Zinc-assisted synthesis of polymer framework-based atomically dispersed bimetal catalysts for efficient oxygen electrocatalysis in rechargeable zinc-air batteries

Kumar, Yogesh; Akula, Srinu; Kozlova, Jekaterina; Kikas, Arvo; Aruväli, Jaan; Käärik, Maike; Treshchalov, Alexey; Leis, Jaan; Kisand, Vambola; Kukli, Kaupo; Kibena-Põldsepp, Elo; Tammeveski, Kaido

doi:10.1016/j.est.2024.111164

Cited by 7 publications

(1 citation statement)

References 63 publications

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“…One possible application for such non-precious metal electrocatalysts is zinc–air batteries (ZABs), where they can be used as noble metal alternatives on air electrodes for catalyzing the ORR . Good ZAB performance has been achieved with transition metal-containing nitrogen-doped carbon-based cathode materials, even outperforming noble metal-based electrocatalysts tested under the same conditions. , By using biomass as a carbon precursor and modifying it with nitrogen (or other heteroatoms), very promising metal-free materials have also been developed for ZAB application . The work carried out herein represents a substantial advancement in fostering a circular economy and a more sustainable global paradigm, aligning with the objectives espoused by governmental entities worldwide.…”

Section: Introductionmentioning

confidence: 99%

Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction

Kaare,

Volperts,

Plavniece

et al. 2024

ACS Sustainable Resour. Manage.

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Black liquor is hazardous and one of the main byproducts in the pulp and paper industry. Its primary constituent is lignin, a carbonbased molecule serving as a precursor for the synthesis of nanostructured carbon materials. Herein, we have used black liquor as a precursor to synthesize high surface area carbons for use as electrochemical oxygen reduction reaction (ORR) catalysts. The materials were activated by a NaOH treatment and subsequently nitrogen-doped by mixing with dicyandiamide, followed by pyrolysis. Synthesis resulted in catalyst materials that showed high specific surface area (1807 and 1228 m 2 g −1 , respectively), high surface nitrogen content (6.7 and 5.1 at. %, respectively), and the inclusion of chromium and sulfur impurities that originated from the black liquor. The black liquor-based catalyst exhibited high ORR activity in alkaline media with a half-wave potential (E 1/2 ) of 780 mV and an onset potential (E onset ) of 900 mV versus RHE. The resultant Zn−air battery delivered a high peak power density of 112 mW cm −2 at 171 mA cm −2 and a specific capacity of 633 mAh g −1 .

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Section: Introductionmentioning

confidence: 99%

Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction

Kaare,

Volperts,

Plavniece

et al. 2024

ACS Sustainable Resour. Manage.

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A Review on Recent Developments in Transition Metal and Heteroatom‐Doped Carbon Catalysts for Oxygen Reduction Reaction

Jannath,

Saputra

2024

Electrochemical Science Adv

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Oxygen reduction reaction (ORR) is key in many green energy conversion devices like fuel cells and metal‐air batteries. Developing cheap and robust electrocatalysts is crucial to expedite the slow ORR kinetics at the cathode. Lately, transition metal (TM) and heteroatom‐doped carbon catalysts have surfaced as promising cathode materials for ORR as they display admirable electrocatalytic activity and distinguished properties like tunable morphology, structure, composition and porosity. This review summarizes the recent breakthrough in TM (Fe, Co, Mn and Ni) and heteroatoms (N, S, B, P and F) doping in carbon materials. Moreover, their ORR activity and active sites are inspected for future augmentation in making ORR catalysts for electrochemical devices. The existing challenges and prospects in this field are ratiocinated in conclusion.

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Bifunctional oxygen electrocatalyst based on Fe, Co, and nitrogen co-doped graphene-coated alumina nanofibers for Zn-air battery air electrode

Mooste,

Ahmed,

Kapitulskis

et al. 2024

Applied Surface Science

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Zinc-assisted synthesis of polymer framework-based atomically dispersed bimetal catalysts for efficient oxygen electrocatalysis in rechargeable zinc-air batteries

Cited by 7 publications

References 63 publications

Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction

Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction

A Review on Recent Developments in Transition Metal and Heteroatom‐Doped Carbon Catalysts for Oxygen Reduction Reaction

Bifunctional oxygen electrocatalyst based on Fe, Co, and nitrogen co-doped graphene-coated alumina nanofibers for Zn-air battery air electrode

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