Author
Colin A. Vincent
Other affiliations: Government of the United Kingdom
Bio: Colin A. Vincent is an academic researcher from University of St Andrews. The author has contributed to research in topics: Electrolyte & Conductivity. The author has an hindex of 27, co-authored 96 publications receiving 4031 citations. Previous affiliations of Colin A. Vincent include Government of the United Kingdom.
Topics: Electrolyte, Conductivity, Lithium, Ionic conductivity, Electrochemistry
Papers published on a yearly basis
Papers
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TL;DR: In this article, the transference number of lithium and trifluoromethanesulphonate ions in poly(ethylene oxide) at 90°C was measured and a mean value of 0.46 ± 0.02 was reported for lithium.
1,385 citations
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TL;DR: In this paper, the steady state current flow following the application of a dc voltage to cells of the form M|M+X−|M, where M is a binary solid electrolyte and X− is an electrode electroactive towards the M+ ions, is discussed.
496 citations
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TL;DR: In this article, straight-forward methods based on dc techniques are described which permit reliable evaluation of both the total conductivity and transference numbers of binary polymer electrolytes, and measurements are presented for PEOLiCF 3 SO 3 (9:1) electrolyte as a function of temperature.
312 citations
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TL;DR: The principles for realising commercially successful lithium secondary batteries are now well established as discussed by the authors, and what is necessary during the next decade is the application of sophisticated solid state chemistry and materials science in order to find optimised solutions to the many conflicting requirements placed on the battery materials.
190 citations
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TL;DR: In this paper, the authors investigated cation mobility in poly (ethylene oxide) hosts with molecular weights ranging from 400 to 4 × 10 6, using electrochemical and pulsed field gradient NMR techniques.
172 citations
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TL;DR: Some of the recent scientific advances in nanomaterials, and especially in nanostructured materials, for rechargeable lithium-ion batteries are reviewed.
Abstract: Energy storage is more important today than at any time in human history. Future generations of rechargeable lithium batteries are required to power portable electronic devices (cellphones, laptop computers etc.), store electricity from renewable sources, and as a vital component in new hybrid electric vehicles. To achieve the increase in energy and power density essential to meet the future challenges of energy storage, new materials chemistry, and especially new nanomaterials chemistry, is essential. We must find ways of synthesizing new nanomaterials with new properties or combinations of properties, for use as electrodes and electrolytes in lithium batteries. Herein we review some of the recent scientific advances in nanomaterials, and especially in nanostructured materials, for rechargeable lithium-ion batteries.
5,441 citations
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TL;DR: In this article, the mechanisms of lithium-ion battery ageing are reviewed and evaluated, and the most promising candidate as the power source for (hybrid) electric vehicles and stationary energy storage.
3,115 citations
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TL;DR: In this article, the authors provide a background overview and discuss the state of the art, ion-transport mechanisms and fundamental properties of solid-state electrolyte materials of interest for energy storage applications.
Abstract: Solid-state electrolytes are attracting increasing interest for electrochemical energy storage technologies. In this Review, we provide a background overview and discuss the state of the art, ion-transport mechanisms and fundamental properties of solid-state electrolyte materials of interest for energy storage applications. We focus on recent advances in various classes of battery chemistries and systems that are enabled by solid electrolytes, including all-solid-state lithium-ion batteries and emerging solid-electrolyte lithium batteries that feature cathodes with liquid or gaseous active materials (for example, lithium–air, lithium–sulfur and lithium–bromine systems). A low-cost, safe, aqueous electrochemical energy storage concept with a ‘mediator-ion’ solid electrolyte is also discussed. Advanced battery systems based on solid electrolytes would revitalize the rechargeable battery field because of their safety, excellent stability, long cycle lives and low cost. However, great effort will be needed to implement solid-electrolyte batteries as viable energy storage systems. In this context, we discuss the main issues that must be addressed, such as achieving acceptable ionic conductivity, electrochemical stability and mechanical properties of the solid electrolytes, as well as a compatible electrolyte/electrode interface. This Review details recent advances in battery chemistries and systems enabled by solid electrolytes, including all-solid-state lithium-ion, lithium–air, lithium–sulfur and lithium–bromine batteries, as well as an aqueous battery concept with a mediator-ion solid electrolyte.
2,749 citations
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TL;DR: In this article, the authors showed that nanometre-sized ceramic powders can be used as solid plasticizers for polyethylene oxide (PEO) electrolytes to prevent crystallization on annealing from amorphous state above 60°C.
Abstract: Ionically conducting polymer membranes (polymer electrolytes) might enhance lithium-battery technology by replacing the liquid electrolyte currently in use and thereby enabling the fabrication of flexible, compact, laminated solid-state structures free from leaks and available in varied geometries1. Polymer electrolytes explored for these purposes are commonly complexes of a lithium salt (LiX) with a high-molecular-weight polymer such as polyethylene oxide (PEO). But PEO tends to crystallize below 60 °C, whereas fast ion transport is a characteristic of the amorphous phase. So the conductivity of PEO–LiX electrolytes reaches practically useful values (of about 10−4 S cm−1) only at temperatures of 60–80 °C. The most common approach for lowering the operational temperature has been to add liquid plasticizers, but this promotes deterioration of the electrolyte's mechanical properties and increases its reactivity towards the lithium metal anode. Here we show that nanometre-sized ceramic powders can perform as solid plasticizers for PEO, kinetically inhibiting crystallization on annealing from the amorphous state above 60 °C. We demonstrate conductivities of around 10−4 S cm−1 at 50 °C and 10−5 S cm−1 at 30 °C in a PEO–LiClO4 mixture containing powders of TiO2 and Al2O3 with particle sizes of 5.8–13 nm. Further optimization might lead to practical solid-state polymer electrolytes for lithium batteries.
2,695 citations
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TL;DR: In this article, the main characteristics of the electroactive phases of polyvinylidene fluoride and copolymers are summarized, and some interesting potential applications and processing challenges are discussed.
2,242 citations