In Situ Synthesis of CuCo2 S4 @N/S-Doped Graphene Composites with Pseudocapacitive Properties for High-Performance Lithium-Ion Batteries

ACS Applied Materials & Interfaces
Pengxiang WangKening Sun

Abstract

To satisfy the demand of high power application, lithium-ion batteries (LIBs) with high power density have gained extensive research effort. The pseudocapacitive storage of LIBs is considered to offer high power density through fast faradic surface redox reactions rather than the slow diffusion-controlled intercalation process. In this work, CuCo2S4 anchored on N/S-doped graphene is in situ synthesized and a typical pseudocapacitive storage behavior is demonstrated when applied in the LIB anode. The pseudocapacitive storage and N/S-doped graphene enable the composite to display a capacity of 453 mA h g-1 after 500 cycles at 2 A g-1 and a ultrahigh rate capability of 328 mA h g-1 at 20 A g-1. We believe that this work could further promote the research on pseudocapacitive storage in transition-metal sulfides for LIBs.

References

Sep 27, 2013·Scientific Reports·Yuewei ZhangWei Chen
Aug 25, 2016·ACS Nano·Yongqiang TengKonrad Świerczek
Dec 16, 2016·ACS Applied Materials & Interfaces·Hui QiKazumichi Yanagisawa

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Citations

Nov 10, 2018·Chemistry : a European Journal·Tian ZhengManman Ren
Sep 12, 2020·Chemical Communications : Chem Comm·Bakhytzhan BaptayevMannix P Balanay
Oct 16, 2021·ACS Applied Materials & Interfaces·Sheng-Xue YanLong-Jiao Chang

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