Journal article
Enhanced Rate Capability of Ion‐Accessible Ti3C2Tx‐NbN Hybrid Electrodes
Advanced energy materials, v 10(35), pn/a
15 Sep 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Although 2D Ti3C2Tx is a good candidate for supercapacitors, the restacking of nanosheets hinders the ion transport significantly at high scan rates, especially under practical mass loading (>10 mg cm−2) and thickness (tens of microns). Here, Ti3C2Tx‐NbN hybrid film is designed by self‐assembling Ti3C2Tx with 2D arrays of NbN nanocrystals. Working as an interlayer spacer of Ti3C2Tx, NbN facilitates the ion penetration through its 2D porous structure; even at extremely high scan rates. The hybrid film shows a thickness‐independent rate performance (almost the same rate capabilities from 2 to 20 000 mV s−1) for 3 and 50 µm thick electrodes. Even a 109 µm thick Ti3C2Tx‐NbN electrode shows a better rate performance than 25 µm thick pure Ti3C2Tx electrodes. This method may pave a way to controlling ion transport in electrodes composed of 2D conductive materials, which have potential applications in high‐rate energy storage and beyond.
A hybrid electrode of Ti3C2Tx flakes and 2D arrays of NbN nanocrystals shows a thickness‐independent rate performance (≈13% capacitance retention from 2 to 20 000 mV s−1) for 3 and 50 µm thick electrodes. The symmetric device assembled using two 50 µm Ti3C2Tx‐NbN‐0.5 hybrid films delivers an energy density of 23.1 Wh L−1 at a power density of 1.0 kW L−1.
Metrics
Details
- Title
- Enhanced Rate Capability of Ion‐Accessible Ti3C2Tx‐NbN Hybrid Electrodes
- Creators
- Hao Wang - Soochow UniversityJianmin Li - Drexel UniversityXiaoxiao Kuai - Soochow UniversityLiangmin Bu - Soochow UniversityLijun Gao - Soochow UniversityXu Xiao - Drexel UniversityYury Gogotsi - Drexel University
- Publication Details
- Advanced energy materials, v 10(35), pn/a
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
- Energy Frontier Research Center Basic Energy Sciences Fluid Interface Reactions, Structures and Transport China Scholarship Council (201706920081) National Natural Science Foundation of China (U1401248) U.S. Department of Energy Office of Science
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000553020400001
- Scopus ID
- 2-s2.0-85088439708
- Other Identifier
- 991014970144904721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter