TY - JOUR
T1 - A SBA-15-templated mesoporous NiFe2O4/MXene nanocomposite for the alkaline hydrogen evolution reaction
AU - Khalil, Munawar
AU - Lesa, Michael
AU - Juandito, Alexander G.
AU - Sanjaya, Afiten R.
AU - Ivandini, Tribidasari A.
AU - Kadja, Grandprix T.M.
AU - Mahyuddin, Muhammad Haris
AU - Sookhakian, Mehran
AU - Alias, Yatimah
N1 - Funding Information:
The authors would like to acknowledge the financial support provided by the Directorate of Research and Development, Universitas Indonesia under Hibah PUTI Q1 2023 (Contract No. NKB-483/UN2.RST/HKP.05.00/2023).
Publisher Copyright:
© 2023 RSC.
PY - 2023/8/2
Y1 - 2023/8/2
N2 - The development of efficient and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is crucial for renewable energy conversion and storage. Here, we report the synthesis of a mesoporous NiFe2O4/MXene nanocomposite for the alkaline HER. The as-prepared nanocomposite demonstrated a synergistic effect in facilitating the HER, as evidenced by significantly improved electrocatalytic activity compared to individual NiFe2O4 and MXene components. The mesoporous structure of the nanocomposite, derived from the SBA-15 template, provided a large surface area and enhanced mass transport, while the incorporation of MXene as a conductive additive improved the charge transfer kinetics. Based on the results, the NiFe2O4/MXene nanocomposite exhibited a low onset overpotential of −440 mV, a small Tafel slope of 187.5 mV per decade, and long-term stability for the HER in alkaline electrolytes, as opposed to the individual NiFe2O4 or MXene. The enhanced electrocatalytic performance was attributed to the synergistic effect of the unique mesoporous structure, high conductivity, and abundant active sites provided by NiFe2O4 and MXene. However, DFT calculations revealed that more favorable H atom adsorption and activation processes were observed on the surface of the NiFe2O4 (400) plane. Our findings highlight the potential of using templated mesoporous nanocomposites for designing efficient electrocatalysts for the alkaline HER and contribute to the advancement of renewable energy technologies.
AB - The development of efficient and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is crucial for renewable energy conversion and storage. Here, we report the synthesis of a mesoporous NiFe2O4/MXene nanocomposite for the alkaline HER. The as-prepared nanocomposite demonstrated a synergistic effect in facilitating the HER, as evidenced by significantly improved electrocatalytic activity compared to individual NiFe2O4 and MXene components. The mesoporous structure of the nanocomposite, derived from the SBA-15 template, provided a large surface area and enhanced mass transport, while the incorporation of MXene as a conductive additive improved the charge transfer kinetics. Based on the results, the NiFe2O4/MXene nanocomposite exhibited a low onset overpotential of −440 mV, a small Tafel slope of 187.5 mV per decade, and long-term stability for the HER in alkaline electrolytes, as opposed to the individual NiFe2O4 or MXene. The enhanced electrocatalytic performance was attributed to the synergistic effect of the unique mesoporous structure, high conductivity, and abundant active sites provided by NiFe2O4 and MXene. However, DFT calculations revealed that more favorable H atom adsorption and activation processes were observed on the surface of the NiFe2O4 (400) plane. Our findings highlight the potential of using templated mesoporous nanocomposites for designing efficient electrocatalysts for the alkaline HER and contribute to the advancement of renewable energy technologies.
UR - http://www.scopus.com/inward/record.url?scp=85169509201&partnerID=8YFLogxK
U2 - 10.1039/d3ma00289f
DO - 10.1039/d3ma00289f
M3 - Article
AN - SCOPUS:85169509201
SN - 2633-5409
VL - 4
SP - 3853
EP - 3862
JO - Materials Advances
JF - Materials Advances
IS - 17
ER -