Freestanding Na3V2O2(PO4)(2)F/Graphene Aerogels as High-Performance Cathodes of Sodium-Ion Full Batteries

doi:10.1021/acsami.0c11074

	Freestanding Na3V2O2(PO4)(2)F/Graphene Aerogels as High-Performance Cathodes of Sodium-Ion Full Batteries
	Chang, Wei 2,3; Zhang, Xiao-Ying 2; Qu, Jin 2; Chen, Zhe 1; Zhang, Yu-Jiao 4; Sui, Yanqiu 3; Ma, Xiu-Feng 2; Yu, Zhong-Zhen 3
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020-09-16
卷号	12 期号:37 页码:41419-41428
关键词	graphene aerogels sodium vanadium fluorophosphate sodium-ion batteries freestanding electrode full battery
ISSN号	1944-8244
DOI	10.1021/acsami.0c11074
英文摘要	Although sodium vanadium fluorophosphate, Na-3(VO1-xPO4)(2)F1+2x (0 <= x <= 1), is a highly promising cathode candidate for sodium-ion batteries because of its stable structure and high working voltage, the low charge diffusion dynamics and the inactive materials used in traditional coating electrodes reduce the energy density of a sodium-ion full battery. Hence, Na3V2O2(PO4)(2)F/graphene aerogels (NVPF/GAs) with a three-dimensional continuous porous network are first prepared by coassembly and freeze-drying. The three-dimensional porous network helps to obtain a high NVPF content of 81 wt %, relieve the volume change for improving the cyclability, and enhance the wettability of the electrode with the electrolyte for accelerating the diffusion dynamics of sodium ions and electrons. As a directly used freestanding cathode without the use of any binder/collector, an optimized freestanding NVPF/GA electrode exhibits excellent cycling and rate performances compared to traditional coating electrodes. The average capacities at current densities of 0.2, 0.5, 1.0, 2.0, and 5.0 C are 135.4, 128.0, 125.1, 121.9, and 115.1 mA h g(-1), respectively. Especially, it maintains a capacity retention of 100% after 1000 cycles at an ultrahigh current of 40 C. A sodium-ion full battery with the NVPF/GA cathode and the Sb/graphene/carbon anode attains a of 82.1 mA h g(-1) without an obvious decline after 100 cycles.
资助项目	National Natural Science Foundation of China[51972016] ; National Natural Science Foundation of China[51533001] ; Fundamental Research Funds for the Central Universities[XK1802] ; Science and Technology Projects of State Grid Corporation of China
WOS关键词	3-DIMENSIONAL GRAPHENE ; TEMPERATURE SYNTHESIS ; NANOPARTICLES ; NA3V2(PO4)(3) ; ANODE ; STRATEGY
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000572965700045
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Science and Technology Projects of State Grid Corporation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42122]
专题	中国科学院过程工程研究所
通讯作者	Qu, Jin; Yu, Zhong-Zhen
作者单位	1.North China Elect Power Univ, Coll Environm Sci & Engn, Beijing 102206, Peoples R China 2.Beijing Univ Chem Technol, Coll Mat Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 3.Beijing Univ Chem Technol, Beijing Key Lab Adv Funct Polymer Composites, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chang, Wei,Zhang, Xiao-Ying,Qu, Jin,et al. Freestanding Na3V2O2(PO4)(2)F/Graphene Aerogels as High-Performance Cathodes of Sodium-Ion Full Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(37):41419-41428.
APA	Chang, Wei.,Zhang, Xiao-Ying.,Qu, Jin.,Chen, Zhe.,Zhang, Yu-Jiao.,...&Yu, Zhong-Zhen.(2020).Freestanding Na3V2O2(PO4)(2)F/Graphene Aerogels as High-Performance Cathodes of Sodium-Ion Full Batteries.ACS APPLIED MATERIALS & INTERFACES,12(37),41419-41428.
MLA	Chang, Wei,et al."Freestanding Na3V2O2(PO4)(2)F/Graphene Aerogels as High-Performance Cathodes of Sodium-Ion Full Batteries".ACS APPLIED MATERIALS & INTERFACES 12.37(2020):41419-41428.