Glossary
Activation energy – The energy required for a chemical reaction (rate constant) or a
physical process (conduction, diffusion, …) to occur. It is generally obtained
from an Arrhenius plot of the relevant chemical or physical quantity.
Admittance – The admittance Y of an electric circuit is the inverse of the impedance Z of the circuit and is expressed in siemens (S). It is a complex quantity
whose real part is the conductance G of the circuit and whose imaginary part
is the susceptance B.
Amalgam – In chemistry, an amalgam denotes a metallic alloy. The most common
amalgams involve liquid mercury.
Amperometric sensor – An electrochemical device for measuring the concentration
of a chemical species by measuring the diffusion limit current (of oxidation
or reduction). The sensor must be operated under a current flow.
Anionic Frenkel disorder (pair) – A pair of structure defects formed by thermal agitation that only affect the anionic sublattice of a pure ionic crystal. This is the
case for the pair F ′
i + V
•
F in barium fluoride BaF 2 .
Arrhenius coordinates – A representation that consists of plotting the logarithm
of a physical quantity as a function of the inverse absolute temperature. It
provides information, in particular, about the activated nature of the quantity.
Bode representation – A manner to represent complex impedance spectra that consists
of showing, in logarithmic coordinates, the change in an impedance component (modulus, argument, real part, or imaginary part) of an electric circuit
or of an arbitrary sample as a function of angular frequency. In contrast to the
Nyquist representation, this representation is more often used by physicists.
Brouwer diagram – The representation, in logarithmic coordinates, of the concentration of structure defects and of electronic species (electrons and holes)
in a pure or doped M a X b compound as a function of the partial pressure of
species M or of species X 2 . It has a strong analogy with the acid-base and
the complexation equilibria present in solution.
Catalyst – A chemical compound that increases the rate of a chemical reaction
without modifying the mass balance of the reaction. It participates in several
© Springer Nature Switzerland AG 2020
A. Hammou and S. Georges, Solid-State Electrochemistry,
https://doi.org/10.1007/978-3-030-39659-6
309
Activation energy – The energy required for a chemical reaction (rate constant) or a
physical process (conduction, diffusion, …) to occur. It is generally obtained
from an Arrhenius plot of the relevant chemical or physical quantity.
Admittance – The admittance Y of an electric circuit is the inverse of the impedance Z of the circuit and is expressed in siemens (S). It is a complex quantity
whose real part is the conductance G of the circuit and whose imaginary part
is the susceptance B.
Amalgam – In chemistry, an amalgam denotes a metallic alloy. The most common
amalgams involve liquid mercury.
Amperometric sensor – An electrochemical device for measuring the concentration
of a chemical species by measuring the diffusion limit current (of oxidation
or reduction). The sensor must be operated under a current flow.
Anionic Frenkel disorder (pair) – A pair of structure defects formed by thermal agitation that only affect the anionic sublattice of a pure ionic crystal. This is the
case for the pair F ′
i + V
•
F in barium fluoride BaF 2 .
Arrhenius coordinates – A representation that consists of plotting the logarithm
of a physical quantity as a function of the inverse absolute temperature. It
provides information, in particular, about the activated nature of the quantity.
Bode representation – A manner to represent complex impedance spectra that consists
of showing, in logarithmic coordinates, the change in an impedance component (modulus, argument, real part, or imaginary part) of an electric circuit
or of an arbitrary sample as a function of angular frequency. In contrast to the
Nyquist representation, this representation is more often used by physicists.
Brouwer diagram – The representation, in logarithmic coordinates, of the concentration of structure defects and of electronic species (electrons and holes)
in a pure or doped M a X b compound as a function of the partial pressure of
species M or of species X 2 . It has a strong analogy with the acid-base and
the complexation equilibria present in solution.
Catalyst – A chemical compound that increases the rate of a chemical reaction
without modifying the mass balance of the reaction. It participates in several
© Springer Nature Switzerland AG 2020
A. Hammou and S. Georges, Solid-State Electrochemistry,
https://doi.org/10.1007/978-3-030-39659-6
309