TY - JOUR
T1 - Extrinsic pseudocapacitive ultrathin 2D MoS2 nanoflakes clamped on 1D Sb2S3 nanorods
T2 - an advanced heterostructured anode for high-energy ammonium ion hybrid capacitors
AU - Marje, Supriya J.
AU - Tyagaraj, Harshitha B.
AU - Hwang, Seung Kyu
AU - Ranjith, Kugalur Shanmugam
AU - Alhajri, Ebrahim
AU - Chodankar, Nilesh R.
AU - Huh, Yun Suk
AU - Han, Young Kyu
N1 - Publisher Copyright:
© 2024 The Royal Society of Chemistry.
PY - 2024
Y1 - 2024
N2 - Ammonium-ion (NH4+) charge carriers have recently been considered promising for electrochemical energy storage (EES) systems because of their high safety, low molar mass, and small hydrated radius (3.31 Å). However, finding a kinetically balanced anode and cathode combination for high NH4+-ion storage is challenging. Herein, a new approach for developing a heterostructured electrode was developed by constructing extrinsic pseudocapacitive 2D ultrathin MoS2 nanoflakes clamped on 1D Sb2S3 nanorods (MoS2/Sb2S3) as an anode for high-performance ammonium-ion hybrid capacitors (AIHCs) against the intrinsic pseudocapacitive MnO2 cathode. The engineered MoS2/Sb2S3 heterostructured anode facilitated large interlayer galleries owing to the presence of 2D MoS2 for facial NH4+-ion diffusion and provided a rapid electron pathway through 1D Sb2S3, which promoted a high capacitance of 360 F g−1, low resistance, and stable cycling performance. More importantly, the constructed AIHC delivered a superior energy density of 43.75 W h kg−1 at a power density of 600 W kg−1 and excellent cycling durability over 5000 cycles. These results show that a heterostructured extrinsic pseudocapacitive anode can improve the electrochemical parameters of NH4+ EES systems and replace traditional carbon-based anode materials.
AB - Ammonium-ion (NH4+) charge carriers have recently been considered promising for electrochemical energy storage (EES) systems because of their high safety, low molar mass, and small hydrated radius (3.31 Å). However, finding a kinetically balanced anode and cathode combination for high NH4+-ion storage is challenging. Herein, a new approach for developing a heterostructured electrode was developed by constructing extrinsic pseudocapacitive 2D ultrathin MoS2 nanoflakes clamped on 1D Sb2S3 nanorods (MoS2/Sb2S3) as an anode for high-performance ammonium-ion hybrid capacitors (AIHCs) against the intrinsic pseudocapacitive MnO2 cathode. The engineered MoS2/Sb2S3 heterostructured anode facilitated large interlayer galleries owing to the presence of 2D MoS2 for facial NH4+-ion diffusion and provided a rapid electron pathway through 1D Sb2S3, which promoted a high capacitance of 360 F g−1, low resistance, and stable cycling performance. More importantly, the constructed AIHC delivered a superior energy density of 43.75 W h kg−1 at a power density of 600 W kg−1 and excellent cycling durability over 5000 cycles. These results show that a heterostructured extrinsic pseudocapacitive anode can improve the electrochemical parameters of NH4+ EES systems and replace traditional carbon-based anode materials.
UR - http://www.scopus.com/inward/record.url?scp=85188215991&partnerID=8YFLogxK
U2 - 10.1039/d4ta00262h
DO - 10.1039/d4ta00262h
M3 - Article
AN - SCOPUS:85188215991
SN - 2050-7488
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
ER -