Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis
Material strain and reconstruction effects are critical for catalysis reactions, but current insights into operando strain effects during reaction and means to master catalyst reconstruction are still lacking. Here, we propose a facile thermal-induced phase-segregation strategy to simultaneously mas...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
2023
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| Online Access: | http://purl.org/au-research/grants/arc/DP160104835 http://hdl.handle.net/20.500.11937/96650 |
| _version_ | 1848766189126287360 |
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| author | Guan, D. Shi, C. Xu, Hengyue Gu, Y. Zhong, J. Sha, Y. Hu, Z. Ni, M. Shao, Zongping |
| author_facet | Guan, D. Shi, C. Xu, Hengyue Gu, Y. Zhong, J. Sha, Y. Hu, Z. Ni, M. Shao, Zongping |
| author_sort | Guan, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Material strain and reconstruction effects are critical for catalysis reactions, but current insights into operando strain effects during reaction and means to master catalyst reconstruction are still lacking. Here, we propose a facile thermal-induced phase-segregation strategy to simultaneously master material operando strain and reconstruction effects for enhanced oxygen-evolving reaction (OER). Specifically, self-assembled and controllable layered LiCoO2 phase and Co3O4 spinel can be generated from pristine Li2Co2O4 spinel via Li and O volatilization under different temperatures, realizing controllable proportions of two phases by calcination temperature. Combined operando and ex-situ characterizations reveal that obvious tensile strain along (003) plane appears on layered LixCoO2 phase during OER, while low-valence Co3O4 phase transforms into high-valence CoOOHx, realizing simultaneous operando strain and reconstruction effects. Further experimental and computational investigations demonstrate that both strained LixCoO2 phase and reconstructed CoOOHx compound contribute to the beneficial adsorption of important OH− reactants, while respective roles in activity and stability are uncovered by exploring their lattice-oxygen participation mechanism. This work not only reveals material operando strain effects during OER, but also inaugurates a new thermal-induced phase-segregation strategy to artificially master material operando strain and reconstruction effects, which will enlighten rational material design for many potential reactions and applications. |
| first_indexed | 2025-11-14T11:47:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-96650 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:47:11Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-966502025-01-27T02:05:02Z Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis Guan, D. Shi, C. Xu, Hengyue Gu, Y. Zhong, J. Sha, Y. Hu, Z. Ni, M. Shao, Zongping Material strain and reconstruction effects are critical for catalysis reactions, but current insights into operando strain effects during reaction and means to master catalyst reconstruction are still lacking. Here, we propose a facile thermal-induced phase-segregation strategy to simultaneously master material operando strain and reconstruction effects for enhanced oxygen-evolving reaction (OER). Specifically, self-assembled and controllable layered LiCoO2 phase and Co3O4 spinel can be generated from pristine Li2Co2O4 spinel via Li and O volatilization under different temperatures, realizing controllable proportions of two phases by calcination temperature. Combined operando and ex-situ characterizations reveal that obvious tensile strain along (003) plane appears on layered LixCoO2 phase during OER, while low-valence Co3O4 phase transforms into high-valence CoOOHx, realizing simultaneous operando strain and reconstruction effects. Further experimental and computational investigations demonstrate that both strained LixCoO2 phase and reconstructed CoOOHx compound contribute to the beneficial adsorption of important OH− reactants, while respective roles in activity and stability are uncovered by exploring their lattice-oxygen participation mechanism. This work not only reveals material operando strain effects during OER, but also inaugurates a new thermal-induced phase-segregation strategy to artificially master material operando strain and reconstruction effects, which will enlighten rational material design for many potential reactions and applications. 2023 Journal Article http://hdl.handle.net/20.500.11937/96650 10.1016/j.jechem.2023.03.033 http://purl.org/au-research/grants/arc/DP160104835 restricted |
| spellingShingle | Guan, D. Shi, C. Xu, Hengyue Gu, Y. Zhong, J. Sha, Y. Hu, Z. Ni, M. Shao, Zongping Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title | Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title_full | Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title_fullStr | Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title_full_unstemmed | Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title_short | Simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| title_sort | simultaneously mastering operando strain and reconstruction effects via phase-segregation strategy for enhanced oxygen-evolving electrocatalysis |
| url | http://purl.org/au-research/grants/arc/DP160104835 http://hdl.handle.net/20.500.11937/96650 |