The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Engineered spin state in Ce doped LaCoO3 with enhanced electrocatalytic activity for rechargeable Zn-Air batteries
Abstract
Abstract Simultaneously engineering the eg electron filling and increasing the intrinsic conductivity is the bottleneck problem in improving the oxygen electrocatalysis of LaCoO3-based electrocatalysts. Herein, we report the highly enhanced oxygen evolution and reduction reaction (OER/ORR) performance in Ce-doped LaCoO3 electrocatalysts: both theoretical and experimental results indicate that the promoted electrocatalytic activity can be ascribed to the spin state of the Co3+ transition from the low-spin state (LS) to the intermediate-spin state (IS) due to the Ce doping, which subsequently results in a synergistic effect between the enlarged Co 3d-O 2p covalency and improved electrical conductivity. As a result, 5.6 at. % Ce-doped LaCoO3 revealed the most outstanding bifunctional OER/ORR electrocatalytic performance, with a low potential difference of approximately 0.96 V. Furthermore, the assembled rechargeable aqueous Zn-air battery (ZnAB) exhibited an ultrahigh energy density of 963 mA kg−1 and excellent durability without significant decay after 160 h. The constructed all-solid-state ZnABs also revealed good discharge rate activity and a flexible nature. This finding provides a novel design strategy for perovskite oxides for a wide range of applications in high-efficiency rechargeable ZnABs.
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Cites
Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis
Hong, W. T., Risch, M., Stoerzinger, K. A., Grimaud, A., Suntivich, J., & Shao-Horn, Y. (2015) · Energy & Environmental Science · doi:10.1039/c4ee03869j · Cited by 2,089
Cited by
Do, V.-H., & Lee, J.-M. (2022) · ACS Nano · doi:10.1021/acsnano.2c08919 · Cited by 292
Spin states of metal centers in electrocatalysis
Zhang, Y., Wu, Q., Seow, J. Z. Y., Jia, Y., Ren, X., & Xu, Z. J. (2024) · Chemical Society Reviews · doi:10.1039/d3cs00913k · Cited by 267
Ramakrishnan, S., Velusamy, D. B., Sengodan, S., Nagaraju, G., Kim, D. H., Kim, A. R., & Yoo, D. J. (2022) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2021.120752 · Cited by 205
Multicomponent transition metal oxides and (oxy)hydroxides for oxygen evolution
Han, J., & Guan, J. (2023) · Nano Research · doi:10.1007/s12274-022-4874-7 · Cited by 145
Metadata
- Authors
- Qian, J., Wang, T., Zhang, Z., Liu, Y., Li, J., & Gao, D.
- Venue
- Nano Energy
- Publisher
- Elsevier BV
- Published
- 2020-08
- Volume
- 74
- Pages
- 104948
- ISSN
- 2211-2855 (ISSN-L)
- OpenAlex
- W3024755958
- Cited by
- 198
- References
- 1
- FWCI
- 4.48
- Type
- journal article
- Language
- en
- Open access
- closed
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- Qian, J., Wang, T., Zhang, Z., Liu, Y., Li, J., & Gao, D. (2020). Engineered spin state in Ce doped LaCoO3 with enhanced electrocatalytic activity for rechargeable Zn-Air batteries. Nano Energy. https://doi.org/10.1016/j.nanoen.2020.104948
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