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Superior Oxygen Electrocatalysis on Nickel Indium Thiospinels for Rechargeable Zn–Air Batteries

Fu, Gengtao, Wang, Yu, Tang, Yawen, Zhou, Kun, Goodenough, John B., Lee, Jong-Min·2019·ACS Materials Letters

Abstract

Developing active bifunctional oxygen catalysts to eliminate/reduce the reliance on precious-metal-based ones in metal–air batteries is nowadays of great importance. Here, we report the synthesis of nickel indium thiospinel nanosheets supported on carbon nanofibers (denoted as NiIn 2 S 4 /CNFs) via a facile in situ solvothermal growth process and, for the first time, demonstrate its superior bifunctional oxygen electrocatalytic performances as a precatalyst. Electrocatalytic experiments show that NiIn 2 S 4 /CNFs not only exhibits a positive half-wave potential of 0.81 V for the oxygen reduction reaction (ORR) but also delivers a lower overpotential of 0.39 V for the oxygen evolution reaction (OER) at 10 mA cm –2, outperforming those of monometallic Ni or In sulfides. Theoretical calculations confirm that the (220) and (111) plane in NiIn 2 S 4 are selectively active to the ORR and OER, respectively. Apart from the intrinsic nature of NiIn 2 S 4, the superior OER activity of NiIn 2 S 4 /CNFs is also related to the oxide/hydroxide species in-situ-formed on NiIn 2 S 4 surface under the OER condition. Moreover, the developed NiIn 2 S 4 /CNFs pre-catalyst is demonstrated to be an efficient air-cathode for Zn–air batteries. This work brings a new perspective for designing various ternary thiospinels for energy conversion and storage.

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Metadata

Authors
Fu, G., Wang, Y., Tang, Y., Zhou, K., Goodenough, J. B., & Lee, J.-M.
Venue
ACS Materials Letters
Published
2019-05-29
Volume
1
Issue
1
Pages
123-131
ISSN
2639-4979 (ISSN-L)
OpenAlex
W2947137832
Cited by
224
References
4
FWCI
8.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Superior Oxygen Electrocatalysis on Nickel Indium Thiospinels for Rechargeable Zn–Air Batteries. https://app.cochat.ai/papers/10.1021/acsmaterialslett.9b00093
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Fu, G., Wang, Y., Tang, Y., Zhou, K., Goodenough, J. B., & Lee, J.-M. (2019). Superior Oxygen Electrocatalysis on Nickel Indium Thiospinels for Rechargeable Zn–Air Batteries. ACS Materials Letters. https://doi.org/10.1021/acsmaterialslett.9b00093

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