Nanocrystalline Cellulose Supported MnO
| Autor: | Thuan Ngoc Vo, Ji Hyeon Kim, Il Tae Kim, Dal Ho Lee, Sang Joon Park, Quang Nhat Tran |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science lithium-ion batteries chemistry.chemical_element Manganese Electrochemistry Article chemistry.chemical_compound Electrical resistivity and conductivity General Materials Science Composite material Cellulose Microscopy QC120-168.85 Nanocomposite nanocomposite manganese dioxide QH201-278.5 nanocrystalline cellulose discharge capacity Engineering (General). Civil engineering (General) Nanocrystalline material TK1-9971 Descriptive and experimental mechanics chemistry Electrode Lithium Electrical engineering. Electronics. Nuclear engineering TA1-2040 |
| Zdroj: | Materials Materials; Volume 14; Issue 21; Pages: 6619 Materials, Vol 14, Iss 6619, p 6619 (2021) |
| ISSN: | 1996-1944 |
| Popis: | The rate capability and poor cycling stability of lithium-ion batteries (LIBs) are predominantly caused by the large volume expansion upon cycling and poor electrical conductivity of manganese dioxide (MnO2), which also exhibits the highest theoretical capacity among manganese oxides. In this study, a nanocomposite of nanosized MnO2 and pyrolyzed nanocrystalline cellulose (CNC) was prepared with high electrical conductivity to enhance the electrochemical performance of LIBs. The nanocomposite electrode showed an initial discharge capacity of 1302 mAh g−1 at 100 mA g−1 and exhibited a high discharge capacity of 305 mAh g−1 after 1000 cycles. Moreover, the MnO2-CNC nanocomposite delivered a good rate capability of up to 10 A g−1 and accommodated the large volume change upon repeated cycling tests. |
| Databáze: | OpenAIRE |
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