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Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors
Chen, Huaxia1; Lu, Xingyu2; Zhang, Lili1,2; Sui, Dianpeng1; Wang, Chao3; Meng, Fanbao1; Qi, Wei2
Corresponding AuthorSui, Dianpeng() ; Qi, Wei(wqi@imr.ac.cn)
2021-05-18
Source PublicationDALTON TRANSACTIONS
ISSN1477-9226
Pages9
AbstractAn N-doped graphene aerogel (NGA) is used as a reactive container for growing MnO2 nanoparticles via a soaking-hydrothermal strategy. MnO2 nanoparticles pile up on the surface of reduced graphene oxide sheets with crosslinked structures serving as electrical conductors. Importantly, the NGA generates extra capacitance during the electrochemical process, which accomplishes a satisfactory compensation in the physical-chemical properties of MnO2. As a cathodic electrode for Zn-ion batteries, the MnO2/NGA exhibits a specific capacity of 275.8 mA h g(-1) and pre-eminent cycling stability with a retention of 93.6% at 3 A g(-1) after 1000 cycles. Meanwhile, the proposed electrode also shows a relatively high specific capacitance of 341 F g(-1) for a supercapacitor in 1 M Na2SO4. Meanwhile, the long-term cycling stability shows only a slight decrease by 5.1% of the initial capacitance after 5000 continuous cycles at 3 A g(-1), which indicates its superior electrochemical stability. Additionally, the assembled asymmetric supercapacitor also shows good electrochemical performance. This work highlights the extensive function of an N-doped graphene aerogel as a promising substrate for enhancing the electrochemical performance of MnO2, which opens the gate for wide potential applications of graphene aerogel composites emphasizing their complementary effects.
Funding OrganizationNSFC ; Natural Science Foundation of Liaoning Province of China
DOI10.1039/d1dt00404b
Indexed BySCI
Language英语
Funding ProjectNSFC[22072163] ; NSFC[21761132010] ; NSFC[91645114] ; Natural Science Foundation of Liaoning Province of China[2020-YQ-02] ; Natural Science Foundation of Liaoning Province of China[2019-MS-296]
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000657846900001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160230
Collection中国科学院金属研究所
Corresponding AuthorSui, Dianpeng; Qi, Wei
Affiliation1.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Shenyang Pharmaceut Univ, Sch Med Devices, 103,Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Chen, Huaxia,Lu, Xingyu,Zhang, Lili,et al. Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors[J]. DALTON TRANSACTIONS,2021:9.
APA Chen, Huaxia.,Lu, Xingyu.,Zhang, Lili.,Sui, Dianpeng.,Wang, Chao.,...&Qi, Wei.(2021).Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors.DALTON TRANSACTIONS,9.
MLA Chen, Huaxia,et al."Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors".DALTON TRANSACTIONS (2021):9.
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