Simultaneously Modulating Li+ Transport Kinetics and Structural Stability in Li‐Rich Mn‐Based All‐Solid‐State Electrodes by Dual‐Scale Particle Engineering
Fuente:
Wiley Open Access
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Artículo Open Access |
| Veröffentlicht: |
Wiley
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1867004581979881472 |
|---|---|
| author | Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu |
| author_facet | Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu |
| collection | Wiley Open Access |
| contents | Simultaneously Modulating Li+ Transport Kinetics and Structural Stability in Li‐Rich Mn‐Based All‐Solid‐State Electrodes by Dual‐Scale Particle Engineering Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu ChemSusChem Li‐rich Mn‐based oxides (LRMOs) are promising cathodes for all‐solid‐state lithium batteries (ASSLBs) due to their high theoretical capacity. However, their practical application is hindered by sluggish Li+ transport and interfacial instability. Herein, it is demonstrated that primary and secondary particle sizes of LRMOs play crucial roles in influencing Li+ transport kinetics and interfacial stability. With a fixed primary particle size (0.1 μm), large secondary particles (≈10 μm) impede Li+ transport by creating tortuous transport paths and inducing stress‐induced cracks. Reducing the secondary particle size enhances Li+ transport kinetics; however, excessively small secondary particles (≈1 μm) lead to poor point‐contact geometry at the LRMO/solid‐state electrolyte (SSE) interface and increased oxygen release, triggering phase transformation and SSE oxidation, which further obstructs Li+ transport. An optimal secondary particle size of ≈5 μm provides a balance between Li+ transport efficiency and interfacial structural integrity. Furthermore, increasing the primary particle size to ≈0.46 μm reduces grain boundary resistance, enhancing Li+ transport and minimizing side reactions. This dual‐scale optimization results in a high capacity of 200.2 mAh g−1 at 0.05 C and excellent cycling stability with 67.4% capacity retention after 500 cycles at 0.3 C, highlighting the importance of dual‐scale particle engineering for LRMO‐based ASSLBs. 10.1002/cssc.202500619 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/cssc.202500619 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cssc_202500619 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Simultaneously Modulating Li+ Transport Kinetics and Structural Stability in Li‐Rich Mn‐Based All‐Solid‐State Electrodes by Dual‐Scale Particle Engineering Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu ChemSusChem Simultaneously Modulating Li+ Transport Kinetics and Structural Stability in Li‐Rich Mn‐Based All‐Solid‐State Electrodes by Dual‐Scale Particle Engineering Shuang Peng Haonan Zheng Kaiqi Bu Weiyou Yang Chaoyi Chen Changhong Wang Ruizhi Yu ChemSusChem Li‐rich Mn‐based oxides (LRMOs) are promising cathodes for all‐solid‐state lithium batteries (ASSLBs) due to their high theoretical capacity. However, their practical application is hindered by sluggish Li+ transport and interfacial instability. Herein, it is demonstrated that primary and secondary particle sizes of LRMOs play crucial roles in influencing Li+ transport kinetics and interfacial stability. With a fixed primary particle size (0.1 μm), large secondary particles (≈10 μm) impede Li+ transport by creating tortuous transport paths and inducing stress‐induced cracks. Reducing the secondary particle size enhances Li+ transport kinetics; however, excessively small secondary particles (≈1 μm) lead to poor point‐contact geometry at the LRMO/solid‐state electrolyte (SSE) interface and increased oxygen release, triggering phase transformation and SSE oxidation, which further obstructs Li+ transport. An optimal secondary particle size of ≈5 μm provides a balance between Li+ transport efficiency and interfacial structural integrity. Furthermore, increasing the primary particle size to ≈0.46 μm reduces grain boundary resistance, enhancing Li+ transport and minimizing side reactions. This dual‐scale optimization results in a high capacity of 200.2 mAh g−1 at 0.05 C and excellent cycling stability with 67.4% capacity retention after 500 cycles at 0.3 C, highlighting the importance of dual‐scale particle engineering for LRMO‐based ASSLBs. 10.1002/cssc.202500619 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Simultaneously Modulating Li+ Transport Kinetics and Structural Stability in Li‐Rich Mn‐Based All‐Solid‐State Electrodes by Dual‐Scale Particle Engineering |
| topic | ChemSusChem |
| url | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.202500619 |