Coaxial spinning fabricated high nitrogen-doped porous carbon walnut anchored on carbon fibers as anodic material with boosted lithium storage performance

Interpenetrated N-rich MOF derived vesicular N-doped carbon for high performance lithium ion battery

“…Such increased capacity during the cycle test has been reported in many porous N-doped carbon materials. 57–63 A gradual and lagging activation process for the electrode was suggested to explain this behavior. That is, numerous defects of N-doped carbon are constantly generated during the charge/discharge process which provide more Li + storage active locations until the material becomes stable.…”

“…That is, numerous defects of N-doped carbon are constantly generated during the charge/discharge process which provide more Li + storage active locations until the material becomes stable. [57][58][59][60][61][62][63] The good cycle stability might be attributed to the formation a stable SEI film and effective lithium ion transport channels. The rate performance of the as-formed N/C-900 was also studied (Fig.…”

“…It can be seen that the N/C-900 material displays a median N content, good lithium storage capacity and excellent long-life stabilities compared to most reported N/C materials under a high current density. [57][58][59][60][61][62][63] To the best of our knowledge of the survey, there are few reports about the remarkable 2000 cycle life for LIB anode materials to date. So N/C-900 is a competitive LIB anode material which integrates high reversible capacity, excellent rate capability and ultralong cycle stability.…”

Electrospun Nanofiber Electrodes for Lithium‐Ion Batteries

“…[67] Tong et al used the difference in viscosity of the precursor solution to make one part of the liquid jet shrink to spheres, and the other solidifies to fibers, thus successfully developed Ndoped porous walnuts anchored on CNFs through coaxial electrospinning (Figure 5h). [68] The larger surface area of porous NFs provided enough electrode/electrolyte interface for absorbing Li ions, while the micro-mesoporous ensured the rapid transport of ions and acted as a "reservoir" for storing Li ions; Moreover, higher heteroatom doping levels in carbon matrix can improve its electrochemical reactivity and electron conductivity, thereby increasing lithium storage capacity.…”

“…h) Synthetic scheme of N-doped porous walnut anchored on carbon fibers. Reproduced with permission [68]. Copyright 2020, Elsevier.…”