Remarkable Conductivity Design of FeCo₂S₄/MXene 2D Membrane Electrodes for Advanced Pseudocapacitance Characteristic Behavior

Shengxue Yan; Rui Huang; Hansai Liu; Shaohua Luo

doi:10.1021/acsaem.4c01635

journal article·2024-08-12

Remarkable Conductivity Design of FeCo₂S₄/MXene 2D Membrane Electrodes for Advanced Pseudocapacitance Characteristic Behavior

Shengxue Yan, Rui Huang, Hansai Liu, Shaohua Luo

ACS Applied Energy Materials· Volume 7· Issue 15

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Source abstract

Abstract

Supercapacitors (SCs) are promising energy supply systems for various electronics. In this work, we detailed the in situ growth of FeCo 2 S 4 on MXene for asymmetric SCs. Notably, the digital model was first built to explore the relationship between wt (FeCo 2 S 4 ) and capacitance performance, realizing the maximum theoretical capacity (3635.7 F g –1 ) prediction. Furthermore, it was discovered that the synergistic effect of the FeCo 2 S 4 /MXene heterojunction could dramatically improve conductivity and structural stability, which accelerated charge transmission at the electrode/electrolyte interface, resulting in a significant enhancement in electrochemical performance. The FeCo 2 S 4 /MXene electrode exhibited a higher capacitance of 2415.3 F g –1 and a prominent long-term stability of about 90.5%. And the FeCo 2 S 4 /MXene//AC declared an impressive energy density of 68.7 Wh kg –1 at a power density of 800 W kg –1 . The FeCo 2 S 4 /MXene composite systems have great potential for advanced SC systems due to their facile assembly and remarkable electrochemical performance.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage Composites

OpenAlex topics: MXene and MAX Phase Materials · Supercapacitor Materials and Fabrication · Advanced Memory and Neural Computing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China

School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China

Hebei Key Laboratory of Dielectric and Electrolyte Functional Material, Qinhuangdao 066004, PR China

Funding

Natural Science Foundation of Hebei Province · Hebei Province Science and Technology Support Program · Qinhuangdao Science and Technology Bureau · Department of Education of Hebei Province · Steel and Iron Foundation of Hebei Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Basic Research Project of Shijiazhuang City · Central Guided Local Science and Technology Development Fund Project of Hebei province · Hebei Provincial doctoral candidate Innovation Ability training funding project

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