Topic
Ionic conductivity
About: Ionic conductivity is a research topic. Over the lifetime, 19412 publications have been published within this topic receiving 519167 citations.
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TL;DR: In this paper, the structural properties and synthesis methods of materials in the binary system are summarized and possible mechanisms are proposed for the fast ionic conduction observed in glass-ceramics.
121 citations
TL;DR: The main theoretical concepts on ionic conduction at interfaces, especially the space charge layer model, are summarized in the first part of this review: ion trapping or redistribution leads to charge carrier accumulation, depletion or inversion and, consequently, to conductivity changes in composite materials as mentioned in this paper.
Abstract: The main theoretical concepts on ionic conduction at interfaces, especially the space charge layer model, are summarized in the first part of this review: ion trapping or redistribution leads to charge carrier accumulation, depletion or inversion and, consequently, to conductivity changes in composite materials. Experimental confirmations of the space charge layer model and the complementary percolation model are discussed. Major developments of ionic conductor composite materials over the last 25 years are presented in the second part, including lithium and other alkaline ion conductors, copper and silver ion conductors, di- and trivalent cation and anion conductors, glass and polymer composites. Some future trends and research needs are indicated in conclusion.
120 citations
TL;DR: In this paper, the dependence of ionic conductivity on the grain size of a lamellar block copolymer electrolyte was studied, using a freeze-dried mixture of poly(styrene)-block-poly(ethylene oxi...
Abstract: A systematic study of the dependence of ionic conductivity on the grain size of a lamellar block copolymer electrolyte was performed. A freeze-dried mixture of poly(styrene)-block-poly(ethylene oxi...
120 citations
TL;DR: Insight into the effects of polyelectrolyte side chains on ion transport can guide us in choosing better poly electrolytes for a broad spectrum of applications, including bioelectronics, neural implants, battery, and so on.
Abstract: Polyelectrolytes have many important functions in both living organisms and man-made applications One key property of polyelectrolytes is the ionic conductivity due to their porous networks that allow the transport of water and small molecular solutes Among polyelectrolytes, zwitterionic polymers have attracted huge attention for applications that involve ion transport in a polyelectrolyte matrix; however, it is still unclear how the functional groups of zwitterionic polymer side chains affect their ion transport and swelling properties In this study, zwitterionic poly(carboxybetaine acrylamide), poly(2-methacryloyloxyethyl phosphorylcholine), and poly(sulfobetaine methacrylate) hydrogels were synthesized and their ionic conductivity was studied and compared to cationic, anionic, and nonionic hydrogels The change of the ionic conductivity of zwitterionic and nonionic hydrogels in different saline solutions was investigated in detail Zwitterionic hydrogels showed much higher ionic conductivity than that of the widely used nonionic poly(ethylene glycol) methyl ether methacrylate hydrogel in all tested solutions For both cationic and anionic hydrogels, the presence of mobile counterions led to high ionic conductivity in low salt solutions; however, the ionic conductivity of zwitterionic hydrogels surpassed that of cationic and ionic hydrogels in high salt solutions Cationic and anionic hydrogels showed much higher water content than that of zwitterionic hydrogels in deionized water; however, the cationic hydrogels shrank significantly with increasing saline concentration This work provides insight into the effects of polyelectrolyte side chains on ion transport This can guide us in choosing better polyelectrolytes for a broad spectrum of applications, including bioelectronics, neural implants, battery, and so on
120 citations
TL;DR: In this paper, a carbon fiber reinforced cement with a fiber volume fraction below the percolation threshold involves electrons and ions, and the ratio of the wet ionic conductivity to the dry ionic conivity is much increased by fiber surface treatment and is higher when latex rather than silica fume is used.
120 citations