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Polypyrrole Nanotunnels with Luminal and Abluminal Layered Double Hydroxide Nanosheets Grown on a Carbon Cloth for Energy Storage Applications
journal contribution
posted on 2022-05-12, 17:10 authored by Prakash
Chandra Lohani, Arjun Prasad Tiwari, Kisan Chhetri, Alagan Muthurasu, Bipeen Dahal, Su-Hyeong Chae, Tae Hoon Ko, Jun Youb Lee, Yong Sik Chung, Hak Yong KimThe structural design of transition
metal-based electrode materials
with gigantic energy storage capabilities is a crucial task. In this
work, we report an assembly of thin layered double hydroxide (LDH)
nanosheets arrayed throughout the luminal and abluminal parts of polypyrrole
tunnels fastened onto both sides of a carbon cloth as a battery-type
energy storage system. Electron microscopy images reveal that the
resulting electrode (NiCo-LDH@H-PPy@CC, where H-PPy@CC represents
carbon cloth-supported hollow polypyrrole fibers) is constructed by
combining luminal and abluminal NiCo-LDH nanosheets onto a long polypyrrole
tunnel on a carbon cloth. The primary sample shows an excellent specific
capacity of 149.16 mAh g–1 at 1.0 mA cm–2, a remarkable rate capability of 80.45%, and comprehensive cyclic
stability (93.4%). The improved performance is mainly attributed to
the strategic organization of the electrode materials with superior
Brunauer–Emmett–Teller (BET) surface area and conductivity.
Moreover, an asymmetric supercapacitor device assembled with NiCo-LDH@H-PPy@CC
and vanadium phosphate-incorporated carbon nanofiber (VPO@CNFs900)
electrodes contributes a specific energy density of 32.42 Wh kg–1 at 3 mA cm–2 with a specific power
density of 359.16 W kg–1. When the current density
is increased by 6-fold, the specific power density reaches 1999.89
W kg–1 at a specific energy density of 20.06 Wh
kg–1. This is a simple, cost-effective, and convenient
synthetic strategy for the synthesis of porous nanosheet arrays assimilated
into hollow fiber architectures, which can illuminate the ideal approach
for the fabrication of novel materials with an immense potential for
energy storage.
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remarkable rate capabilityprimary sample showsnanosheets arrayed throughouthollow fiber architecturesexcellent specific capacityconvenient synthetic strategycomprehensive cyclic stability89 w kg42 wh kg16 w kg16 mah g06 wh kgspecific power densitylong polypyrrole tunnelincorporated carbon nanofiberspecific energy densityenergy storage applicationsldh nanosheets ontobased electrode materialsenergy storageelectrode materialscurrent densitypolypyrrole nanotunnelscarbon clothresulting electrodenovel materialsvanadium phosphatetransition metalsurface areastructural designstrategic organizationmainly attributedimproved performanceimmense potentialideal approachelectrodes contributescrucial taskabluminal parts45 %,4 %).