Polyaniline-wrapped MnMoO4 as an active catalyst for hydrogen production by electrochemical water splitting

Mohaseen S. Tamboli, Supriya A. Patil, Asiya M. Tamboli, Santosh S. Patil, Nguyen Tam Nguyen Truong, Kiyoung Lee, C. S. Praveen, Nabeen K. Shrestha, Chinho Park, Bharat B. Kale

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Developing efficient, low-cost, and environment-friendly electrocatalysts for hydrogen generation is critical for lowering energy usage in electrochemical water splitting. Moreover, for commercialization, fabricating cost-efficient, earth-abundant electrocatalysts with superior characteristics is of urgent need. Towards this endeavor, we report the synthesis of PANI-MnMoO4 nanocomposites using a hydrothermal approach and an in situ polymerization method with various concentrations of MnMoO4. The fabricated nanocomposite electrocatalyst exhibits bifunctional electrocatalytic activity towards the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) at a lower overpotential of 410 mV at 30 mA cm−2 and 155 mV at 10 mA cm−2, respectively in an alkaline electrolyte. Furthermore, while showing overall water splitting (OWS) performance, the optimized PM-10 (PANI-MnMoO4) electrode reveals the most outstanding OWS performance with a lower cell voltage of 1.65 V (vs. RHE) at a current density of 50 mA cm−2 with an excellent long-term cell resilience of 24 h.

Original languageEnglish
Pages (from-to)6027-6035
Number of pages9
JournalDalton Transactions
Volume51
Issue number15
DOIs
StatePublished - 15 Mar 2022

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