An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting

Natarajan Logeshwaran; Shanmugam Ramakrishnan; Selvaraj Selva Chandrasekaran; Mohanraj Vinothkannan; Ae Rhan Kim; Sivaprakash Sengodan; Dhinesh Babu Velusamy; Purushothaman Varadhan; Jr-Hau He; Dong Jin Yoo

doi:10.1016/j.apcatb.2021.120405

An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting

Natarajan Logeshwaran, Shanmugam Ramakrishnan, Selvaraj Selva Chandrasekaran, Mohanraj Vinothkannan, Ae Rhan Kim, Sivaprakash Sengodan, Dhinesh Babu Velusamy, Purushothaman Varadhan, Jr-Hau He, Dong Jin Yoo^*

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

157 Citations (Scopus)

Abstract

Constructing more active and durable trifunctional electrocatalysts is key for boosting overall water splitting and metal–air battery efficiency. Herein, we developed a trifunctional electrocatalyst of ultrafine Pt nanoparticles anchored on CoS₂-N-doped reduced graphene oxide (Pt@CoS₂-NrGO). Owing to its more Pt active sites with rapid ion/electron transport ability, the Pt@CoS₂-NrGO shows excellent trifunctional activities towards HER (η₁₀ = 39 mV), OER (η₁₀ = 235 mV) ORR (E_1/2 = 0.85 V vs. RHE) and water splitting device of Pt@CoS₂-NrGO||Pt@CoS₂-NrGO achieved cell voltage of 1.48 V at 10 mA cm⁻², which is better than Pt-C||RuO₂. Finally, we employed Pt@CoS₂-NrGO as air cathode for zinc–air battery to display a power density of 114 mW cm^-2 and durability of 55 h, outperforming than Pt-C + RuO₂ based zinc–air batteries. For practical aspects, Pt@CoS₂-NrGO based zinc–air batteries were connected to overall water splitting device to produce H₂ and O₂ gases for hydrogen fuel cell.

Original language	English
Article number	120405
Journal	Applied Catalysis B: Environmental
Volume	297
Online published	1 Jun 2021
DOIs	https://doi.org/10.1016/j.apcatb.2021.120405
Publication status	Published - 15 Nov 2021

Research Keywords

Density functional theory
Overall water splitting
Pt@CoS2-NrGO
Trifunctional electrocatalyst
Zinc–air battery

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Logeshwaran, N., Ramakrishnan, S., Chandrasekaran, S. S., Vinothkannan, M., Kim, A. R., Sengodan, S., Velusamy, D. B., Varadhan, P., He, J.-H., & Yoo, D. J. (2021). An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting. Applied Catalysis B: Environmental, 297, Article 120405. https://doi.org/10.1016/j.apcatb.2021.120405

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title = "An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting",

abstract = "Constructing more active and durable trifunctional electrocatalysts is key for boosting overall water splitting and metal–air battery efficiency. Herein, we developed a trifunctional electrocatalyst of ultrafine Pt nanoparticles anchored on CoS2-N-doped reduced graphene oxide (Pt@CoS2-NrGO). Owing to its more Pt active sites with rapid ion/electron transport ability, the Pt@CoS2-NrGO shows excellent trifunctional activities towards HER (η10 = 39 mV), OER (η10 = 235 mV) ORR (E1/2 = 0.85 V vs. RHE) and water splitting device of Pt@CoS2-NrGO||Pt@CoS2-NrGO achieved cell voltage of 1.48 V at 10 mA cm−2, which is better than Pt-C||RuO2. Finally, we employed Pt@CoS2-NrGO as air cathode for zinc–air battery to display a power density of 114 mW cm-2 and durability of 55 h, outperforming than Pt-C + RuO2 based zinc–air batteries. For practical aspects, Pt@CoS2-NrGO based zinc–air batteries were connected to overall water splitting device to produce H2 and O2 gases for hydrogen fuel cell.",

keywords = "Density functional theory, Overall water splitting, Pt@CoS2-NrGO, Trifunctional electrocatalyst, Zinc–air battery",

author = "Natarajan Logeshwaran and Shanmugam Ramakrishnan and Chandrasekaran, {Selvaraj Selva} and Mohanraj Vinothkannan and Kim, {Ae Rhan} and Sivaprakash Sengodan and Velusamy, {Dhinesh Babu} and Purushothaman Varadhan and Jr-Hau He and Yoo, {Dong Jin}",

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An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting. / Logeshwaran, Natarajan; Ramakrishnan, Shanmugam; Chandrasekaran, Selvaraj Selva et al.
In: Applied Catalysis B: Environmental, Vol. 297, 120405, 15.11.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting

AU - Logeshwaran, Natarajan

AU - Ramakrishnan, Shanmugam

AU - Chandrasekaran, Selvaraj Selva

AU - Vinothkannan, Mohanraj

AU - Kim, Ae Rhan

AU - Sengodan, Sivaprakash

AU - Velusamy, Dhinesh Babu

AU - Varadhan, Purushothaman

AU - He, Jr-Hau

AU - Yoo, Dong Jin

PY - 2021/11/15

Y1 - 2021/11/15

N2 - Constructing more active and durable trifunctional electrocatalysts is key for boosting overall water splitting and metal–air battery efficiency. Herein, we developed a trifunctional electrocatalyst of ultrafine Pt nanoparticles anchored on CoS2-N-doped reduced graphene oxide (Pt@CoS2-NrGO). Owing to its more Pt active sites with rapid ion/electron transport ability, the Pt@CoS2-NrGO shows excellent trifunctional activities towards HER (η10 = 39 mV), OER (η10 = 235 mV) ORR (E1/2 = 0.85 V vs. RHE) and water splitting device of Pt@CoS2-NrGO||Pt@CoS2-NrGO achieved cell voltage of 1.48 V at 10 mA cm−2, which is better than Pt-C||RuO2. Finally, we employed Pt@CoS2-NrGO as air cathode for zinc–air battery to display a power density of 114 mW cm-2 and durability of 55 h, outperforming than Pt-C + RuO2 based zinc–air batteries. For practical aspects, Pt@CoS2-NrGO based zinc–air batteries were connected to overall water splitting device to produce H2 and O2 gases for hydrogen fuel cell.

AB - Constructing more active and durable trifunctional electrocatalysts is key for boosting overall water splitting and metal–air battery efficiency. Herein, we developed a trifunctional electrocatalyst of ultrafine Pt nanoparticles anchored on CoS2-N-doped reduced graphene oxide (Pt@CoS2-NrGO). Owing to its more Pt active sites with rapid ion/electron transport ability, the Pt@CoS2-NrGO shows excellent trifunctional activities towards HER (η10 = 39 mV), OER (η10 = 235 mV) ORR (E1/2 = 0.85 V vs. RHE) and water splitting device of Pt@CoS2-NrGO||Pt@CoS2-NrGO achieved cell voltage of 1.48 V at 10 mA cm−2, which is better than Pt-C||RuO2. Finally, we employed Pt@CoS2-NrGO as air cathode for zinc–air battery to display a power density of 114 mW cm-2 and durability of 55 h, outperforming than Pt-C + RuO2 based zinc–air batteries. For practical aspects, Pt@CoS2-NrGO based zinc–air batteries were connected to overall water splitting device to produce H2 and O2 gases for hydrogen fuel cell.

KW - Density functional theory

KW - Overall water splitting

KW - Pt@CoS2-NrGO

KW - Trifunctional electrocatalyst

KW - Zinc–air battery

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U2 - 10.1016/j.apcatb.2021.120405

DO - 10.1016/j.apcatb.2021.120405

M3 - RGC 21 - Publication in refereed journal

SN - 0926-3373

VL - 297

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 120405

ER -

An efficient and durable trifunctional electrocatalyst for zinc–air batteries driven overall water splitting

Abstract

Research Keywords

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