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Three-dimensional porous structured germanium anode materials for high-performance lithium-ion full-cells.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 10/14/2022, Vol. 51 Issue 38, p14767-14774. 8p. - Publication Year :
- 2022
-
Abstract
- Germanium (Ge) has a high specific capacity when used as an alloying anode in lithium-ion batteries. However, a large volume of expansion that occurs during charging and discharging hampers its practical applications. In order to improve the stability of the alloying anode, a three-dimensional (3D) germanium/carbon porous composite was produced. In situ X-ray diffraction and electrochemical dilatometry are used to study the alloying electrode's structural evolution during cycling, revealing that the carbon matrix and the linked porosity structure provide a high reversible lithiation and delithiation, resulting in limited electrode volume expansion and high stability. Moreover, combined with a high nickel content cathode, i.e., LiNi0.8Co0.1Mn0.1O2, the composite achieved a specific energy density of 396 W h kg−1 and stable cycling performance, which show potential for its application in lithium-ion full cells. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 51
- Issue :
- 38
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 159501785
- Full Text :
- https://doi.org/10.1039/d2dt01528e