Abstract
AbstractInvited for this month's cover picture is the review team led by Carmen Cavallo (University of Oslo). The cover picture shows a team of scientists performing operando studies on a sodium battery, as if it were a real patient in a hospital. Operando X‐ray methodologies deliver valuable information about the structural, atomistic, and morphological changes while the battery is actually in its working state. Read the full text of the Review at 10.1002/batt.202000294.
Highlights
Electrification of the energy sector represents a major challenge for society
Na-ion batteries (NIBs) are inferior to Li-ion batteries (LIBs) in energy density, they are a potential competitor to LIBs for large-scale stationary storage [4] and applications where the lower cost of NIB’s components becomes a significant factor
This review is focused on the use of X-ray based operando methods for studying the chemical transformations of active materials during cycling of NIBs
Summary
Electrification of the energy sector represents a major challenge for society. Novel and powerful rechargeable batteries are an essential part of the solution. In synthetic chemistry and catalysis, it is used to describe structural measurements conducted during chemical reactions, but for battery materials, in situ is used to describe any experiment where the material remains inside the battery cell (or another environment used for electrochemistry). An operando experiment would involve logging electrochemical cycling data while simultaneously performing structural measurements with subsequent analysis linking the results together, as illustrated in Figure 1 [14, 17, 18]. In situ and operando measurements do not require the removal of the studied materials from the battery, but they deliver their own disadvantages Both types typically require the use of specially designed cells and equipment (see section 5 of the present review) [20,21,22,23]. Such results are grouped in this review according to the main operando technique used in the cited work
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