Showing papers by "Colin A. Vincent published in 1992"
TL;DR: In this paper, the actual transference numbers of M + and X − ion-constituents in polymer electrolytes have been determined for an amorphous poly (ethylene oxide)-based polymer electrolyte containing lithium perchlorate at 120°C by means of the Hittorf technique.
95 citations
TL;DR: In this paper, the authors investigated the rate of lithium diffusion in the layered intercalation compound Li 1−xNiO2 and found that the maximum value for DLi = 2×10−7cm2s−1 and was amongst the highest observed for a lithium intercalator compound.
59 citations
Patent•
24 Jan 1992TL;DR: ABA triblock polymers are those where HC═CH sites in the polybutadiene segment of a polystyrene-polybutadienes-polystyrene polymer are replaced by CH2 CH--X--(CH2 CH2 O)m --R, where X is link, R is alkyl.
Abstract: ABA triblock polymers, the A block being rigid having a transition away from its rigid phase above 70° C., the B block being wholly or partly ion-coordinating, elastomeric or amorphous, the B/A block length ratio being greater than 1. When the B block is complexed with an ionic salt these polymers act as polymeric electrolytes which may be used in cells etc. Preferred polymers are those where HC═CH sites in the polybutadiene segment of a polystyrene-polybutadiene-polystyrene polymer are replaced by --CH2 CH--X--(CH2 CH2 O)m --R, where X is link, R is alkyl. A preferred salt is LiCF3 SO3.
34 citations
TL;DR: In this paper, the steady-state current flow in a polymer electrolyte when a constant potential is applied to a symmetric cell of the type has been determined as a function of both the magnitude of the dc potential and the salt concentration in amorphous PEO:LiCF 3 SO 3 and PEO-LiClO 4 systems.
25 citations
TL;DR: The electrical double layer at the interface between a solid polymer electrolyte and a metal electrode is discussed in this article, where it is shown that when the electrode is negatively charged the interface behaves as a simple parallel plate capacitor, i.e., the capacitance is independent of potential.
4 citations
TL;DR: In this paper, conductivity, transport and interfacial studies on an amorphous methoxy-linked poly(ethylene oxide)/Zn(CF 3 SO 3 ) 2 system over the O:Zn range 100:1 to 10:1 are reported.
3 citations