期刊
NANO LETTERS
卷 16, 期 5, 页码 3329-3334出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b00954
关键词
Energy storage; sodium-ion battery; nanostructure; sodium rhodizonate; sustainable materials
类别
资金
- National Science Foundation [NSF-CMMI-1537894]
- 3M Nontenured Faculty Award
- Chinese National Key Fundamental Research Project [2013CB932900]
- National Natural Science Foundation of China [61229401, 61076017, 60990314]
- PAPD program
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1537894] Funding Source: National Science Foundation
Organic electroactive materials represent a new generation of sustainable energy storage technology due to their unique features including environmental benignity, material sustainability, and highly tailorable properties. Here a carbonyl-based organic salt Na2C6O6, sodium rhodizonate (SR) dibasic, is systematically investigated for high-performance sodium-ion batteries. A combination of structural control, electrochemical analysis, and computational simulation show that rational morphological control can lead to significantly improved sodium storage performance. A facile antisolvent method was developed to synthesize microbulk, microrod, and nanorod structured SRs, which exhibit strong size-dependent sodium ion storage properties. The SR nanorod exhibited the best performance to deliver a reversible capacity of similar to 190 mA h g(-1) at 0.1 C with over 90% retention after 100 cycles. At a high rate of 10 C, 50% of the capacity can be obtained due to enhanced reaction kinetics, and such high electrochemical activity maintains even at 80 degrees C. These results demonstrate a generic design route toward high-performance organic-based electrode materials for beyond Li-ion batteries. Using such a biomass-derived organic electrode material enables access to sustainable energy storage devices with low cost, high electrochemical performance and thermal stability.
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