PMID- 35218315
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220421
IS  - 1613-6829 (Electronic)
IS  - 1613-6810 (Linking)
VI  - 18
IP  - 16
DP  - 2022 Apr
TI  - Interlayer-Expanded Titanate Hierarchical Hollow Spheres Embedded in Carbon 
      Nanofibers for Enhanced Na Storage.
PG  - e2107890
LID - 10.1002/smll.202107890 [doi]
AB  - Layered titanates are of great potential for hybrid Na-ion capacitors (NICs). 
      However, the poor conductivity and sluggish reaction kinetics are the critical 
      issues for the practical applications of titanates. Herein, an approach to 
      synthesize magnesium titanate hierarchical hollow spheres embedded in carbon 
      nanofibers (denoted as MTO@C) by electrospinning coupled with interlayer 
      engineering processes is reported. 3D conductive carbon framework helps to 
      enhance the electronic conductivity for binder-free electrode, while the expanded 
      interlayer spacing of titanate hierarchical hollow spheres via the incorporation 
      of Mg(2+) ions help to reduce the charge transfer resistance and expose more 
      active sites for Na storage. The interconnected hollow spheres can effectively 
      accommodate the volume expansion during the repeated cycles. The results have 
      shown that the MTO@C electrode can deliver a high capacity of 136 mAh g(-1) at 
      1 A g(-1) with long lifespan. The assembled NIC device with MTO@C as anode and 
      active carbon as cathode produces a high energy density of 110.3 Wh kg(-1) at 
      112 W kg-(1) and a high power density of 5380 W kg(-1) at 41.9 Wh kg(-1) , 
      together with a high capacity retention of 80% after 5000 cycles.
CI  - (c) 2022 Wiley-VCH GmbH.
FAU - Chen, Chong
AU  - Chen C
AD  - State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical 
      Technology, Beijing, 100029, P. R. China.
FAU - Li, Nian Wu
AU  - Li NW
AD  - State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical 
      Technology, Beijing, 100029, P. R. China.
FAU - Zhang, Xin Yu
AU  - Zhang XY
AD  - State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical 
      Technology, Beijing, 100029, P. R. China.
FAU - Zhang, Cai Hong
AU  - Zhang CH
AD  - State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical 
      Technology, Beijing, 100029, P. R. China.
FAU - Qiu, Jieshan
AU  - Qiu J
AD  - School of Chemical Engineering, Beijing University of Chemical Technology, 
      Beijing, 100029, P. R. China.
FAU - Yu, Le
AU  - Yu L
AUID- ORCID: 0000-0003-1227-1273
AD  - State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical 
      Technology, Beijing, 100029, P. R. China.
LA  - eng
GR  - 51902016/National Natural Science Foundation of China/
GR  - 21975015/National Natural Science Foundation of China/
GR  - buctrc201829/Fundamental Research Funds for the Central Universities/
GR  - buctrc201904/Fundamental Research Funds for the Central Universities/
PT  - Journal Article
DEP - 20220226
PL  - Germany
TA  - Small
JT  - Small (Weinheim an der Bergstrasse, Germany)
JID - 101235338
SB  - IM
OTO - NOTNLM
OT  - Na-ion capacitors
OT  - carbon
OT  - hollow
OT  - interlayer engineering
OT  - titanate
EDAT- 2022/02/27 06:00
MHDA- 2022/02/27 06:01
CRDT- 2022/02/26 08:36
PHST- 2022/01/25 00:00 [revised]
PHST- 2021/12/20 00:00 [received]
PHST- 2022/02/27 06:00 [pubmed]
PHST- 2022/02/27 06:01 [medline]
PHST- 2022/02/26 08:36 [entrez]
AID - 10.1002/smll.202107890 [doi]
PST - ppublish
SO  - Small. 2022 Apr;18(16):e2107890. doi: 10.1002/smll.202107890. Epub 2022 Feb 26.