TY - JOUR
T1 - Constructing PEDOT:PSS/Graphene sheet nanofluidic channels to achieve dendrite-free Zn anode
AU - Qiu, Minghui
AU - Wang, Dong
AU - Tawiah, Benjamin
AU - Jia, Hao
AU - Fei, Bin
AU - Fu, Shaohai
N1 - Funding Information:
This work was financially supported by Natural Science Foundation of Jiangsu Province (BK20190613), the Fundamental Research Funds for the Central Universities (JUSRP22040 and JUSRP52007A) and National Natural Science Foundation of China (51703208).
Publisher Copyright:
© 2021
PY - 2021/6/15
Y1 - 2021/6/15
N2 - Despite the great progress on the development of zinc ion batteries (ZIBs) in recent years, the issue of zinc corrosion in aqueous media and the associated dendrite growth of the electrode remains a major challenge for achieving high-performance anode materials with long-term stability. Herein, we report a facile, yet, effective interfacial optimization of zinc (Zn) anode using a nanofluidic channel (NC) layer made up of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) decorated graphene sheets (GSs) produced by electrochemical exfoliation. The NCs effectively modulated the Zn ion distribution density, inhibited dendrite growth, and restrained other side reactions due to its tunable channel size and the surface functional groups. Moreover, the extra conductive polymer (PEDOT:PSS) on the NC layer curbed the polarization problem by enhancing the electric field on the Zn anode. As a result, PEDOT:PSS/GS@Zn anode demonstrated prolonged cycling stability for 8000 cycles with substantial improvements in specific discharge capacity due to the enhanced electron transit efficiency. In summary, our work proposes a scalable technological approach to fabricate dendrite-free Zn anodes and provides a universal inspiration to restrain dendrite formation during the ion electroplating processes.
AB - Despite the great progress on the development of zinc ion batteries (ZIBs) in recent years, the issue of zinc corrosion in aqueous media and the associated dendrite growth of the electrode remains a major challenge for achieving high-performance anode materials with long-term stability. Herein, we report a facile, yet, effective interfacial optimization of zinc (Zn) anode using a nanofluidic channel (NC) layer made up of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) decorated graphene sheets (GSs) produced by electrochemical exfoliation. The NCs effectively modulated the Zn ion distribution density, inhibited dendrite growth, and restrained other side reactions due to its tunable channel size and the surface functional groups. Moreover, the extra conductive polymer (PEDOT:PSS) on the NC layer curbed the polarization problem by enhancing the electric field on the Zn anode. As a result, PEDOT:PSS/GS@Zn anode demonstrated prolonged cycling stability for 8000 cycles with substantial improvements in specific discharge capacity due to the enhanced electron transit efficiency. In summary, our work proposes a scalable technological approach to fabricate dendrite-free Zn anodes and provides a universal inspiration to restrain dendrite formation during the ion electroplating processes.
KW - Aqueous Zn ion batteries
KW - Dendrite-free Zn anode
KW - Electrochemical exfoliation
KW - Exfoliated graphene sheets
KW - Nanofluidic channels
UR - http://www.scopus.com/inward/record.url?scp=85102894239&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2021.108798
DO - 10.1016/j.compositesb.2021.108798
M3 - Journal article
AN - SCOPUS:85102894239
SN - 1359-8368
VL - 215
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 108798
ER -