PMID- 37156144
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230525
LR  - 20230525
IS  - 1095-7103 (Electronic)
IS  - 0021-9797 (Linking)
VI  - 645
DP  - 2023 Sep
TI  - Aqueous MXene inks for inkjet-printing microsupercapacitors with ultrahigh energy 
      densities.
PG  - 359-370
LID - S0021-9797(23)00755-5 [pii]
LID - 10.1016/j.jcis.2023.04.155 [doi]
AB  - Although inkjet-printing technology has achieved significant development in 
      preparing scalable and adaptable energy storage devices for portable and micro 
      devices, searching for additive-free and environmentally friendly aqueous inks is 
      a significant challenge. Hence, an aqueous MXene/sodium alginate-Fe(2+) hybrid 
      ink (denoted as MXene/SA-Fe) with solution processability and suitable viscosity 
      is prepared for direct inkjet printing microsupercapacitors (MSCs). The SA 
      molecules are adsorbed on the surface of MXene nanosheets to construct 
      three-dimensional (3D) structures, thus effectively alleviating the two notorious 
      problems of oxidation and self-restacking of MXene. Concurrently, Fe(2+) ions can 
      compress the ineffective macropore volume and make the 3D structure more compact. 
      Moreover, the hydrogen and covalent bonding formed between the MXene nanosheet, 
      SA, and Fe(2+) effectively protects the oxidation of MXene and thus increases its 
      stability. Thus, the MXene/SA-Fe ink endows the inkjet-printed MSC electrode with 
      abundant active sites for ion storage and a highly conductive network for 
      electron transfer. As a demonstration, the MXene/SA-Fe ink is used to direct 
      inkjet-printed MSCs with an electrode spacing of 310 mum, which exhibit remarkable 
      capacitances of 123.8 mF cm(-2) (@5 mV s(-1)), good rate capability, an 
      extraordinary energy density of 8.44 muWh cm(-2) at a power density of 
      33.70 muW cm(-2), long-term cycling stability of 91.4 % capacitance retention 
      after 10,000 cycles, and surprising mechanical durability with 90.0 % of its 
      initial capacitance retained after 10,000 bending cycles. Therefore, MXene/SA-Fe 
      inks are expected to create various opportunities for printable electronics.
CI  - Copyright (c) 2023 Elsevier Inc. All rights reserved.
FAU - Wang, Guixin
AU  - Wang G
AD  - College of Engineering, Northeast Agricultural University, Harbin 150030, China.
FAU - Zhang, Rui
AU  - Zhang R
AD  - College of Resources and Environment, Northeast Agricultural University, Harbin 
      150030, China.
FAU - Zhang, Hongqiong
AU  - Zhang H
AD  - College of Engineering, Northeast Agricultural University, Harbin 150030, China. 
      Electronic address: zhanghqiong@163.com.
FAU - Cheng, Kui
AU  - Cheng K
AD  - College of Engineering, Northeast Agricultural University, Harbin 150030, China; 
      Heilongjiang International Joint Laboratory of Smart Soil between Northeast 
      Agricultural University and Max Planck Institute of Colloids and Interfaces 
      (NEAU-MPICI), Harbin 150030, China. Electronic address: chengkui@neau.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20230503
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
SB  - IM
OTO - NOTNLM
OT  - Flexible
OT  - Inkjet printing
OT  - Interface interactions
OT  - MXenes
OT  - Microsupercapacitors
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/05/09 00:42
MHDA- 2023/05/09 00:43
CRDT- 2023/05/08 18:06
PHST- 2023/02/21 00:00 [received]
PHST- 2023/04/27 00:00 [revised]
PHST- 2023/04/27 00:00 [accepted]
PHST- 2023/05/09 00:43 [medline]
PHST- 2023/05/09 00:42 [pubmed]
PHST- 2023/05/08 18:06 [entrez]
AID - S0021-9797(23)00755-5 [pii]
AID - 10.1016/j.jcis.2023.04.155 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2023 Sep;645:359-370. doi: 10.1016/j.jcis.2023.04.155. 
      Epub 2023 May 3.