63 / 2019-10-18 22:39:36
A FCILE STRATEGY TO PREPARE (N, NI, P) TRIDOPED ECHINUS-LIKE POROUS CARBON SPHERES AS ADVANCED ANODE FOR LITHIUM ION BATTERIES
lithium ions battery, carbon spheres, heteroatom doping
摘要待审
Heteroatom doped carbon nanomaterials are often employed as advanced anodes for lithium ion batteries (LIBs) because of their stable structure, high capacity and low cost. In this work, we proposed a novel strategy to synthesize high density (N, Ni, P) tri-doped echinus-like porous carbon spheres (PCS) by carbonizing a metal-organophosphine framework (MOPF) directly. The MOPF employs riboflavin sodium phosphate (C17H20N4NaO9P) as an organic ligand as well as a nitrogen and phosphorus source to conjugate with Ni (NO3)2·6H2O. As an anode for LIBs, PCS was demonstrated with discharge capacities that were able to reach 386.5 mAh·g−1 after 100 cycles at a current density of 0.05 A·g−1. Besides, the stable reversible capacities were obtained from ~459 mAh·g−1 to ∼91.8 mAh·g−1 when the current density was varied from 0.05 to 1A·g−1. The good anode performance is attributed to the unique structure of PCS and (N, Ni, P) tri-doping which introduces the additional capacities due to the presence of the ‘reservoir effect’. Moreover, the electrochemical analysis implied that the surface-limited capacitive behavior dominantly contributes to the lithium ion storage capacity of the PCS anode.
重要日期
  • 会议日期

    11月15日

    2019

    11月18日

    2019

  • 10月20日 2019

    初稿截稿日期

  • 11月18日 2019

    注册截止日期

承办单位
John Wiley & Sons Inc.出版集团
温州大学化学与材料工程学院
温州大学新材料与产业技术研究院
《Carbon Energy》杂志
浙江省自然科学基金委
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