| Title: |
Cathode wrapping strategy with metal chalcogenide nanosheet for safer and longer lasting Li-ion batteries |
| Authors: |
Suji Kim, Jihyun Kim, Joohoon Kang, Won-Hee Ryu |
| Source: |
npj 2D Materials and Applications, Vol 9, Iss 1, Pp 1-11 (2025) |
| Publisher Information: |
Nature Portfolio, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Materials of engineering and construction. Mechanics of materials
LCC:Chemistry |
| Subject Terms: |
Materials of engineering and construction. Mechanics of materials, TA401-492, Chemistry, QD1-999 |
| More Details: |
Abstract Ni-rich layered cathode materials have been intensively explored to maximize the energy density of lithium-ion batteries (LIBs). However, their performance is compromised by unstable surface reactions in the high-voltage region, resulting in detrimental changes to the surface structure. In this study, an effective strategy to improve the long-term stability of LIBs is demonstrated. This strategy involves conformally wrapping two-dimensional (2D) molybdenum disulfide (MoS2) nanosheets on Ni-rich layered cathodes via electrostatic interactions between positively surface-treated MoS2 and negatively charged cathode particles. The formation of MoS2 wrapping layers prevents direct interfacial contact between the cathode and the electrolyte, thereby preventing surface-triggered structural degradation and unwanted side reactions. The improved cell stability was verified, with advantages including reduced gas evolution, facile Li-ion transfer, and mitigated microcrack propagation. This 2D material-wrapping strategy allows for thin and effective coverage of the cathode surface, consequently ensuring improved safety and longer lifespans for LIBs. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2397-7132 |
| Relation: |
https://doaj.org/toc/2397-7132 |
| DOI: |
10.1038/s41699-025-00539-3 |
| Access URL: |
https://doaj.org/article/8ecb78d70bdb480cb948ac719e063008 |
| Accession Number: |
edsdoj.8ecb78d70bdb480cb948ac719e063008 |
| Database: |
Directory of Open Access Journals |
