TY - JOUR
T1 - Unveiling the redox electrochemistry of 1D, urchin-like vanadium sulfide electrodes for high-performance hybrid supercapacitors
AU - Karuppasamy, K.
AU - Vikraman, Dhanasekaran
AU - Hussain, Sajjad
AU - Thirumalraj, Balamurugan
AU - Santhoshkumar, P.
AU - Parangusan, Hemalatha
AU - Park, Hyun Chang
AU - Jung, Jongwan
AU - Kim, Hyun Seok
N1 - Publisher Copyright:
© 2023 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
PY - 2023/4
Y1 - 2023/4
N2 - Exploring novel versatile electrode materials with outstanding electrochemical performance is the key to the development of advanced energy conversion and storage devices. In this work, we aim to construct new-fangled one-dimensional (1D) quasi-layered patronite vanadium tetrasulfide (VS4) nanostructures by using different sulfur sources, namely thiourea, thioacetamide, and L-cysteine through an ethyleneaminetetraacetic-acid (EDTA)-mediated solvothermal process. The as-prepared VS4 exhibits several unique morphologies such as urchin, fluffy nanoflower, and polyhedron with appropriate surface areas. Among the prepared nanostructures, the VS4-1@NF nanostructure exhibited excellent electrochemical properties in 6 M KOH solution, and we explored its redox electrochemistry in detail. The as-prepared VS4-1@NF electrode exhibited battery-type redox characteristics with the highest capacity of 280 C g−1 in a three-electrode assembly. Moreover, it offered a capacity of 123 F g−1 in a hybrid two-electrode set-up at 1 A g−1 with the highest specific energy and specific power of 38.5 W h kg−1 and 750 W kg−1, respectively. Furthermore, to ensure the practical applicability and real-world performance of the prepared hybrid AC@NF//VS4-1@NF cell, we performed a cycling stability test with more than 5,000 galvanostatic charge–discharge cycles at 2 A g−1, and the cell retained around 84.7% of its capacitance even after 5,000 cycles with a CE of 96.1%.
AB - Exploring novel versatile electrode materials with outstanding electrochemical performance is the key to the development of advanced energy conversion and storage devices. In this work, we aim to construct new-fangled one-dimensional (1D) quasi-layered patronite vanadium tetrasulfide (VS4) nanostructures by using different sulfur sources, namely thiourea, thioacetamide, and L-cysteine through an ethyleneaminetetraacetic-acid (EDTA)-mediated solvothermal process. The as-prepared VS4 exhibits several unique morphologies such as urchin, fluffy nanoflower, and polyhedron with appropriate surface areas. Among the prepared nanostructures, the VS4-1@NF nanostructure exhibited excellent electrochemical properties in 6 M KOH solution, and we explored its redox electrochemistry in detail. The as-prepared VS4-1@NF electrode exhibited battery-type redox characteristics with the highest capacity of 280 C g−1 in a three-electrode assembly. Moreover, it offered a capacity of 123 F g−1 in a hybrid two-electrode set-up at 1 A g−1 with the highest specific energy and specific power of 38.5 W h kg−1 and 750 W kg−1, respectively. Furthermore, to ensure the practical applicability and real-world performance of the prepared hybrid AC@NF//VS4-1@NF cell, we performed a cycling stability test with more than 5,000 galvanostatic charge–discharge cycles at 2 A g−1, and the cell retained around 84.7% of its capacitance even after 5,000 cycles with a CE of 96.1%.
KW - 1D material
KW - Mesoporous
KW - Patronite
KW - Redox electrochemistry
KW - Urchin VS
UR - http://www.scopus.com/inward/record.url?scp=85148376183&partnerID=8YFLogxK
U2 - 10.1016/j.jechem.2023.01.005
DO - 10.1016/j.jechem.2023.01.005
M3 - Article
AN - SCOPUS:85148376183
SN - 2095-4956
VL - 79
SP - 569
EP - 580
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
ER -