Superior Sodium Storage of Carbon-Coated NaV6O15 Nanotube Cathode: Pseudocapacitance Versus Intercalation
Source abstract
Abstract
To realize the effect of Na+ pseudocapacitance on the sodium storage of cathode materials, clewlike carbon-coated sodium vanadium bronze (NaV6O15) nanotubes (Na-VBNT@C) were synthesized via a facile combined sol–gel/hydrothermal method. The resultant Na-VBNT@C delivers high reversible capacities of 209 and 105 mA h g–1 at the rates of 0.1 and 10 C, respectively. Notably, at the higher rate of 5 C (1250 mA g–1), it can retain 94% of the initial capacity after 3000 cycles. It was found that the outstanding rate performance and the long-term cycling life of Na-VBNT@C are primarily due to the Na+ pseudocapacitance. Our study reveals that the design of Na+ pseudocapacitance is beneficial for harvesting the superior performance of NaV6O15 cathode material in sodium-ion batteries.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Hunan 411105, P. R. China
Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, P. R. China
Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi’an, Shaanxi 710048, China
College of Metallurgy and Material Engineering, Hunan University of Technology, Hunan 412007, P. R. China
Institute of Fundamental Mechanics and Materials Engineering, Xiangtan University, Hunan 411105, P. R. China
Funding
National Natural Science Foundation of China · Natural Science Foundation of?Hunan Province · Ministry of Science and Technology of the People's Republic of China · Xi'an Science and Technology Project
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