% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Wang:1024812,
      author       = {Wang, Pengyue and Hu, Tianran and Guo, Yong and Cui,
                      Yincang and Wang, Ruiying and Yang, Aikai and Huang, Yudai
                      and Wang, Xingchao},
      title        = {{C}o{S}2 confined into {N}-doped coal-based carbon fiber as
                      flexible anode for high performance potassium-ion capacitor},
      journal      = {Journal of alloys and compounds},
      volume       = {970},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {FZJ-2024-02478},
      pages        = {172618 -},
      year         = {2024},
      abstract     = {Potassium-ion capacitors (PICs), skillfully combining the
                      features of batteries and capacitors, hold promise in energy
                      conversion and storage. Cobalt sulfide (CoS2) anode are
                      promising alternatives due to its high theoretical capacity
                      and excellent potassium storage capacity. However, severe
                      volume changes of CoS2 anode leads to capacity decline and
                      poor cycle stability, hindering its application in PICs.
                      Herein, we successfully confine CoS2 nanoparticles in
                      N-doped coal-based carbon fibers (CoS2/CF). Coal-based
                      carbon fibers with flexible characteristic elevate the
                      conductivity and relieve the volume expansion of CoS2.
                      Moreover, the high content of edge nitrogen as active sites
                      further enhances the electrochemical properties. The PICs
                      with flexible CoS2/CF-0.8 as anode exhibits superior
                      specific capacity (331.1 mA h g−1 after 150 cycles at 0.1
                      A g−1) and long cycling (214.1 mA h g−1 after 900 cycles
                      at 1.0 A g−1). Ex-situ X-ray powder diffraction (XRD)
                      reveal that the mechanism of CoS2/CF-0.8 anode is based on
                      reversible intercalation and conversion reaction.
                      Importantly, CoS2/CF-0.8||activated carbon (AC) devices
                      shows excellent energy density (101.9 W h kg−1) and long
                      cycling $(82.23\%$ capacity maintenance rate after 1000
                      cycles). This work offers insights for other materials with
                      high theoretical capacity but volume expansion problem.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001101300000002},
      doi          = {10.1016/j.jallcom.2023.172618},
      url          = {https://juser.fz-juelich.de/record/1024812},
}