Exploration of Ca0.5Ti2(PO4)3@carbon Nanocomposite as the High-Rate Negative Electrode for Na-Ion Batteries
Source abstract
Abstract
Exploring suitable electrode materials with high specific capacity and high-rate capability is a challenging goal for the development of Na-ion batteries. Here, we report a NASICON-structured compound, Ca 0.5 Ti 2 (PO 4 ) 3, with respect to its synthesis and electrochemical properties. The electrode is found to enable fast Na + ion diffusion owing to the rich crystallographic vacancies, affording a reversible capacity of 264 mA h g –1 between 3.0 and 0.01 V. In particular, the hybrid Ca 0.5 Ti 2 (PO 4 ) 3 @carbon exhibits remarkable rate performance with a discharge capacity of nearly 45 mA h g –1 at a current density of 20 A g –1, which is attributed to the pseudocapacitive effect.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, People’s Republic of China
State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, People’s Republic of China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Jilin Province · Graduate Innovation Fund, Jilin University
References (32)
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