Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device
Abstract Perovskite oxides, as a kind of functional materials, have been widely studied in recent years due to its unique physical, chemical, and electrical properties. Here, we successfully prepared perovskite-type LaCoO3 (LCOs) nanomaterials via an improved sol-gel method followed by calcination,...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-09-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-020-03411-z |
| _version_ | 1797704990423252992 |
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| author | Bin Zhang Chuanfu Yu Zijiong Li |
| author_facet | Bin Zhang Chuanfu Yu Zijiong Li |
| author_sort | Bin Zhang |
| collection | DOAJ |
| description | Abstract Perovskite oxides, as a kind of functional materials, have been widely studied in recent years due to its unique physical, chemical, and electrical properties. Here, we successfully prepared perovskite-type LaCoO3 (LCOs) nanomaterials via an improved sol-gel method followed by calcination, and investigated the influence of calcination temperature and time on the morphology, structure, and electrochemical properties of LaCoO3 nanomaterials. Then, based on the optimal electrochemical performance of LCO-700-4 electrode sample, the newly synthesized nanocomposites of Sr-doping (LSCO-0.2) and rGO-compounding (rGO@LCO) through rational design exhibited a 1.45-fold and 2.03-fold enhancement in its specific capacitance (specific capacity). The rGO@LCO electrode with better electrochemical performances was further explored by assembling rGO@LCO//rGO asymmetric supercapacitor system (ASS) with aqueous electrolyte. The result showed that the ASS delivers a high energy density of 17.62 W h kg−1 and an excellent cyclic stability with 94.48% of initial capacitance after 10,000 cycles, which are good electrochemical performances among aqueous electrolytes for green and new efficient energy storage devices. |
| first_indexed | 2024-03-12T05:28:34Z |
| format | Article |
| id | doaj.art-5465dc4873ea4411b3b09ca3f22bdaa4 |
| institution | Directory Open Access Journal |
| issn | 1556-276X |
| language | English |
| last_indexed | 2024-03-12T05:28:34Z |
| publishDate | 2020-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-5465dc4873ea4411b3b09ca3f22bdaa42023-09-03T07:05:05ZengSpringerOpenNanoscale Research Letters1556-276X2020-09-0115111310.1186/s11671-020-03411-zEnhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage DeviceBin Zhang0Chuanfu Yu1Zijiong Li2School of Physics and Microelectronics, Zhengzhou UniversityHenan Aerospace Hydraulic & Pneumatic Technology Co., Ltd.School of Physics & Electronic Engineering, Zhengzhou University of Light IndustryAbstract Perovskite oxides, as a kind of functional materials, have been widely studied in recent years due to its unique physical, chemical, and electrical properties. Here, we successfully prepared perovskite-type LaCoO3 (LCOs) nanomaterials via an improved sol-gel method followed by calcination, and investigated the influence of calcination temperature and time on the morphology, structure, and electrochemical properties of LaCoO3 nanomaterials. Then, based on the optimal electrochemical performance of LCO-700-4 electrode sample, the newly synthesized nanocomposites of Sr-doping (LSCO-0.2) and rGO-compounding (rGO@LCO) through rational design exhibited a 1.45-fold and 2.03-fold enhancement in its specific capacitance (specific capacity). The rGO@LCO electrode with better electrochemical performances was further explored by assembling rGO@LCO//rGO asymmetric supercapacitor system (ASS) with aqueous electrolyte. The result showed that the ASS delivers a high energy density of 17.62 W h kg−1 and an excellent cyclic stability with 94.48% of initial capacitance after 10,000 cycles, which are good electrochemical performances among aqueous electrolytes for green and new efficient energy storage devices.http://link.springer.com/article/10.1186/s11671-020-03411-zPerovskite oxidesLaCoO3-based nanocompositesRational designElectrode materialsEnergy storage devices |
| spellingShingle | Bin Zhang Chuanfu Yu Zijiong Li Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device Nanoscale Research Letters Perovskite oxides LaCoO3-based nanocomposites Rational design Electrode materials Energy storage devices |
| title | Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device |
| title_full | Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device |
| title_fullStr | Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device |
| title_full_unstemmed | Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device |
| title_short | Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device |
| title_sort | enhancing the electrochemical properties of lacoo3 by sr doping rgo compounding with rational design for energy storage device |
| topic | Perovskite oxides LaCoO3-based nanocomposites Rational design Electrode materials Energy storage devices |
| url | http://link.springer.com/article/10.1186/s11671-020-03411-z |
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