Selenium-doped carbon nanotubes/nickel selenide coaxial nanocables for energy storage

Jin, Fangzhou; Li, Mingjie; Xie, Lixiang; Jiang, Jinlong

doi:10.1016/j.jpowsour.2021.230587

Cited by 22 publications

(14 citation statements)

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“…Figure 2 [24], while the even distributed Se verify that it has been doped into the carbon nanofibers. Noted that, the doped Se would form stable C-Se covalent bond with carbon nanofibers to promote the capacity and cycling stability [13,[25][26][27]. Moreover, the Energy-dispersive x-ray (EDX) result in table S1 confirms the distribution of C, N, Sn and Se in the SnSe 2 @CNFs, with the mass percent of C, doped Se, and N to be 46.8%, 8.1% and 3.4%, respectively.…”

Section: Resultsmentioning

confidence: 77%

Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Guo,

Chen

et al. 2024

Nanotechnology

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Tin selenides possess layered structure and high theoretical capacity, which is considered as desirable anode material for lithium-ion batteries. However, its further development is limited by the low intrinsic electrical conductivity and sluggish reaction kinetics. Herein, a well-designed structure of SnSe2 nanosheet attached on N, Se co-doped carbon nanofibers (SnSe2@CNFs) is fabricated as self-standing anodes for lithium-ion batteries. The integration of structural engineering and heteroatom doping enables accelerated electrons transfer and rapid ion diffusion for boosting Li+ storage performance. Impressively, the flexible SnSe2@CNFs anodes exhibit inspiring capacity of 837.7 mAh g−1 after 800 cycles at 1.2 C with coulombic efficiency almost 100% and superior rate performance 419.5 mAh g−1 at 2.4 C. The kinetics analysis demonstrates the pseudocapacitive characteristic of SnSe2@CNFs promotes the storage property. This work sheds light on the hierarchical electrode construction towards high-performance energy storage applications.

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Section: Resultsmentioning

confidence: 77%

Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Guo,

Chen

et al. 2024

Nanotechnology

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“…32 Compared with Te-NiCoSe-30, these peaks also shift to lower binding energy, and it is reported that this shift is more conducive to attracting polyselenides, thereby promoting the conversion reaction. 33,34 Based on the XPS results, we have a reason to believe that Te is successfully doped into NiCoSe and results in the redistribution of charge in NiCoSe, and this can finally stabilize the microstructure and improve the following electrochemical performance.…”

Section: Resultsmentioning

confidence: 99%

Te-Doped Nickel Cobalt Selenide (NiCoSe) Nanostructures for Enhanced Sodium Storage

Wang,

Pei

et al. 2023

ACS Appl. Nano Mater.

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Transition metal selenides (TMSs) have been widely believed as promising anode materials for sodium-ion batteries (SIBs). Element doping is a promising but ambiguous strategy to further enhance sodium storage performance due to the complexity of doping conditions and the sensitivity of the selenization process. Herein, tellurium (Te) is selected to fabricate Te-doped nickel cobalt selenide (Te-NiCoSe) using a melting method. Besides the common merit of expanding the interplanar space of NiCoSe, the melted Te can also result in a "size splitting effect" to decrease the particle size of bulk NiCoSe, exposing more surface active sites and accelerating the intercalation/deintercalation reaction kinetics. In addition, the introduction of Te can also inhibit the "reduction effect" of the selenization process induced by high temperature, which results in the charge redistribution of NiCoSe, stabilizing the electronic structure. As a result, the fabricated Te-NiCoSe exhibits a high reversible capacity of 448.7 mA h g −1 at 1 A g −1 , a superior rate capacity of 324.9 mA h g −1 at 30 A g −1 , and an outstanding capacity retention rate of 88.5% after 1000 cycles at 20 A g −1 .

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“…40,41 In addition, the weak peak at around 57.9 eV is ascribed to C-Se-C. The middle peak at 57.3 eV corresponds to the interfacial interaction between FeSe 2 and graphene, 42 indicating the formation of C-Se-Fe bonds between the graphene and FeSe 2 . It is worth noting that the content of the C-Se-Fe covalent bond in FeSe 2 @PG is higher by 5.0% than that in FeSe 2 @PG-4 (Tables S2 and S4, ESI †).…”

Section: Materials Advances Papermentioning

confidence: 99%

Confined oriented growth of FeSe₂ on a porous graphene film as a binder-free anode for high-rate lithium-ion batteries

Zhang¹,

Diao²,

Qiao³

et al. 2023

Mater. Adv.

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Selenium-doped carbon nanotubes/nickel selenide coaxial nanocables for energy storage

Cited by 22 publications

References 50 publications

Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Te-Doped Nickel Cobalt Selenide (NiCoSe) Nanostructures for Enhanced Sodium Storage

Confined oriented growth of FeSe₂ on a porous graphene film as a binder-free anode for high-rate lithium-ion batteries

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Selenium-doped carbon nanotubes/nickel selenide coaxial nanocables for energy storage

Cited by 22 publications

References 50 publications

Effectively coupling of SnSe2 nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Effectively coupling of SnSe2 nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Te-Doped Nickel Cobalt Selenide (NiCoSe) Nanostructures for Enhanced Sodium Storage

Confined oriented growth of FeSe2 on a porous graphene film as a binder-free anode for high-rate lithium-ion batteries

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Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Effectively coupling of SnSe₂ nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries

Confined oriented growth of FeSe₂ on a porous graphene film as a binder-free anode for high-rate lithium-ion batteries