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Ring-shaped all manganese-based lithium-rich oxide cathode with high performance and stability via biomineralization method.
- Source :
-
Applied Surface Science . Jun2024, Vol. 657, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- [Display omitted] • Synthesizing ring-shaped AMLROs active products with biomineralization method. • The mechanism of morphology evolution is investigated to optimize final materials. • Excellent electrochemical performance is achieved without cobalt and nickel. • The ring-shaped structure of AMLRO-54 is well maintained after long term cycling. As free from cobalt and nickel, all manganese-based lithium-rich layered oxides (AMLROs) are promising cathode materials with low cost and high theoretical energy density. This study introduced yeast as a biomineralization template to regulate the crystallization and growth of precursors at the molecular level. The mechanism of structural evolution was investigated in detail, offering a new approach to control the morphology of lithium-rich materials. The resulting AMLRO-54 exhibited a micro-nano composite ring-shaped structure with particle size around 2 μm. The unique hierarchical particles provided large flexible volume, leading to superior structural stability and high rate capability. The reversible capacity of ring-shaped AMLRO-54, without any other modifications, was 274.1 mAh·g−1 at 0.1 C. Once extra carbon material was added to improve the inferior electronic conductivity, the initial capacity of AMLRO-54 at 1 C reached 242.9 mAh·g−1 with a retention rate of 90.9 % after 300 cycles (221.0 mAh·g−1). Furthermore, this cobalt and nickel-free cathode material significantly mitigates material costs and environmental hazards, thereby promoting the development of lithium-ion batteries in the future. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 657
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 176034102
- Full Text :
- https://doi.org/10.1016/j.apsusc.2024.159755