Unknown

Dataset Information

0

Effect of the Anionic Counterpart: Molybdate vs. Tungstate in Energy Storage for Pseudo-Capacitor Applications.


ABSTRACT: Nickel-based bimetallic oxides (BMOs) have shown significant potential in battery-type electrodes for pseudo-capacitors given their ability to facilitate redox reactions. In this work, two bimetallic oxides, NiMoO4 and NiWO4, were synthesized using a wet chemical route. The structure and electrochemical properties of the pseudo-capacitor cathode materials were characterized. NiMoO4 showed superior charge storage performance in comparison to NiWO4, exhibiting a discharge capacitance of 124 and 77 F.g-1, respectively. NiMoO4, moreover, demonstrates better capacity retention after 1000 cycles with 87.14% compared to 82.22% for NiWO4. The lower electrochemical performance of the latter was identified to result from the redox behavior during cycling. NiWO4 reacts in the alkaline solution and forms a passivation layer composed of WO3 on the electrode, while in contrast, the redox behavior of NiMoO4 is fully reversible.

SUBMITTER: Sharma P 

PROVIDER: S-EPMC7996838 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC6425441 | biostudies-other
| S-EPMC8622521 | biostudies-literature
| S-EPMC3619290 | biostudies-literature
| S-EPMC5655704 | biostudies-literature
| S-EPMC9050571 | biostudies-literature
| S-EPMC11297324 | biostudies-literature
| S-EPMC1130838 | biostudies-other
| S-EPMC7182882 | biostudies-literature
| S-EPMC10054839 | biostudies-literature
| S-EPMC6629648 | biostudies-literature