Electrospun free-standing FeP@NPC film for flexible sodium ion batteries with remarkable cycling stability

Shanshan Shi, Zhen Li, Liying Shen, Xiuping Yin, Yiming Liu, Guoliang Chang, Jing Wang, Shengming Xu, Jiujun Zhang, Yufeng Zhao

Research output: Contribution to journalArticlepeer-review

87 Scopus citations


Flexible and wearable portable electronic devices have attracted increasing interest as a promising technology for the growing flexible electrochemical energy storage, which however require excellent mechanical property, fast electrochemical kinetics and good structural stability of the electrode. To-date the reports about flexible sodium ion batteries are still rare owing to the lack of proper electrodes. Herein, we report a new binder-free anode material of electrospun free-standing FeP@NPC film with FeP nanoparticles wrapped in 3D interconnected N, P -codoped carbon fiber for high-performance sodium ion storage. The unique structure design offers various structural advantages: the growth of FeP nanoparticle is confined by the PAN nanofiber during the synthesis, and agglomeration of FeP is alleviated; the 3D connected carbon fiber network serves as electron/ion transport pathway to accelerate the reaction kinetics and meanwhile accommodates the volume expansion of FeP during the sodiation/disodiation process. A high reversible capacity of 557 ​mA ​h g-1 and remarkable cycling life of 1000 cycles are achieved. This research paves a novel strategy to construct the phosphides-based high-performance anode for the potential application in flexible energy storage devices.
Original languageEnglish (US)
Pages (from-to)78-83
Number of pages6
JournalEnergy Storage Materials
StatePublished - Aug 1 2020
Externally publishedYes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Materials Science(all)


Dive into the research topics of 'Electrospun free-standing FeP@NPC film for flexible sodium ion batteries with remarkable cycling stability'. Together they form a unique fingerprint.

Cite this