Details
| Original language | English |
|---|---|
| Pages (from-to) | 8720-8726 |
| Number of pages | 7 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 59 |
| Issue number | 22 |
| Early online date | 16 Feb 2020 |
| Publication status | Published - 15 May 2020 |
Abstract
Membrane-based reverse electrodialysis (RED) is considered as the most promising technique to harvest osmotic energy. However, the traditional membranes are limited by high internal resistance and low efficiency, resulting in undesirable power densities. Herein, we report the combination of oppositely charged Ti3C2Tx MXene membranes (MXMs) with confined 2D nanofluidic channels as high-performance osmotic power generators. The negatively or positively charged 2D MXene nanochannels exhibit typical surface-charge-governed ion transport and show excellent cation or anion selectivity. By mixing the artificial sea water (0.5 m NaCl) and river water (0.01 m NaCl), we obtain a maximum power density of ca. 4.6 Wm−2, higher than most of the state-of-the-art membrane-based osmotic power generators, and very close to the commercialization benchmark (5 Wm−2). Through connecting ten tandem MXM-RED stacks, the output voltage can reach up 1.66 V, which can directly power the electronic devices.
Keywords
- ion transport, membranes, MXene, nanofluidics, osmotic energy (blue energy)
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
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In: Angewandte Chemie - International Edition, Vol. 59, No. 22, 15.05.2020, p. 8720-8726.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Oppositely Charged Ti3C2Tx MXene Membranes with 2D Nanofluidic Channels for Osmotic Energy Harvesting
AU - Ding, Li
AU - Xiao, Dan
AU - Lu, Zong
AU - Deng, Junjie
AU - Wei, Yanying
AU - Caro, Jürgen
AU - Wang, Haihui
N1 - Funding Information: This work acknowledges the funding from the Natural Science Foundation of China (21861132013, 21536005, 51621001), NSFC-DFG (GZ-678); China Postdoctoral Science Foundation (2019TQ0101, 2019M662920).
PY - 2020/5/15
Y1 - 2020/5/15
N2 - Membrane-based reverse electrodialysis (RED) is considered as the most promising technique to harvest osmotic energy. However, the traditional membranes are limited by high internal resistance and low efficiency, resulting in undesirable power densities. Herein, we report the combination of oppositely charged Ti3C2Tx MXene membranes (MXMs) with confined 2D nanofluidic channels as high-performance osmotic power generators. The negatively or positively charged 2D MXene nanochannels exhibit typical surface-charge-governed ion transport and show excellent cation or anion selectivity. By mixing the artificial sea water (0.5 m NaCl) and river water (0.01 m NaCl), we obtain a maximum power density of ca. 4.6 Wm−2, higher than most of the state-of-the-art membrane-based osmotic power generators, and very close to the commercialization benchmark (5 Wm−2). Through connecting ten tandem MXM-RED stacks, the output voltage can reach up 1.66 V, which can directly power the electronic devices.
AB - Membrane-based reverse electrodialysis (RED) is considered as the most promising technique to harvest osmotic energy. However, the traditional membranes are limited by high internal resistance and low efficiency, resulting in undesirable power densities. Herein, we report the combination of oppositely charged Ti3C2Tx MXene membranes (MXMs) with confined 2D nanofluidic channels as high-performance osmotic power generators. The negatively or positively charged 2D MXene nanochannels exhibit typical surface-charge-governed ion transport and show excellent cation or anion selectivity. By mixing the artificial sea water (0.5 m NaCl) and river water (0.01 m NaCl), we obtain a maximum power density of ca. 4.6 Wm−2, higher than most of the state-of-the-art membrane-based osmotic power generators, and very close to the commercialization benchmark (5 Wm−2). Through connecting ten tandem MXM-RED stacks, the output voltage can reach up 1.66 V, which can directly power the electronic devices.
KW - ion transport
KW - membranes
KW - MXene
KW - nanofluidics
KW - osmotic energy (blue energy)
UR - http://www.scopus.com/inward/record.url?scp=85079722423&partnerID=8YFLogxK
U2 - 10.1002/anie.201915993
DO - 10.1002/anie.201915993
M3 - Article
C2 - 31950586
AN - SCOPUS:85079722423
VL - 59
SP - 8720
EP - 8726
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 22
ER -