Thermal Coefficient of Redox Potential of Alkali Metals

Configuration entropy effect on temperature coefficient of redox potential of P2-Na x CoO2

“…α is cited from literature. [7] Ion species Solute Solvent α (mV/K) α solid (mV/K) α electrolyte (mV/K) 0.52 meV for Na at 300 K. These S values are consistent with the experiment. [31] In Table 1, we summarizes α, α solid , and α electrolyte .…”

“…Here, let us evaluate α electrolyte (= α − α solid ) concerning to Li + and Na + . Fukuzumi et al [7] reported α for Li + and Na + in several solvents, i.e., ethylene carbonate (EC) / diethyl carbonate (DEC), γ-butyrolactone (GBL), PC, and 1,2-dimethoxyethane (DME). On the other hand, α solid is evaluated by first principles calculation.…”

“…Furthermore, ∆S can be divided into the components due to electrode solid material (∆S solid ) and electrolyte (∆S electrolyte ). [7] Recently, Fukuzumi et al [8] investigated α of LiFePO 4 , which is one of the most prototypical intercalation compounds used as a cathode for lithium-ion secondary batteries (LIBs). Importantly, Li x FePO 4 shows phase separation (PS) into FePO 4 and LiFePO 4 during the Li + intercalation process as…”

Vibrational entropy as an indicator of temperature coefficient of redox potential in conjugated polymers

“…The temperature coefficient (α Li ) of Li in the electrolyte (EC/DEC containing 1 mol/L LiClO 4 ) is 0.76 mV/K. 7) Therefore, α is obtained using the equation α = α cell + 0.76 mV/K.…”

The effect of 3d-electron configuration entropy on the temperature coefficient of redox potential in Co1−zMnz Prussian blue analogues

“…Furthermore, ∆S can be divided into the components due to electrode solid material (∆S solid ) and electrolyte (∆S electrolyte ). 16,17 In this paper, we investigated α of Na x Co 1−z Mn z [Fe(CN) 6 ] y (Co 1−z Mn z -PBA) against Mn concentration (z). We found that α(z) ≈ α(0) [α(0) and α(z) are the temperature coefficients of redox potential of NCF90 and Co 1−z Mn z -PBA, respectively] in the Co/Mn redox region (z ≤ 0.7) while α(z) ≪ α(0) in the Fe redox region (z ≥ 0.7).…”