PMID- 30701686
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 1613-6829 (Electronic)
IS  - 1613-6810 (Linking)
VI  - 15
IP  - 9
DP  - 2019 Mar
TI  - Mesopore-Induced Ultrafast Na(+) -Storage in T-Nb(2) O(5) /Carbon Nanofiber Films 
      toward Flexible High-Power Na-Ion Capacitors.
PG  - e1804539
LID - 10.1002/smll.201804539 [doi]
AB  - Hybrid Na-ion capacitors (NICs) are receiving considerable interest because they 
      combine the merits of both batteries and supercapacitors and because of the 
      low-cost of sodium resources. However, further large-scale deployment of NICs is 
      impeded by the sluggish diffusion of Na(+) in the anode. To achieve rapid redox 
      kinetics, herein the controlled fabrication of mesoporous orthorhombic-Nb(2) O(5) 
      (T-Nb(2) O(5) )/carbon nanofiber (CNF) networks is demonstrated via in situ 
      SiO(2) -etching. The as-obtained mesoporous T-Nb(2) O(5) (m-Nb(2) O(5) )/CNF 
      membranes are mechanically flexible without using any additives, binders, or 
      current collectors. The in situ formed mesopores can efficiently increase Na(+) 
      -storage performances of the m-Nb(2) O(5) /CNF electrode, such as excellent rate 
      capability (up to 150 C) and outstanding cyclability (94% retention after 10 000 
      cycles at 100 C). A flexible NIC device based on the m-Nb(2) O(5) /CNF anode and 
      the graphene framework (GF)/mesoporous carbon nanofiber (mCNF) cathode, is 
      further constructed, and delivers an ultrahigh power density of 60 kW kg(-1) at 
      55 Wh kg(-1) (based on the total weight of m-Nb(2) O(5) /CNF and GF/mCNF). More 
      importantly, owing to the free-standing flexible electrode configuration, the 
      m-Nb(2) O(5) /CNF//GF/mCNF NIC exhibits high volumetric energy and power 
      densities (11.2 mWh cm(-3) , 5.4 W cm(-3) ) based on the full device, which holds 
      great promise in a wide variety of flexible electronics.
CI  - (c) 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Li, Yuzhu
AU  - Li Y
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - Wang, Huanwen
AU  - Wang H
AUID- ORCID: 0000-0001-9880-7723
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - Wang, Libin
AU  - Wang L
AD  - State Key Laboratory of Materials Processing and Die & Mould Technology, School 
      of Materials Science and Engineering, Huazhong University of Science and 
      Technology, Wuhan, 430074, China.
FAU - Mao, Zhifei
AU  - Mao Z
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - Wang, Rui
AU  - Wang R
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - He, Beibei
AU  - He B
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - Gong, Yansheng
AU  - Gong Y
AD  - Engineering Research Center of Nano-Geomaterials of Ministry of Education, 
      Faculty of Material and Chemistry, China University of Geosciences, Wuhan, 
      430074, China.
FAU - Hu, Xianluo
AU  - Hu X
AUID- ORCID: 0000-0002-5769-167X
AD  - State Key Laboratory of Materials Processing and Die & Mould Technology, School 
      of Materials Science and Engineering, Huazhong University of Science and 
      Technology, Wuhan, 430074, China.
LA  - eng
GR  - 51702295/National Natural Science Foundation of China/
GR  - 51702294/National Natural Science Foundation of China/
GR  - 51772116/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20190130
PL  - Germany
TA  - Small
JT  - Small (Weinheim an der Bergstrasse, Germany)
JID - 101235338
OTO - NOTNLM
OT  - Nb2O5
OT  - carbon nanofibers
OT  - flexible
OT  - mesoporous
OT  - sodium-ion capacitors
EDAT- 2019/02/01 06:00
MHDA- 2019/02/01 06:01
CRDT- 2019/02/01 06:00
PHST- 2018/10/30 00:00 [received]
PHST- 2019/01/05 00:00 [revised]
PHST- 2019/02/01 06:00 [pubmed]
PHST- 2019/02/01 06:01 [medline]
PHST- 2019/02/01 06:00 [entrez]
AID - 10.1002/smll.201804539 [doi]
PST - ppublish
SO  - Small. 2019 Mar;15(9):e1804539. doi: 10.1002/smll.201804539. Epub 2019 Jan 30.