Exploration of high performance and highly flexible supercapacitor configuration with MXene/1T-MoS2 composite paper electrode

Qiao，Yongna1; Sun，Weicheng2; Yu，Fei3; Yu，Jiali1; Yao，Pingping1; Zhu，Caizhen1; Xu，Jian1

2023-10-01

10.1016/j.electacta.2023.142929

Electrochimica Acta   Impact Factor & Quartile

0013-4686

1873-3859

In the case of increasing shortage of non-renewable resources, developing high-efficiency and high-capacity energy storage devices is critical. Supercapacitors have the potential of high-efficiency and high-capacity. MXene and 1T-MoS are two kinds of high performance pseudocapacitive materials. However, the stacking and aggregation of MXene nanosheets greatly reduce its capacity. The poor conductivity of 1T-MoS also limits the full expression of its excellent pseudocapacitive performance. A flexible MXene/1T-MoS composite paper electrode is designed and prepared in this work where the restacking of MXene can be relieved and the whole electrode maintains the conductivity. The interior stacking structure of MXene and 1T-MoS in the composite paper, as well as the gel electrolyte type are explored. The device constructed with the electrode composed of randomly stacked MXene and 1T-MoS (mass ratio 6:1) and acidic electrolyte (PVA/HSO gel electrolyte) demonstrates the optimal performance. The specific areal and volumetric capacitances reach 561.2 mF cm and 1268.17 F cm at the current density of 0.8 mA cm respectively, outperforming most of the previously reported values for MXene based supercapacitors tested in gel electrolyte. The supercapacitor has excellent deformation durability and long cycle stability, demonstrating promising prospect in future flexible electronics.

1T-MoS2 MXene Pseudocapacitive material Supercapacitor

SCI

English

Others

National Natural Science Foundation of China[22175121];National Natural Science Foundation of China[51973118];National Natural Science Foundation of China[52103018];

Electrochemistry

Electrochemistry

WOS:001050675500001

PERGAMON-ELSEVIER SCIENCE LTD

CHEMISTRY

2-s2.0-85165715824

Scopus

1.College of Chemistry and Environmental Engineering,Institute of Low-dimensional Materials Genome Initiative,Shenzhen University,Shenzhen,Guangdong,518060,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
3.Rizhao Customs Port Outpatient Department,Rizhao International Travel Healthcare Center,Rizhao,Shandong,276826,China

Qiao，Yongna,Sun，Weicheng,Yu，Fei,et al. Exploration of high performance and highly flexible supercapacitor configuration with MXene/1T-MoS2 composite paper electrode[J]. Electrochimica Acta,2023,464.

Qiao，Yongna.,Sun，Weicheng.,Yu，Fei.,Yu，Jiali.,Yao，Pingping.,...&Xu，Jian.(2023).Exploration of high performance and highly flexible supercapacitor configuration with MXene/1T-MoS2 composite paper electrode.Electrochimica Acta,464.

Qiao，Yongna,et al."Exploration of high performance and highly flexible supercapacitor configuration with MXene/1T-MoS2 composite paper electrode".Electrochimica Acta 464(2023).