TY - JOUR
T1 - Investigating the electrocatalytic activity of zirconia atom doped manganese selenide (Zr–MnSe) nanoparticles for OER/HER in an alkaline medium
AU - Munawar, Tauseef
AU - Fatima, Saman
AU - Alam, Mohammed Mujahid
AU - Rafaqat, Muhammad
AU - Al-Sehemi, Abdullah G.
AU - Kumar, Abhinav
AU - Iqbal, Sana
AU - Ponraj, Janarthanan
AU - Khan, Shoukat Alim
AU - Koc, Muammer
AU - Yan, Chang Feng
AU - Iqbal, Faisal
N1 - Publisher Copyright:
© 2025 Hydrogen Energy Publications LLC
PY - 2025/6/18
Y1 - 2025/6/18
N2 - Designing durable and economically feasible electrocatalysts for electrochemical water splitting is important yet challenging. In this study, we synthesized the Zr-doped manganese selenide (Zr–MnSe) using a simple hydrothermal treatment. The doping of the zirconia atom significantly generates a defects-enriched porous coralline structure of Zr–MnSe that brings high surface area and multiple active sites. Various characterization, including XRD, FTIR, TEM/EDX, I–V, and XPS, are used to study its physical properties. The designed porous coralline Zr–MnSe structure is an efficient electrocatalyst with an overpotential of 242 and 157 mV for OER and HER, exhibiting a modest Tafel slope at the desired current density. The reduced charge transfer resistance (1.6 and 1.12 Ω for OER and HER) is evaluated in the corresponding Randles circuit and is responsible for a large functional surface area of 1160 cm2, as confirmed by ECSA. This electrocatalyst delivers excellent electrocatalysis performance with long-term stability of 45/35 h for OER/HER. Thus, zirconium doping tunes the MnSe network, paving new ways to design porous bifunctional catalysts with defective features towards energy conversion systems.
AB - Designing durable and economically feasible electrocatalysts for electrochemical water splitting is important yet challenging. In this study, we synthesized the Zr-doped manganese selenide (Zr–MnSe) using a simple hydrothermal treatment. The doping of the zirconia atom significantly generates a defects-enriched porous coralline structure of Zr–MnSe that brings high surface area and multiple active sites. Various characterization, including XRD, FTIR, TEM/EDX, I–V, and XPS, are used to study its physical properties. The designed porous coralline Zr–MnSe structure is an efficient electrocatalyst with an overpotential of 242 and 157 mV for OER and HER, exhibiting a modest Tafel slope at the desired current density. The reduced charge transfer resistance (1.6 and 1.12 Ω for OER and HER) is evaluated in the corresponding Randles circuit and is responsible for a large functional surface area of 1160 cm2, as confirmed by ECSA. This electrocatalyst delivers excellent electrocatalysis performance with long-term stability of 45/35 h for OER/HER. Thus, zirconium doping tunes the MnSe network, paving new ways to design porous bifunctional catalysts with defective features towards energy conversion systems.
KW - Defective-porosity
KW - Grain-like nanoparticles
KW - Oxidation/reduction
KW - Tuneable electronic structure
KW - Zr–MnSe
UR - https://www.scopus.com/pages/publications/105005598240
U2 - 10.1016/j.ijhydene.2025.05.211
DO - 10.1016/j.ijhydene.2025.05.211
M3 - Article
AN - SCOPUS:105005598240
SN - 0360-3199
VL - 139
SP - 36
EP - 46
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -