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Layered Iron Vanadate as a High-Capacity Cathode Material for Nonaqueous Calcium-Ion Batteries
| Content Provider | MDPI |
|---|---|
| Author | Chae, Munseok Setiawan, Dedy Kim, Hyojeong Hong, Seung-Tae |
| Copyright Year | 2021 |
| Description | Calcium-ion batteries represent a promising alternative to the current lithium-ion batteries. Nevertheless, calcium-ion intercalating materials in nonaqueous electrolytes are scarce, probably due to the difficulties in finding suitable host materials. Considering that research into calcium-ion batteries is in its infancy, discovering and characterizing new host materials would be critical to further development. Here, we demonstrate $FeV_{3}O_{9}∙1.2H_{2}$O as a high-performance calcium-ion battery cathode material that delivers a reversible discharge capacity of 303 mAh $g^{−1}$ with a good cycling stability and an average discharge voltage of ~2.6 V (vs. $Ca/Ca^{2+}$). The material was synthesized via a facile co-precipitation method. Its reversible capacity is the highest among calcium-ion battery materials, and it is the first example of a material with a capacity much larger than that of conventional lithium-ion battery cathode materials. Bulk intercalation of calcium into the host lattice contributed predominantly to the total capacity at a lower rate, but became comparable to that due to surface adsorption at a higher rate. This stimulating discovery will lead to the development of new strategies for obtaining high energy density calcium-ion batteries. |
| Starting Page | 54 |
| e-ISSN | 23130105 |
| DOI | 10.3390/batteries7030054 |
| Journal | Batteries |
| Issue Number | 3 |
| Volume Number | 7 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-09 |
| Access Restriction | Open |
| Subject Keyword | Batteries Calcium-ion Battery Cathode Material Kazakhstanite Post-lithium-ion Battery Layered Iron Vanadate |
| Content Type | Text |
| Resource Type | Article |
