Lithium trapping in alloy forming electrodes and current collectors for lithium based batteries

Significant capacity losses are generally seen for batteries containing high-capacity lithium alloy forming anode materials such as silicon, tin and aluminium. These losses are generally ascribed to a combination of volume expansion effects and irreversible electrolyte reduction reactions. Here, it is shown, based on e.g. elemental analyses of cycled electrodes, that the capacity losses for tin nanorod and silicon composite electrodes in fact involve diffusion controlled trapping of lithium in the electrodes. While an analogous effect is also demonstrated for copper, nickel and titanium current collectors, boron-doped diamond is shown to function as an effective lithium diffusion barrier. The present findings indicate that the durability of lithium based batteries can be improved significantly via proper electrode design or regeneration of the used electrodes. © The Royal Society of Chemistry 2017.

TEKNIK OCH TEKNOLOGIER Materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering hsv//eng
NATURVETENSKAP Kemi Oorganisk kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Inorganic Chemistry hsv//eng
Steel Forming and Surface Engineering
Stålformning och ytteknik
LI-ION BATTERIES; ENERGY-STORAGE DEVICES; NEGATIVE ELECTRODES; ELECTROCHEMICAL LITHIATION; PHOTOELECTRON-SPECTROSCOPY; SILICON ELECTRODES; METAL ANODES; ELECTROLYTES; INSERTION; SURFACE

Lindgren, FredrikUppsala universitet,Strukturkemi(Swepub:uu)freli300 (author)
Böhme, Solveig,1987-Uppsala universitet,Strukturkemi(Swepub:uu)solbo789 (author)
Nordh, Tim,1988-Uppsala universitet,Strukturkemi(Swepub:uu)timno549 (author)
Zou, Yiming,1985-Uppsala universitet,Oorganisk kemi(Swepub:uu)zouyi826 (author)
Pettersson, JeanUppsala universitet,Analytisk kemi(Swepub:uu)jpe18455 (author)
Bexell, UlfHögskolan Dalarna,Materialteknik,Dalarna Univ, Sch Technol & Business Studies Mat Technol, Falun, Sweden.(Swepub:du)ubx (author)
Boman, MatsUppsala universitet,Oorganisk kemi(Swepub:uu)matsboma (author)
Edström, Kristina,1958-Uppsala universitet,Strukturkemi(Swepub:uu)ked02526 (author)
Nyholm, Leif,1961-Uppsala universitet,Oorganisk kemi(Swepub:uu)lny18455 (author)
Uppsala universitetOorganisk kemi (creator_code:org_t)

In:Energy & Environmental Science: Royal Society of Chemistry (RSC)10:6, s. 1350-13571754-56921754-5706

By the author/editor: Rehnlund, David, ...; Lindgren, Fredri ...; Böhme, Solveig, ...; Nordh, Tim, 1988 ...; Zou, Yiming, 198 ...; Pettersson, Jean; show more...; Bexell, Ulf; Boman, Mats; Edström, Kristin ...; Nyholm, Leif, 19 ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

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