Active mass analysis on thin films of electrodeposited manganese dioxide for electrochemical capacitors

Cross, Andrew D.; Morel, Alban; Drozd, Mickael; Olcomendy, I.; Hollenkamp, Anthony F.; Donne, Scott W.

doi:10.1016/j.electacta.2012.08.028

Cited by 24 publications

(14 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 However, the low abundance and high cost of this precious metal prevent its commercial application. 6 Increasing interest has been shown in iron oxide, 7 cobalt oxide, 8 manganese oxide, 9 and nickel oxide 10 as alternative materials to RuOx.…”

Section: Introductionmentioning

confidence: 99%

Morphology and composition control of manganese oxide by the pulse reverse electrodeposition technique for high performance supercapacitors

Lee

Cho

et al. 2013

J. Mater. Chem. A

View full text Add to dashboard Cite

Manganese oxide (MnOx) nanostructures were synthesized by the pulse reverse electrodeposition technique for electrode materials of supercapacitors. The morphology and composition of MnOx were controlled by the pattern of applying potential. In the case where constant potential (CP) was applied, a bulk film of aggregated MnO 2 particles was obtained. However, Mn 2 O 3 nanostructure was obtained by pulse potential (PP) or pulse reverse potential (PRP) methods (1/0 V or 1/À1 V). Furthermore, fine nanorod morphology with high electrical conductivity was produced by the pulse reverse potential method which resulted in excellent capacitive performance. The specific capacitance of the Mn 2 O 3 nanorod structure produced by the PRP method was 448 F g À1 at 10 mV s À1 . From charge-discharge testing, specific capacitance values of 306 F g À1 and 211 F g À1 were obtained at current densities of 10 A g À1 and 100 A g À1 , respectively, indicating high rate capability. The electrode provided exhibited excellent electrochemical stability with a retention life of 99% after 20 000 cycles.

show abstract

Section: Introductionmentioning

confidence: 99%

Morphology and composition control of manganese oxide by the pulse reverse electrodeposition technique for high performance supercapacitors

Lee

Cho

et al. 2013

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…Finally, it becomes a pure two-electron process (with MCR = 46.9 g mol À 1 ) at the more positive potential plateau. [23] The above two anodic processes are similar to the MnO 2 deposition in 1 m ZnSO 4 + 0.1 m MnSO 4 . For the cathodic process, the sloping segment at more positive potentials has an MCR of 20.6 g mol À 1 , indicating that the MnO 2 dissolution is not the only process in this step.…”

Section: Chemsuschemmentioning

confidence: 75%

Complementary Operando Electrochemical Quartz Crystal Microbalance and UV/Vis Spectroscopic Studies: Acetate Effects on Zinc‐Manganese Batteries

Wei

et al. 2023

ChemSusChem

View full text Add to dashboard Cite

Zinc‐ion batteries, in which zinc ions and protons do intercalation and de‐intercalation during battery cycling with various proposed mechanisms under debate, have been studied. Recently, electrolytic zinc‐manganese batteries, exhibiting the pure dissolution‐deposition behavior with a large charge capacity, have been accomplished through using electrolytes with Lewis acid. However, the complicated chemical environment and mixed products hinder the investigation though it is crucial to understand the detailed mechanism. Here, cyclic voltammetry coupled electrochemical quartz crystal microbalance (EQCM) and ultraviolet‐visible spectrophotometry (UV–Vis) are respectively, for the very first time, used to study the transition from zinc‐ion batteries to zinc electrolytic batteries by the continuous addition of acetate ions. These complementary techniques operando trace the mass and the composition evolution. The observed formation and dissolution of zinc hydroxide sulfate (ZHS) and manganese oxides evince the effect of acetate ions on zinc‐manganese batteries from an alternative perspective. Both the amount of acetate and the pH value have large impacts on the capacity and Coulombic efficiency of the MnO2 electrode, and thus they should be optimized when constructing a full zinc‐manganese battery with high rate capability and reversibility.

show abstract

“…5. As has been discussed previously [22], this elevated mass is likely due to the inclusion of water and/or electrolyte into the pores of the electrodeposited manganese dioxide. With the addition of increasing amounts of PW, Fig.…”

Section: Instantaneousmentioning

confidence: 94%

Mesoscale Morphological Control of Electrodeposited Manganese Dioxide Films

Gibson

Burns

Dupont

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Active mass analysis on thin films of electrodeposited manganese dioxide for electrochemical capacitors

Cited by 24 publications

References 19 publications

Morphology and composition control of manganese oxide by the pulse reverse electrodeposition technique for high performance supercapacitors

Morphology and composition control of manganese oxide by the pulse reverse electrodeposition technique for high performance supercapacitors

Complementary Operando Electrochemical Quartz Crystal Microbalance and UV/Vis Spectroscopic Studies: Acetate Effects on Zinc‐Manganese Batteries

Mesoscale Morphological Control of Electrodeposited Manganese Dioxide Films

Contact Info

Product

Resources

About