N-doped CoSb@C nanofibers as a self-supporting anode for high-performance K-ion and Na-ion batteries

Han, Jun; Zhu, K.; Liu, Pei; Si, Yuchang; Chai, Yong‐Ming; Jiao, Lifang

doi:10.1039/c9ta09643d

Cited by 52 publications

(27 citation statements)

References 39 publications

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“…The high-resolution Co 2p spectra (Fig. 4a, d) show that the Co 2p 3/2 peak is at 781.4 eV with its accompanying peak located at 786.3 eV, while the Co 2p 1/2 peak locates at 797.1 eV, and its satellite peak is at 803.0 eV, which are close to the literature values [27,28]. The positions and peak shapes of the Co 2p peaks of CoP/NCF and CoSb/NCF are identical, which proves that the Co elements in these two composites have similar +3 valent state and electronic structures.…”

Section: Articles Science China Materialssupporting

confidence: 87%

Anchoring ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers for efficient potassium storage

et al. 2021

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Transition-metal compounds have received extensive attention from researchers due to their high reversible capacity and suitable voltage platform as potassium-ion battery anodes. However, these materials commonly feature a poor conductivity and a large volume expansion, thus leading to underdeveloped rate capability and cyclic stability. Herein, we successfully encapsulated ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers (NCFs) via electrospinning, carbonization, and phosphorization (antimonization). The N-doped carbon fiber prevents the aggregation of nanoparticles, buffers the volume expansion of CoP and CoSb during charging and discharging, and improves the conductivity of the composite material. As a result, the CoP/NCF anode exhibits excellent potassium-ion storage performance, including an outstanding reversible capacity of 335 mA h g −1 , a decent capacity retention of 79.3% after 1000 cycles at 1 A g −1 and a superior rate capability of 148 mA h g −1 at 5 A g −1 , superior to most of the reported transition-metalbased potassium-ion battery anode materials.

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Section: Articles Science China Materialssupporting

confidence: 87%

Anchoring ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers for efficient potassium storage

et al. 2021

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“…As shown in Fig. 11e, Han et al [124] described an N-doped carbon nanofiber matrix with encapsulated CoSb nanoparticles through the electrospinning method. This self-supporting structure with pseudocapacitive behaviors could obtain fast kinetics and high first Coulombic efficiency for SIB anodes.…”

Section: Antimony-based Alloy For Sodium-ion Batteriesmentioning

confidence: 99%

Recent Developments of Antimony-Based Anodes for Sodium- and Potassium-Ion Batteries

Chen

Liang

et al. 2021

Trans. Tianjin Univ.

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The development of sodium-ion (SIBs) and potassium-ion batteries (PIBs) has increased rapidly because of the abundant resources and cost-effectiveness of Na and K. Antimony (Sb) plays an important role in SIBs and PIBs because of its high theoretical capacity, proper working voltage, and low cost. However, Sb-based anodes have the drawbacks of large volume changes and weak charge transfer during the charge and discharge processes, thus leading to poor cycling and rapid capacity decay. To address such drawbacks, many strategies and a variety of Sb-based materials have been developed in recent years. This review systematically introduces the recent research progress of a variety of Sb-based anodes for SIBs and PIBs from the perspective of composition selection, preparation technologies, structural characteristics, and energy storage behaviors. Moreover, corresponding examples are presented to illustrate the advantages or disadvantages of these anodes. Finally, we summarize the challenges of the development of Sb-based materials for Na/K-ion batteries and propose potential research directions for their further development.

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“…While the internal cavity should be contributed to the high dispersion of RP particles and alleviate the volume variation of the discharge product of Na 3 P during the sodiation process, and consequently, such a structure design ensured the structural stability for long‐term cycling. Besides the above‐mentioned basic alloying type anode materials, the bimetal alloys like SnSb [103] and CoSb [104] combined with 3D‐carbon materials were also reported as SIBs anode materials, showing enhanced electrochemical performance.…”

Section: Application Of 3d‐carbon In Sibs Electrode Materialsmentioning

confidence: 99%

3D Carbon Networks: Design and Applications in Sodium Ion Batteries

2021

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As the key component of a new generation for low‐cost energy storage systems, sodium‐ion batteries (SIBs) have attracted enormous attention and research due to its promising potentiality in large‐scale electrochemical energy storage. For practical application of SIBs, carbonaceous materials have been considered to be one of the best choices for electrodes in virtue of their abundant reserves, low cost, easy availability, and environmental friendliness. 3D carbon network (3D‐carbon) is of particular interests, which has displayed outstanding features, including abundant active sites, interconnected multi‐level pore structures, high electronic conductivity, and excellent mechanical stability. Herein, we review the structural advantages of 3D‐carbon and its preparation methods, and then discuss recent progress in 3D carbon materials and their composites for SIBs. The superior functionalities of 3D‐carbon are emphasized as support templates or encapsulation shell membranes. Finally, we summarize and outline the challenges and future prospects of 3D‐carbon in SIBs.

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N-doped CoSb@C nanofibers as a self-supporting anode for high-performance K-ion and Na-ion batteries

Abstract: N-doped CoSb@C nanofibers as self-supporting anode improved K-ion and Na-ion storage.

Cited by 52 publications

References 39 publications

Anchoring ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers for efficient potassium storage

Anchoring ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers for efficient potassium storage

Recent Developments of Antimony-Based Anodes for Sodium- and Potassium-Ion Batteries

3D Carbon Networks: Design and Applications in Sodium Ion Batteries

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