PMID- 36922126
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230316
LR  - 20230315
IS  - 1089-7690 (Electronic)
IS  - 0021-9606 (Linking)
VI  - 158
IP  - 10
DP  - 2023 Mar 14
TI  - Vertical-MXene based micro-supercapacitors with thickness-independent 
      capacitance.
PG  - 104703
LID - 10.1063/5.0138097 [doi]
AB  - MXenes have shown great potential as an emerging two-dimensional (2D) material 
      for micro-supercapacitors (MSCs) due to their high conductivity, rich surface 
      chemistry, and high capacity. However, MXene sheets inherently tend to lay flat 
      on the substrate during film formation to assemble into compact stacked 
      structures, which hinders ion accessibility and prolongs ion transport paths, 
      leading to highly dependent electrochemical properties on the thickness of the 
      film. Here, we demonstrate a vertically aligned Ti(3)C(2)T(x) MXene based 
      micro-supercapacitor with an excellent electrochemical performance by a liquid 
      nitrogen-assisted freeze-drying method. The vertical arrangement of the 2D MXene 
      sheets allows for directional ion transport, enabling the vertical-MXene based 
      MSCs to exhibit thickness-independent electrochemical properties even in thick 
      films. In addition, the MSCs displayed a high areal capacitance of 87 mF cm(-2) 
      at 10 mV s(-1) along with an excellent stability of  approximately 87.4% after 10 000 
      charge-discharge cycles. Furthermore, the vertical-MXene approach proposed here 
      is scalable and can be extended to other systems involving directional transport.
FAU - Huang, Haichao
AU  - Huang H
AUID- ORCID: 0000-0002-7199-5282
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Xie, Yanting
AU  - Xie Y
AUID- ORCID: 0009-0002-8966-6302
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Xiong, Da
AU  - Xiong D
AUID- ORCID: 0000-0002-7042-324X
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Chen, Ningjun
AU  - Chen N
AUID- ORCID: 0009-0008-2974-3381
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Chu, Xiang
AU  - Chu X
AUID- ORCID: 0000-0002-9927-1323
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Jiang, Xinglin
AU  - Jiang X
AUID- ORCID: 0009-0000-0036-7628
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Zhang, Haitao
AU  - Zhang H
AUID- ORCID: 0000-0002-2057-7654
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
FAU - Yang, Weiqing
AU  - Yang W
AUID- ORCID: 0000-0001-8828-9862
AD  - Key Laboratory of Advanced Technologies of Materials (Ministry of Education), 
      School of Materials Science and Engineering, Southwest Jiaotong University, 
      Chengdu 610031, China.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Chem Phys
JT  - The Journal of chemical physics
JID - 0375360
SB  - IM
EDAT- 2023/03/16 06:00
MHDA- 2023/03/16 06:01
CRDT- 2023/03/15 22:02
PHST- 2023/03/15 22:02 [entrez]
PHST- 2023/03/16 06:00 [pubmed]
PHST- 2023/03/16 06:01 [medline]
AID - 10.1063/5.0138097 [doi]
PST - ppublish
SO  - J Chem Phys. 2023 Mar 14;158(10):104703. doi: 10.1063/5.0138097.