Stable Ti3C2Tx MXene–Boron Nitride Membranes with Low Internal Resistance for Enhanced Salinity Gradient Energy Harvesting

Yang, Guoliang; Liú, Dan; Chen, Cheng; Qian, Yijun; Su, Yuyu; Qin, Si; Zhang, Liangzhu; Wang, Xungai; Sun, Lu; Lei, Weiwei

doi:10.1021/acsnano.0c09845

Cited by 147 publications

(119 citation statements)

References 60 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, in order to output high voltages for powering the electronic devices, a tandem of the GO/ANF membranes stacks is fabricated. 43,44 The output voltages increase linearly with cell numbers (Figure 4d). An ensemble of the composite membranes in series can offer a voltage up to 1.61 V, which can power the electronic devices (inset of Figure 4d).…”

Section: ■ Results and Discussionmentioning

confidence: 97%

Biomimetic Nanocomposite Membranes with Ultrahigh Ion Selectivity for Osmotic Power Conversion

et al. 2021

View full text Add to dashboard Cite

Ion transport in nanoconfinement exhibits significant features such as ionic rectification, ionic selectivity, and ionic gating properties, leading to the potential applications in desalination, water treatment, and energy conversion. Two-dimensional nanofluidics provide platforms to utilize this phenomenon for capturing osmotic energy. However, it is challenging to further improve the power output with inadequate charge density. Here we demonstrate a feasible strategy by employing Kevlar nanofiber as space charge donor and cross-linker to fabricate graphene oxide composite membranes. The coupling of space charge and surface charge, enabled by the stabilization of interlayer spacing, plays a key role in realizing high ion selectivity and the derived high-performance osmotic power conversion up to 5.06 W/m 2 . Furthermore, the output voltage of an ensemble of the membranes in series could reach 1.61 V, which can power electronic devices. The system contributes a further step toward the application of energy conversion.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 97%

Biomimetic Nanocomposite Membranes with Ultrahigh Ion Selectivity for Osmotic Power Conversion

et al. 2021

View full text Add to dashboard Cite

show abstract

“…To improve the power generation performance, an efficient method is to introduce other functional materials (e.g., boron nitride nanosheets, [91] aramid nanofibers [92] ) to the MXene membrane. Zhang et al reported MXene/aramid nanofiber composites membrane for salinity-gradient energy harvesting (Figure 7d), [92] since aramid (also known as Kevlar) is one of the strongest synthetic polymer materials and could form strong hydrogen bond with MXenes due to its rich acylamino groups.…”

Section: Salinity-gradient Energymentioning

confidence: 99%

MXenes for Energy Harvesting

et al. 2022

View full text Add to dashboard Cite

Energy harvesting modules play an increasingly important role in the development of autonomous self‐powered microelectronic devices. MXenes (i.e., 2D transition metal carbide/nitride) have recently emerged as promising candidates for energy applications due to their excellent electronic conductivity, large specific surface area, and tunable properties. Herein, a perspective on using MXenes to harvest energy from various sources in the environment is presented. First, the characteristics of MXenes that facilitate energy capturing are systematically introduced and the preparation strategies of MXenes and their derived nanostructures tailored toward such applications are summarized. Subsequently, the harvesting mechanism of different energy sources (e.g., solar energy, thermoelectric energy, triboelectric energy, piezoelectric energy, salinity‐gradient energy, electrokinetic energy, ultrasound energy, and humidity energy) are discussed. Then, the recent progress of MXene‐based nanostructures in energy harvesting, as well as their applications, is introduced. Finally, opinions on the existing challenges and future directions of MXene‐based nanostructure for energy harvesting are presented.

show abstract

“…MXene nanosheets have abundant surface groups (such as −F, −OH, and −O) that exhibit outstanding water dispersity and high surface charge density [ 77 , 78 , 79 , 80 ]. To address the challenges of the low stability, high internal resistance, and low selectivity of conventional membranes, Yang et al utilized a Ti 3 C 2 T x MXene/boron nitride (MXBN) membrane for boosting the salinity gradient energy conversion as the addition of BN into a pristine MXene membrane remarkably reduces the internal resistance and thereby, significantly increases the output power density [ 53 ]. Furthermore, Ti 3 C 2 T x MXene membranes have been shown to harness the osmotic energy effectively as their subnanometer ion-selective channels facilitate the preferential cation exchange regulated with the modified surface terminal groups controlled via the salinity gradient.…”

Section: Miniaturized Sge Devicesmentioning

confidence: 99%

Miniaturized Salinity Gradient Energy Harvesting Devices

et al. 2021

View full text Add to dashboard Cite

Harvesting salinity gradient energy, also known as “osmotic energy” or “blue energy”, generated from the free energy mixing of seawater and fresh river water provides a renewable and sustainable alternative for circumventing the recent upsurge in global energy consumption. The osmotic pressure resulting from mixing water streams with different salinities can be converted into electrical energy driven by a potential difference or ionic gradients. Reversed-electrodialysis (RED) has become more prominent among the conventional membrane-based separation methodologies due to its higher energy efficiency and lesser susceptibility to membrane fouling than pressure-retarded osmosis (PRO). However, the ion-exchange membranes used for RED systems often encounter limitations while adapting to a real-world system due to their limited pore sizes and internal resistance. The worldwide demand for clean energy production has reinvigorated the interest in salinity gradient energy conversion. In addition to the large energy conversion devices, the miniaturized devices used for powering a portable or wearable micro-device have attracted much attention. This review provides insights into developing miniaturized salinity gradient energy harvesting devices and recent advances in the membranes designed for optimized osmotic power extraction. Furthermore, we present various applications utilizing the salinity gradient energy conversion.

show abstract

Stable Ti₃C₂T_x MXene–Boron Nitride Membranes with Low Internal Resistance for Enhanced Salinity Gradient Energy Harvesting

Cited by 147 publications

References 60 publications

Biomimetic Nanocomposite Membranes with Ultrahigh Ion Selectivity for Osmotic Power Conversion

Biomimetic Nanocomposite Membranes with Ultrahigh Ion Selectivity for Osmotic Power Conversion

MXenes for Energy Harvesting

Miniaturized Salinity Gradient Energy Harvesting Devices

Contact Info

Product

Resources

About