Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors

doi:10.1039/d1dt00404b

IMR OpenIR

	Enhanced electrochemical performance of MnO2 nanoparticles: graphene aerogels as conductive substrates and capacitance contributors
	Chen, Huaxia 1; Lu, Xingyu 2; Zhang, Lili 1,2; Sui, Dianpeng 1; Wang, Chao 3; Meng, Fanbao 1; Qi, Wei 2
通讯作者	Sui, Dianpeng() ; Qi, Wei(wqi@imr.ac.cn)
	2021-05-18
发表期刊	DALTON TRANSACTIONS
ISSN	1477-9226
页码	9
摘要	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.
资助者	NSFC ; Natural Science Foundation of Liaoning Province of China
DOI	10.1039/d1dt00404b
收录类别	SCI
语种	英语
资助项目	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研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:000657846900001
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160230
专题	中国科学院金属研究所
通讯作者	Sui, Dianpeng; Qi, Wei
作者单位	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
推荐引用方式 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.