Journal article
Electrochemical Activation of 2D MXene‐Based Hybrid for High Volumetric Mg‐Ion Storage Capacitance
Batteries & supercaps, v 3(4), pp 354-360
Apr 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Electrochemical capacitors are considered as a strong candidate of energy storage device due to their high power density and long cycle lifetime. However, commercial carbon‐based electrochemical capacitors provide only about 60 F cm−3 of volumetric capacitance due to low packing density and intrinsic areal capacitance. Two‐dimensional (2D) transition metal carbides/nitrides, known as MXenes, have received attention due to their high electronic conductivity, surface modification, and abilities to achieve superior ion intercalation and packing density. Here, we report the improved volumetric Mg‐ion storage capacitance of 2D MXene/reduced graphene oxide (rGO) hybrid through electrochemical activation. Along with high volumetric capacitance of 439 F cm−3 at 2 mV s−1, MXene/rGO hybrid electrode exhibits superior capacitive retention of 87 % after 10,000 cycles in aqueous Mg‐ion system. Thus, our hybrid electrode and electrochemical activation approach opens new avenues to store Mg and other multivalent ions for high volumetric capacitance of electrochemical capacitors.
Activated MXene: The volumetric Mg‐ion storage capacitance of 2D MXene/reduced graphene oxide hybrid is greatly improved through electrochemical activation, delivering high volumetric capacitance of 439 F cm−3 and capacitive retention of 87 % after 10,000 cycles in aqueous Mg‐ion system. Thus, our hybrid electrode and electrochemical activation approach opens new avenues to store Mg‐like multivalent ions for high volumetric capacitance of electrochemical capacitors.
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Details
- Title
- Electrochemical Activation of 2D MXene‐Based Hybrid for High Volumetric Mg‐Ion Storage Capacitance
- Creators
- Min Gyu Jung - Sungkyunkwan University, 2066, Seoburo, Jangan-guGirish Sambhaji Gund - Sungkyunkwan University, 2066, Seoburo, Jangan-guYury Gogotsi - Drexel UniversityHo Seok Park - Sungkyunkwan University, 2066, Seoburo, Jangan-gu
- Publication Details
- Batteries & supercaps, v 3(4), pp 354-360
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- National Research Foundation of Korea (NRF) Korea government (NRF-2018R1C1B6008599)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000512675900001
- Scopus ID
- 2-s2.0-85106274148
- Other Identifier
- 991014970031704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry
- Materials Science, Multidisciplinary