Design of nanoconfined MWNTs@NaTi2(PO4)3 coaxial cables with superior rate capability and long-cycle life for Na-ion batteries
Source abstract
Abstract
NASCION-type NaTi2(PO4)3 (denoted as NTP) has been established well as a promising anode material for Na-ion batteries (NIBs) in view of striking structure advantages. Unfortunately, the excellent rate capability of NTP is seriously limited by its intrinsic modest electrical conductivity. In this work, an efficient solvothermal strategy combined with following calcination is purposefully developed to synthesize morphology-controlled one-dimensional (1D) coaxial nanocables consisting of highly conducting multi-walled carbon nanotubes (MWNTs) cores and well-crystalline NTP sheath (afterwards designed as MWNTs@NTP). When evaluated as an anode for non-aqueous NIBs, the unique MWNTs@NTP coaxial nanocables exhibit excellent Na-storage performance with high charge–discharge capacities, rate performance and long cycle life, much better than those for MWNTs/NTP mixture, originating from the optimum design and synergetic effect of rapid electron delivery, convenient Na+ transport and large electrode/electrolyte contacting sur-/interfaces provided by the three-dimensional entangling coaxial nanonetworks.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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