Co<sub>9</sub>S<sub>8</sub>@carbon nanofiber as the high-performance anode for potassium-ion storage

Wen, Xin; Wei, Zhixuan; Yao, Shiyu; Chen, Nan; Wang, Chunzhong; Chen, Gang; Du, Fei

doi:10.1039/d1ra01069g

Cited by 6 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was surprisingly found that the discharge capacity in 0∼1.5 V at the second cycle was 244.5, and 209.0 mAh g –1 was retained after 1000 cycles (corresponding to 85.5% retention), suggesting that the GeP@NC-2 was very stable during long-term lithiation/delithiation and was very conductive to manufacture of high-voltage full cells. In addition, the discharge capacity of GeP@NC-2 was compared with that for the previously reported similar techniques used to improve rate and cycling performance. ,,,− It should be noted that except for Ref ., where the discharge/discharge voltage range was 0–1 V versus Li + /Li, the discharge/charge voltage range of other references was 0–3 V versus Li + /Li. Obviously, the GeP@NC-2 prepared in this study displayed higher capacity than that of Ref .…”

Section: Results and Discussionmentioning

confidence: 99%

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Zeng

Feng

Liu

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Although graphite has been used as anodes of lithium-ion batteries (LiBs) for 30 years, its unsatisfactory energy density makes it insufficient toward some new electronic products such as unmanned aerial vehicles. Herein, in situ synthesis of nano-GeP confined in nitrogen-doped carbon (GeP@NC) fibers was designed and performed via coaxial electrospinning followed by a phosphating process. This way ensured the paper-like GeP@NC-x electrode with high conductivity, high flexibility, and lightweight properties, which simultaneously solved the key scientific problems of difficulty in structural design and severe volume expansion of GeP. The inner diameter and wall thickness of the nanofibers can be effectively controlled by adjusting the size of electrospinning needles. It was suggested that the fibers not only effectively inhibited the growth of GeP, resulting in the synthesis of nano-GeP with size less than 50 nm, but also alleviated the volume expansion/agglomeration and improved the diffusion kinetics of Li+ in nano-GeP during cycling. The Li+ diffusion coefficient can be improved by reducing the inner diameter and wall thickness of the fibers. As a model system, the paper-like electrode (GeP@NC-2) with a fiber diameter of 280 nm and a wall thickness of 110 nm exhibited the best electrochemical performance. When applied as anodes in LiBs, it displayed a reversible capacity of 612 mAh g–1 at the 600th cycle at 1 A g–1, while GeP@NC-0 with a solid structure only delivered 239 mAh g–1. Furthermore, the GeP@NC-2 also exhibited good long-term cycling stability at 5 A g–1, and the capacity displayed a slight difference of 221.2 and 209.0 mAh g–1 in a voltage range of 0∼3 V and 0∼1.5 V, respectively. The well-defined synthetic approach combined with unique nanostructural design provided a meaningful reference for the rational design and development of next-generation flexible and high-performance LiB anodes.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Zeng

Feng

Liu

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Recent Progress on Designing Carbon Materials by Structural Tuning and Morphological Modulation as K+-Storage Anodes

Ruan,

Luo,

et al. 2024

Electrochem. Energy Rev.

View full text Add to dashboard Cite

CoS nanoparticle encapsulated S-doped carbon nanofiber/nanotube hybrid grown on exfoliated graphite for long-lifespan and high-rate potassium ion batteries

Wang

Zhao

Cao

et al. 2022

Applied Surface Science

View full text Add to dashboard Cite

Co₉S₈@carbon nanofiber as the high-performance anode for potassium-ion storage

Abstract: Co9S8@carbon nanofibers with boosted highly active electrode–electrolyte area, fast kinetics and controlled volume expansion show an excellent cycling and rate performance in potassium ion batteries.

Cited by 6 publications

References 28 publications

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Recent Progress on Designing Carbon Materials by Structural Tuning and Morphological Modulation as K+-Storage Anodes

CoS nanoparticle encapsulated S-doped carbon nanofiber/nanotube hybrid grown on exfoliated graphite for long-lifespan and high-rate potassium ion batteries

Contact Info

Product

Resources

About

Co9S8@carbon nanofiber as the high-performance anode for potassium-ion storage

Abstract: Co9S8@carbon nanofibers with boosted highly active electrode–electrolyte area, fast kinetics and controlled volume expansion show an excellent cycling and rate performance in potassium ion batteries.

Cited by 6 publications

References 28 publications

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Confining Nano-GeP in Nitrogenous Hollow Carbon Fibers toward Flexible and High-Performance Lithium-Ion Batteries

Recent Progress on Designing Carbon Materials by Structural Tuning and Morphological Modulation as K+-Storage Anodes

CoS nanoparticle encapsulated S-doped carbon nanofiber/nanotube hybrid grown on exfoliated graphite for long-lifespan and high-rate potassium ion batteries

Contact Info

Product

Resources

About

Co₉S₈@carbon nanofiber as the high-performance anode for potassium-ion storage