separation process and explain the results. CILPMs and RSMs showed improvements for gas separation and more research is required for optimizing these membranes.

Published
2013

38. Electricity Generation from Capillary-Driven Ionic Solution Flow in a Three-Dimensional Graphene Membrane

Author

Liang Lizhe, Pei Kang Shen, Zhiqun Tian, Shibin Yin, and Changzheng Li

Subjects
Materials science, Liquid-crystal display, Capillary action, Graphene, business.industry, Nanogenerator, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Streaming current, 0104 chemical sciences, law.invention, Electricity generation, law, Optoelectronics, General Materials Science, 0210 nano-technology, business, Energy harvesting, Voltage
Abstract

Harvesting energy from the ambient environment provides great promise in the applications of micro/nanodevices and self-powered systems. Herein, we report a novel energy-scavenging method where an ionic solution infiltrating into a three-dimensional graphene (3DG) membrane can spontaneously generate electricity under ambient conditions. A constructed 3DG nanogenerator (3DGNG) with an effective size of 0.5 × 2 cm can produce a continuous voltage of ∼0.28 V and a remarkable output current of ∼62 μA. The voltage is higher than those generated from the interaction between water and carbon nanomaterials in previous research typically in the range of microvolts to millivolts. Moreover, we demonstrate the potential application of the 3DGNG by illuminating a liquid crystal display (LCD) directly with 10 3DGNGs in series. These results present a novel avenue for energy harvesting and show bright potential applications in small devices and self-powered systems.

Published
2019

45. Dynamic Characteristic of the Drive Train of DFIG Wind Turbines during Grid Faults

Author

Liang Lizhe, Xing Zuoxia, and Yao Xing-jia

Subjects
Engineering, Wind power, Control theory, Rotor (electric), law, business.industry, Induction generator, Torque, Drivetrain, Damping torque, business, Turbine, law.invention
Abstract

During a grid voltage drop ,a problem is resonances in the drive-train shaft between the wind turbine and induction generator. Disadvantageous effects caused by this are noticeable vibrations and high mechanical stresses due to torque oscillations. The oscillations can be damped using The Drive Train Damper, which is used to mitigate fatigue loading of drive train components, controller consisting of a nonlinear observer to estimate the torque in the rotor and computes a damping torque signal that is added to the driver’s demand. The control algorithm was implemented in the existing motor control unit without any additional hardware cost. The controller was successfully tested in a test. The resonances can essentially be eliminated.

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results