The DOI matches its Crossref record; 56 of the 56 references it cites were found in a registry or an index.
Molecular-Level Heterostructures Assembled from Titanium Carbide MXene and Ni–Co–Al Layered Double-Hydroxide Nanosheets for All-Solid-State Flexible Asymmetric High-Energy Supercapacitors
Abstract
Unique layered Ti 3 C 2 /Ni–Co–Al layered double hydroxide (LDH) heterostructures alternatively stacked with molecular-level nanosheets are for the first time synthesized by a facile liquid-phase cofeeding and electrostatic attraction heteroassemble strategy between negatively charged Ti 3 C 2 and positively charged Ni–Co–Al-LDH nanosheets. The molecular-level Ti 3 C 2 /Ni–Co–Al-LDH heterostructures possessing the merits of both conductive and pseudocapacitive components can show greatly enhanced dynamic behavior in Faradaic reaction, which is significant for obtaining a high power density. Electrons penetrate in Ti 3 C 2 layers, while ions diffuse rapidly along two-dimensional galleries, displaying the shortest diffusion pathway and highest efficiency for charge transfer. The Ti 3 C 2 /Ni–Co–Al-LDH heterostructure exhibits a specific capacitance of 748.2 F g –1 at current density of 1 A g –1, showing an enhanced rate capacity. Importantly, a maximum energy density of 45.8 Wh kg –1 is obtained when Ti 3 C 2 /Ni–Co–Al-LDH acts as the positive electrode for an all-solid-state flexible asymmetric supercapacitor. The results indicate that molecular-level heterotructure is a promising candidate for future high-energy supercapacitors.
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“As shown, pristine MXene electrode showed two well defined redox peaks at ~0.28 V and ~0.56 V, which are ascribed to the change in valance state of titanium ions in alkaline (OH− ) media [55,82-84].”
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Metadata
- Authors
- Zhao, R., Wang, M., Zhao, D., Li, H., Wang, C., & Yin, L.
- Affiliations
- Shandong University (CN)
- Corresponding author
- Wang, Chengxiang
- Yin, Longwei
- Venue
- ACS Energy Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-12-11
- Volume
- 3
- Issue
- 1
- Pages
- 132-140
- ISSN
- 2380-8195 (ISSN-L)
- OpenAlex
- W2775223600
- Cited by
- 329
- References
- 56
- Citations by year
- 2026: 19 · 2025: 26 · 2024: 35 · 2023: 47 · 2022: 52 · 2021: 58 · 2020: 43 · 2019: 38 · 2018: 11
- FWCI
- 8.56
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Energy Letters (publishedVersion)
- Funders
- China Postdoctoral Science Foundation (2015M582088)
- Shandong University
- National Natural Science Foundation of China (51472148, 51532005, 51602181, 51272137)
- Tai Shan Scholar Foundation
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
- Physical Sciences › Materials Science › Materials Chemistry › MXene and MAX Phase Materials
- Physical Sciences › Materials Science › Materials Chemistry › Layered Double Hydroxides Synthesis and Applications
- Keywords
- Ti3C2 MXene, heterostructures, nanosheets, all-solid-state supercapacitors, asymmetric supercapacitor, flexible energy storage, electrostatic self-assembly, pseudocapacitance, faradaic reactions, energy density, specific capacitance, ion diffusion
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