化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (9) : 144-149. DOI: 10.19817/j.cnki.issn1006-3536.2025.09.008

科学研究

硫化工艺对MnCo₂S₄电极材料性能的影响

作者信息 +

Effect of sulfurization process on the performance of MnCo₂S₄ electrode materials

Lv Duanzhe, Zhong Weili, Shan Xiaohui, Tang Lidan, Qi Jingang

Author information +

文章历史 +

Received		Published
2024-07-31		2025-09-20
Issue Date	Revised Date
2025-09-16	2024-07-31

PDF

摘要

采用二次水热法制备四硫化二钴锰(MnCo₂S₄)电极材料。通过X射线衍射仪、场发射扫描电子显微镜、循环伏安法测试、恒流充放电测试和交流阻抗测试分别对电极材料的结构、形貌和电化学性能进行表征和研究。结果表明:当硫化温度为160℃、硫化时间为6h时,制备的电极材料形貌呈大量纳米针状结构,末端有枝桠状形貌,纳米针相互交织,分布致密,材料结构最佳;当电流密度为1A/g时,电极材料质量比电容可达到873.5F/g。以 MnCo₂S₄为正极材料,活性炭(AC)为负极材料组装成MCS//AC非对称超级电容器。电流密度为1A/g时,MCS//AC非对称超级电容器质量比电容为33.1F/g,当电流密度从1A/g增加到5A/g时,电容保持率为56%。

Abstract

Manganese cobalt tetrasulfide (MnCo₂S₄) electrode materials were synthesized via a two-step hydrothermal method.The structure,morphology and electrochemical performance of the electrode materials were characterized and investigated using X-ray diffraction,field emission scanning electron microscope,cyclic voltammetry,constant current charge-discharge tests,and alternating current impedance tests.The experimental results indicated that when the sulfurization temperature was 160℃ and the sulfurization time was 6h,the prepared electrode material exhibited a morphology featuring numerous nano-needle structures with dendritic ends,and the nano-needles were interwoven with each other with dense distribution,forming the optimal material structure.The mass specific capacitance reached 873.5F/g at a current density of 1A/g.An MCS//AC asymmetric supercapacitor was assembled using MnCo₂S₄ as the positive electrode material and activated carbon (AC) as the negative electrode material.The mass specific capacitance of MCS//AC asymmetric supercapacitor at a current density of 1A/g was 33.1F/g.Its capacitance retention rate was 56% when the current density increased from 1A/g to 5A/g.

关键词

过渡金属硫化物 / 正极材料 / 非对称超级电容器

Key words

transition metal sulfides / positive electrode materials / asymmetric supercapacitors

引用本文

引用格式 ▾

硫化工艺对MnCo₂S₄电极材料性能的影响[J]. 化工新型材料, 2025, 53(9): 144-149 DOI:10.19817/j.cnki.issn1006-3536.2025.09.008

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] Beknalkar S A,Teli A M,Shin J C.Current innovations and future prospects of metal oxide electrospun materials for supercapacitor technology:a review[J].Journal of Materials Science & Technology,2023,166:208-233.
[2] Ge J,Zhu M,Eisner E,et al.Imperceptible supercapacitors with high area-specific capacitance[J].Small,2021,17(24):2101704.
[3] Lu C,Meng J,Zhang J,et al.Three-dimensional hierarchically porous graphene fiber-shaped supercapacitors with high specific capacitance and rate capability[J].ACS Applied Materials & Interfaces,2019,11(34):31573.
[4] Simon P,Gogotsi Y.Perspectives for electrochemical capacitors and related devices[J].Nature Materials,2020,19(11):1151-1163.
[5] Béguin F,Presser V,Balducci A,et al.Supercapacitors:carbons and electrolytes for advanced supercapacitors[J].Advanced Materials,2014,26(14):2283.
[6] Simon P,Gogotsi Y.Materials for electrochemical capacitors[J].Nature Mater,2008,7:845-854.
[7] Jing W,Lai C H,Wong W S H,et al.A comprehensive study of battery-supercapacitor hybrid energy storage system for standalone PV power system in rural electrification[J].Applied Energy,2018,224:340-356.
[8] Zhou Y,Qi H,Yang J,et al.Two-birds-one-stone:multifunctional supercapacitors beyond traditional energy storage[J].Energy & Environmental Science,2021,14(4):1854-1896.
[9] Anil Kumar Y,Srinivasa Rao S,Punnoose D,et al.Influence of solvents in the preparation of cobalt sulfide for supercapacitors[J].Royal Society Open Science,2017,4(9):170427.
[10] Peng T,Qian Z,Wang J,et al.Construction of mass-controllable mesoporous NiCo₂S₄ electrodes for high performance supercapacitors[J].Journal of Materials Chemistry A,2014,2(45):19376-19382.
[11] Cai D,Wang D,Wang C,et al.Construction of desirable NiCo₂S₄ nanotube arrays on nickel foam substrate for pseudocapacitors with enhanced performance[J].Electrochimica Acta,2015,151:35-41.
[12] Yu J,Hou Z,Zhang H,et al.Synergistic coupling of MnS/Ni₃S₂ and Co(OH)₂ nanosheets as binder-free electrode materials for asymmetric supercapacitors with enhanced performance[J].Fuel,2024,357:129754.
[13] Mao X Q,Wang Z H,Kong W,et al.Nickel foam supported hierarchical Co₉S₈ nanostructures for asymmetric supercapa-citors[J].New Journal of Chemistry,2017,41(3):1142-1148.
[14] Song Y,Ding Y H,Yang C H,et al.Facile hydrothermal synthesis of cobaltosic sulfide nanorods for high performance supercapacitors[J].RSC Advances,2022,12(19):11665-11670.
[15] Mohamed S G,Attia S Y,Barakat Y F,et al.Hydrothermal synthesis of α-MnS nanoflakes@nitrogen and sulfur Co-doped rGO for high-performance hybrid supercapacitor[J].Chemistry Select,2018,3(22):6061-6072.
[16] Kim S H,Kim Y I,Park J,et al.Cobalt-manganese oxide/carbon-nanofiber composite electrodes for supercapacitors[J].International Journal of Electrochemical Science,2009,4(11):1489-1496.
[17] Zhou Yan,Jia Zixin,Zhao Siyuan,et al.Construction of triple-shelled hollow nanostructure by confining amorphous Ni-Co-S/crystalline MnS on/in hollow carbon nanospheres for all-solid-state hybrid supercapacitors[J].Chemical Engineering Journal,2021,416:129500.
[18] 仲为礼,唐立丹,王冰,等.NiCoTe₂电极材料制备及其电化学性能研究[J].功能材料,2024,55(4):4174-4178.
[19] Pell W G,Conway B E.Peculiarities and requirements of asymmetric capacitor devices based on combination of capacitor and battery-type electrode[J].Journal of Power Sources,2004,136:334-345.
[20] 章磊,黄军,郑俊生,等.超级电容器的能量限制与提升措施[J].化工进展,2017,36(5):1666-1674.