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

Computer, Electrical and Mathematical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

149 Scopus citations

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 (ƞ10 = 39 mV), OER (ƞ10 = 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.

Original language	English (US)
Pages (from-to)	120405
Journal	Applied Catalysis B: Environmental
Volume	297
DOIs	https://doi.org/10.1016/j.apcatb.2021.120405
State	Published - Jun 1 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-06-16
Acknowledgements: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2020R1A2B5B01001458). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20184030202210).

ASJC Scopus subject areas

General Environmental Science
Catalysis
Process Chemistry and Technology

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10.1016/j.apcatb.2021.120405

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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, 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 (ƞ10 = 39 mV), OER (ƞ10 = 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.",

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 He, {Jr Hau} and Yoo, {Dong Jin}",

note = "KAUST Repository Item: Exported on 2021-06-16 Acknowledgements: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2020R1A2B5B01001458). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20184030202210).",

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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

N1 - KAUST Repository Item: Exported on 2021-06-16 Acknowledgements: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2020R1A2B5B01001458). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20184030202210).

PY - 2021/6/1

Y1 - 2021/6/1

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 (ƞ10 = 39 mV), OER (ƞ10 = 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 (ƞ10 = 39 mV), OER (ƞ10 = 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.

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U2 - 10.1016/j.apcatb.2021.120405

DO - 10.1016/j.apcatb.2021.120405

M3 - Article

SN - 0926-3373

VL - 297

SP - 120405

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

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

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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