Hierarchical Mn3O4/Graphene Microflowers Fabricated via a Selective Dissolution Strategy for Alkali-Metal-Ion Storage
Tang, C; Xiong, F; Yao, X; Tan, S; Lan, B; An, Q; Luo, P; Mai, L
| HERO ID | 6308245 |
|---|---|
| In Press | No |
| Year | 2019 |
| Title | Hierarchical Mn3O4/Graphene Microflowers Fabricated via a Selective Dissolution Strategy for Alkali-Metal-Ion Storage |
| Authors | Tang, C; Xiong, F; Yao, X; Tan, S; Lan, B; An, Q; Luo, P; Mai, L |
| Journal | ACS Applied Materials & Interfaces |
| Volume | 11 |
| Issue | 15 |
| Page Numbers | 14120-14125 |
| Abstract | Mn3O4 is a potential anode for alkali-metal (Li/Na/K)-ion batteries because of the high capacity, abundant resources, and eco-friendliness. However, its ion storage performance is limited by poor electronic conductivity and large volume expansion during the charging/discharging process. In this study, we presented a facile dissolution strategy to fabricate ultrathin nanosheet-assembled hierarchical Mn3O4/graphene microflowers, realizing enhanced alkali-metal-ion storage performance. The synthetic mechanism was proven as the selective dissolution of vanadium via controlled experiments with different reaction times. The as-synthesized composites showed high lithium storage capacity (about 900 mA h g-1) and superior cyclability (∼400 mA h g-1 after 500 cycles). In addition, when evaluated as a Na-ion battery anode, the reversible capacity of about 200 mA h g-1 was attained, which remained at 167 mA h g-1 after 200 cycles. Moreover, to the best of our knowledge, the potassium storage properties of Mn3O4 were evaluated for the first time and a reversible capacity of about 230 mA h g-1 was achieved. We believe that our findings will be instructive for future investigations of high-capacity anode materials for alkali-metal-ion batteries. |
| Doi | 10.1021/acsami.9b00771 |
| Pmid | 30908002 |
| Wosid | WOS:000465189000032 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |