Controlling Surface Phase Transition and Chemical Reactivity of O3-Layered Metal Oxide Cathodes for High-Performance Na-Ion Batteries
Journal Article
·
· ACS Energy Letters
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Washington State Univ., Pullman, WA (United States)
- Beijing Univ. of Technology (China)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Washington State Univ., Pullman, WA (United States)
O3-layered metal oxides are promising cathode materials for high-energy Na-ion batteries (SIBs); however, they suffer from fast capacity fade. In this work, we develop a high-performance O3-NaNi0.68Mn0.22Co0.10O2 cathode for SIBs toward practical applications by suppressing the formation of a rock salt layer at the cathode surface with an advanced electrolyte. The cathode can deliver a high specific capacity of ~196 mAh g–1 and demonstrates >80% capacity retention over 1000 cycles. NaNi0.68Mn0.22Co0.10O2–hard carbon full-cells with practical loading (>2.5 mAh cm–2) and lean electrolyte (~40 μL) demonstrate ~82% capacity retention after 450 cycles. A 60 mAh single-layer pouch cell has also been fabricated and demonstrated stable performance. This work represents a significant leap in SIB development and brings new insights to the development of advanced layered metal oxide cathodes for alkaline-ion batteries.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); USDOE Office of Electricity (OE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC02-05CH11231; AC05-76RL01830; SC0012704
- OSTI ID:
- 1644016
- Alternate ID(s):
- OSTI ID: 1647034
- Report Number(s):
- BNL--216188-2020-JAAM; PNNL-SA--141318
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 6 Vol. 5; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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