Flexible Membrane Consisting of MoP Ultrafine Nanoparticles Highly Distributed Inside N and P Codoped Carbon Nanofibers as High-Performance Anode for Potassium-Ion Batteries

Yi, Zhibin; Liu, Ying; Li, Yingzhi; Zhou, Liangjun; Wang, Zhenyu; Zhang, Jianqiao; Cheng, Hua; Lu, Zhouguang

2019-12-10

10.1002/smll.201905301

Small   影响因子和分区

1613-6810

1613-6829

Rechargeable potassium-ion batteries (PIBs) have attracted tremendous attention as potential electrical energy storage systems due to the special merit of abundant resources and low cost of potassium. However, one critical barrier to achieve practical application of PIBs has been the lack of suitable electrode materials. Here, a novel flexible membrane consisting of N, P codoped carbon nanofibers decorated with MoP ultrafine nanoparticles (MoP@NPCNFs) is fabricated via a simple electrospinning method combined with the later carbonization and phosphorization process. The 3D porous CNF structure in the as-synthesized composite can shorten the transport pathways of K-ions and improve the conductivity of electrons. The ultrafine MoP nanoparticles can guarantee high specific capacity and the N, P co-doping could improve wettability of electrodes to electrolytes. As expected, the free-standing MoP@NPCNF electrode demonstrates a high capacity of 320 mAh g(-1) at 100 mA g(-1), a superior rate capability maintaining 220 mAh g(-1) at 2 A g(-1), as well as a capacity retention of more than 90% even after 200 cycles. The excellent rate performance, high reversible capacity, long-term cycling stability, and facile synthesis routine make this hybrid membrane promising anode for potassium-ion batteries.

anode free-standing MoP N and P codoped carbon nanofibers potassium ion batteries

SCI ; EI

英语

第一 ; 通讯

Innovative Entrepreneurship Training Program of Southern University of Science and Technology[2017 x 07]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000501675500001

WILEY-V C H VERLAG GMBH

20195107853184

Carbon nanofibers ; Carbonization ; Ions ; Nanoparticles ; Potassium ; Secondary batteries

Alkali Metals:549.1 ; Secondary Batteries:702.1.2 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Solid State Physics:933

Web of Science

Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Yi, Zhibin,Liu, Ying,Li, Yingzhi,et al. Flexible Membrane Consisting of MoP Ultrafine Nanoparticles Highly Distributed Inside N and P Codoped Carbon Nanofibers as High-Performance Anode for Potassium-Ion Batteries[J]. Small,2019,16(2).

Yi, Zhibin.,Liu, Ying.,Li, Yingzhi.,Zhou, Liangjun.,Wang, Zhenyu.,...&Lu, Zhouguang.(2019).Flexible Membrane Consisting of MoP Ultrafine Nanoparticles Highly Distributed Inside N and P Codoped Carbon Nanofibers as High-Performance Anode for Potassium-Ion Batteries.Small,16(2).

Yi, Zhibin,et al."Flexible Membrane Consisting of MoP Ultrafine Nanoparticles Highly Distributed Inside N and P Codoped Carbon Nanofibers as High-Performance Anode for Potassium-Ion Batteries".Small 16.2(2019).