| 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 Author | Sui, Dianpeng() ; Qi, Wei(wqi@imr.ac.cn) |
| 2021-05-18 | |
| Source Publication | DALTON TRANSACTIONS
 |
| ISSN | 1477-9226 |
| Pages | 9 |
| Abstract | An 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 Organization | NSFC ; Natural Science Foundation of Liaoning Province of China |
| DOI | 10.1039/d1dt00404b |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NSFC[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 Area | Chemistry |
| WOS Subject | Chemistry, Inorganic & Nuclear |
| WOS ID | WOS:000657846900001 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160230 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sui, Dianpeng; Qi, Wei |
| Affiliation | 1.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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