TY - JOUR
T1 - Layer-by-layer nanohybrids of Ni-Cr-LDH intercalated with 0D polyoxotungstate for highly efficient hybrid supercapacitor
AU - Padalkar, Navnath S.
AU - Sadavar, Shrikant V.
AU - Shinde, Rohini B.
AU - Patil, Akash S.
AU - Patil, Umakant M.
AU - Dhawale, Dattatray S.
AU - Bulakhe, Ravindra N.
AU - Kim, Hyungsang
AU - Im, Hyunsik
AU - Vinu, Ajayan
AU - Lokhande, Chandrakant D.
AU - Gunjakar, Jayavant L.
N1 - Publisher Copyright:
© 2022 Elsevier Inc.
PY - 2022/6/15
Y1 - 2022/6/15
N2 - The layer-by-layer mesoporous nanohybrids of Ni-Cr-layered double hydroxide (Ni-Cr-LDH) and polyoxotungstate nanoclusters (Ni-Cr-LDH-POW) are prepared via exfoliation reassembling strategy. The intercalative hybridization of Ni-Cr-LDH with POW nanoclusters leads to forming a layer-by-layer stacking framework with significant expansion of the interplanar spacing and surface area. The aqueous hybrid supercapacitor (AHSC) and all-solid-state hybrid supercapacitor (SSHSC) devices are fabricated using Ni-Cr-LDH-POW nanohybrid as a cathode and reduced graphene oxide (rGO) as an anode material. Notably, the NCW-2//rGO AHSC device delivers an ED of 43 Wh kg−1 at PD of 1.33 kW kg−1 and excellent electrochemical stability over 10,000 charge–discharge cycles. Moreover, NCW-2//rGO SSHSC exhibits an ED of 34 Wh kg−1 at PD of 1.32 kW kg−1 with capacitance retention of 86% after 10,000 cycles. These results highlight the excellent electrochemical functionality and advantages of the Ni-Cr-LDH-POW nanohybrids as a cathode for hybrid supercapacitors.
AB - The layer-by-layer mesoporous nanohybrids of Ni-Cr-layered double hydroxide (Ni-Cr-LDH) and polyoxotungstate nanoclusters (Ni-Cr-LDH-POW) are prepared via exfoliation reassembling strategy. The intercalative hybridization of Ni-Cr-LDH with POW nanoclusters leads to forming a layer-by-layer stacking framework with significant expansion of the interplanar spacing and surface area. The aqueous hybrid supercapacitor (AHSC) and all-solid-state hybrid supercapacitor (SSHSC) devices are fabricated using Ni-Cr-LDH-POW nanohybrid as a cathode and reduced graphene oxide (rGO) as an anode material. Notably, the NCW-2//rGO AHSC device delivers an ED of 43 Wh kg−1 at PD of 1.33 kW kg−1 and excellent electrochemical stability over 10,000 charge–discharge cycles. Moreover, NCW-2//rGO SSHSC exhibits an ED of 34 Wh kg−1 at PD of 1.32 kW kg−1 with capacitance retention of 86% after 10,000 cycles. These results highlight the excellent electrochemical functionality and advantages of the Ni-Cr-LDH-POW nanohybrids as a cathode for hybrid supercapacitors.
KW - 0D Polyoxotungstate
KW - 2D Ni-Cr-LDH
KW - Hybrid supercapacitor
KW - Intercalation
KW - Nanohybrids
UR - http://www.scopus.com/inward/record.url?scp=85125272481&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2022.02.091
DO - 10.1016/j.jcis.2022.02.091
M3 - Article
C2 - 35228050
AN - SCOPUS:85125272481
SN - 0021-9797
VL - 616
SP - 548
EP - 559
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -