Enhanced energy storage performance of samarium manganese iron oxide — reduced graphene oxide composites: A structural and electrochemical investigation

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Diamond and Related Materials Pub Date : 2025-04-01 Epub Date: 2025-03-17 DOI:10.1016/j.diamond.2025.112219

Renu Dhahiya , Neetika Chauhan , Ashok Kumar

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Abstract

Supercapacitors are efficient energy storage systems that provide high power density and long cycle life. Recently, composite material-based supercapacitors have gained popularity as environmentally benign and effective energy-saving solutions. In this study, the microstructural and electrochemical properties of pristine Sm₂MnFeO₆ (SMFO) and reduced graphene oxide (rGO) composite Sm₂MnFeO₆/rGO (SMFO/rGO) are explored. Structural characterization provides insights into the lattice parameters of SMFO and SMFO/rGO material, while morphological analysis highlights the presence of agglomerated crystallites in both materials. Surface area measurements indicate an increase in porosity upon rGO incorporation, and elemental analysis confirms the oxidation states of the constituent elements in SMFO and the SMFO/rGO composite. Electrochemical investigations demonstrate the impact of rGO on charge storage capabilities, offering valuable insights into the potential of SMFO/rGO as an efficient electrode material for supercapacitor applications. The specific capacitance of SMFO/rGO improved by ∼155 % (505.3 Fg⁻¹) compared to SMFO (197.8 Fg⁻¹) at a current density 5 mVs⁻¹.

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钐锰铁氧化物-还原氧化石墨烯复合材料增强储能性能：结构和电化学研究

超级电容器是一种高效的能量存储系统，具有高功率密度和长循环寿命。最近，基于复合材料的超级电容器作为环保和有效的节能解决方案而受到欢迎。在本研究中，研究了原始Sm2MnFeO6 （SMFO）和还原氧化石墨烯（rGO）复合材料Sm2MnFeO6/rGO （SMFO/rGO）的微观结构和电化学性能。结构表征提供了SMFO和SMFO/rGO材料的晶格参数的见解，而形态分析强调了两种材料中团聚晶体的存在。表面积测量表明，加入氧化石墨烯后孔隙度增加，元素分析证实了SMFO和SMFO/rGO复合材料中组成元素的氧化态。电化学研究证明了氧化石墨烯对电荷存储能力的影响，为SMFO/rGO作为超级电容器高效电极材料的潜力提供了有价值的见解。在电流密度为5 mv−1时，SMFO/rGO的比电容比SMFO （197.8 Fg−1）提高了约155% （505.3 Fg−1）。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.