Abstract
Room-temperature sodium-ion batteries (SIBs) have attracted extensive interest in large-scale energy storage applications for renewable energy and smart grid, owing to abundant sodium resources and low cost. O3-layered sodium transition metal oxides (i.e., NaMO2, M = Ti, V, Cr, Mn, Fe, Co, Ni, Cu, etc.) are considered as a promising class of cathode materials for SIBs due to their high capacity and ease of synthesis. In this work, a quaternary layered material O3–NaCr1/4Fe1/4Ni1/4Ti1/4O2 (O3-NCFNT) is successfully synthesized and investigated as a new cathode material for SIBs. Within the voltage range of 1.5–4.1 V, O3-NCFNT delivers an ultrahigh charge capacity of 213 mA h g−1 but a limited discharge capacity of 107 mA h g−1 in the initial cycle. Ex situ X-ray diffraction and X-ray absorption spectroscopy results reveal that an irreversible phase transformation as well as the irreversible redox of Cr3+/Cr6+ within the voltage range of 1.5–4.1 V should be responsible for the capacity decay in the initial cycle. While, O3-NCFNT exhibits the initial charge/discharge capacities of 135.4 and 129.2 mA h g−1 with a high coulombic efficiency of 95.4% as well as good cyclic performance within the voltage range of 1.5–3.4 V at current rate of 0.1C. Especially, O3-NCFNT shows a capacity retention of 77.1% after 300 cycles at a high rate of 1C, indicating that the structural origins of capacity decay caused by excessive sodium extraction are confirmed by XRD and XAS measurements to unlock the potential of this material for sodium-ion battery application.
| Original language | English |
|---|---|
| Pages (from-to) | 417-425 |
| Number of pages | 9 |
| Journal | Energy Storage Materials |
| Volume | 24 |
| DOIs | |
| Publication status | Published - 2020 Jan |
Bibliographical note
Funding Information:This work was financially supported by the NSAF (Grant No. 21773037 ), the National Key Scientific Research Project (Grant No. 2016YFB090150 ), 1000 Youth Talents Plan and Science & Technology Commission of Shanghai Municipality ( 08DZ2270500 ). This work done at Brookhaven National Laboratory was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technologies Office of the U.S. DOE through the Advanced Battery Materials Research (BMR) Program, including Battery 500 consortium under Contract DE-SC0012704 . This research used resources at beamline 7-BM(QAS) of the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704 . We would also like to thank beamline BL14W1 of the Shanghai Synchrotron Radiation Facility (SSRF).
Funding Information:
This work was financially supported by the NSAF (Grant No. 21773037), the National Key Scientific Research Project (Grant No. 2016YFB090150), 1000 Youth Talents Plan and Science & Technology Commission of Shanghai Municipality (08DZ2270500). This work done at Brookhaven National Laboratory was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technologies Office of the U.S. DOE through the Advanced Battery Materials Research (BMR) Program, including Battery 500 consortium under Contract DE-SC0012704. This research used resources at beamline 7-BM(QAS) of the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. We would also like to thank beamline BL14W1 of the Shanghai Synchrotron Radiation Facility (SSRF).
Publisher Copyright:
© 2019 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Energy Engineering and Power Technology
