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PhD dissertation-Jinwei.pdf (6.2 MB)

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BIOELECTRICITY INSPIRED POLYMER ELECTROLYTE MEMBRANES FOR SENSING AND ENGERGY HARVESTING APPLICATIONS

Cao, Jinwei
http://rave.ohiolink.edu/etdc/view?acc_num=akron1541721597835991

Abstract Details

2018, Doctor of Philosophy, University of Akron, Polymer Engineering.
Some living cells are known to generate bioelectricity by manipulating the ion concentration gradient across the cell membrane via passive and active ion transports, which are controlled by ion gates and pumps. This process involves polarization and depolarization of the cell membrane, resulting in electrical potential often called membrane potential. Neuron cells utilize such ionic polarization process to send electrical signals for communication and control of body parts. On the other hand, electroplaques in electric eels can store sizable electrical energy and release it on demand for defending and hunting. A similar ionic polarization potential can be generated via bending deformation (as a means of exerting a pressure (stress) gradient) of polymer electrolyte membrane (PEM), which was originally developed as ion conducting solid medium for solid-state Li-ion batteries. This is the motivation of the present dissertation to explore the novel flexoelectric effect in the aforementioned solid-state PEM by subjecting it to mechanical deformation. A plausible mechanism has been proposed to explain the mechano-electrical transduction in the above solid PEMs, wherein ionic polarization occurred as a result of ion diffusion under pressure (stress) gradient. The flexoelectric coefficient has been measured to be as high as ~300 µC/m, which is several orders of magnitude higher relative to those of other flexoelectric materials hitherto reported in literature. These new and fascinating features found in the present solid PEM system open up a new avenue of polymeric energy materials for diverse applications such as flexible sensor and energy harvesting devices.
Thein Kyu (Advisor)
199 p.
Energy; Engineering; Materials Science; Polymer Chemistry; Polymers
Energy harvesting, flexoelectricity, polymer electrolyte membrane, sensor, piezoelectricity, flexible sensor

Recommended Citations

Citations

  • Cao, J. (2018). BIOELECTRICITY INSPIRED POLYMER ELECTROLYTE MEMBRANES FOR SENSING AND ENGERGY HARVESTING APPLICATIONS [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541721597835991

    APA Style (7th edition)

  • Cao, Jinwei. BIOELECTRICITY INSPIRED POLYMER ELECTROLYTE MEMBRANES FOR SENSING AND ENGERGY HARVESTING APPLICATIONS. 2018. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1541721597835991.

    MLA Style (8th edition)

  • Cao, Jinwei. "BIOELECTRICITY INSPIRED POLYMER ELECTROLYTE MEMBRANES FOR SENSING AND ENGERGY HARVESTING APPLICATIONS." Doctoral dissertation, University of Akron, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541721597835991

    Chicago Manual of Style (17th edition)

akron1541721597835991
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© 2018, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.