Journal Article10.1002/CHEM.201800960
A Zinc Cobalt Sulfide Nanosheet Array Derived from a 2D Bimetallic Metal-Organic Frameworks for High-Performance Supercapacitors.
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TL;DR: Porous ternary metal sulfide integrated electrode materials with abundant electroactive sites and redox reactions are very promising for supercapacitors and thus as-synthesized Zn-Co-S/NF has great potential for practical applications.
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Abstract: Porous ternary metal sulfide integrated electrode materials with abundant electroactive sites and redox reactions are very promising for supercapacitors. Herein, a porous zinc cobalt sulfide nanosheet array on Ni foam (Zn-Co-S/NF) was constructed by facile growth of 2D bimetallic zinc/cobalt-based metal-organic framework (Zn/Co-MOF) nanosheets with leaf-like morphology on NF, followed by additional sulfurization. The Zn-Co-S/NF nanosheet array acted directly as a supercapacitor electrode showing much better electrochemical performance (2354.3 F g-1 and 88.6 % retention over 1000 cycles) when compared with zinc cobalt sulfide powder (355.3 F g-1 and 75.8 % retention over 1000 cycles), which originates from good electrical conductivity and mechanical stability, abundant electroactive sites, and facilitated transportation of electrons and electrolyte ions due to the unique nanosheet array structure. An asymmetric supercapacitor (ASC) device assembled from Zn-Co-S/NF and activated carbon electrodes can deliver a highest energy density of 31.9 Wh kg-1 and a maximum power density of 8.5 kW kg-1 . Most importantly, this ASC also shows good cycling stability (71.0 % retention over 10000 cycles). Furthermore, a red LED can be powered by two connected ASCs, and thus as-synthesized Zn-Co-S/NF has great potential for practical applications.
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Citations
Fabrication of Nanoneedle and Nanograss Array of Ni-Mixed CuCo2S4@Ni-Foam as Binder-Free Electrode Materials for High-Performance Supercapacitor Applications
Perumal NaveenKumar,Maniyazagan Munisamy,J. Yesuraj,K. Kim,G. Paruthimal Kalaignan,Wooseung Kang,Sun-Jae Kim +6 more
TL;DR: In this paper , the Ni-mixed CuCo2S4 materials were successfully prepared on Ni-Foam using the hydrothermal method followed by the sulfidation process.
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Multi-Active Sites Loaded NiCu-MOF@MWCNTs as a Bifunctional Electrocatalyst for Electrochemical Water Splitting Reaction.
Pavithra Suresh,Abirami Natarajan,Arulmozhi Rajaram +2 more
TL;DR: Multi-active sites loaded NiCu-MOF@MWCNTs exhibit exceptional bifunctional electrocatalytic performance for hydrogen and oxygen evolution reactions in alkaline media.
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Rapid Amorphization in MOF/Metal Selenite Nanocomposites for Enhanced Capacity in Supercapacitors.
TL;DR: In this paper , two MOF/metal selenite nanocomposites, Co-NH2-BDC/CoSeO3·H2O, are prepared on nickel foam through a facile two-step hydrothermal method, which inherit the 2D morphology and porosity properties of their MOF precursors.
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Amorphous V-doped Co3S4 yolk-shell hollow spheres derived from metal-organic framework for high-performance asymmetric supercapacitors
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TL;DR: In this paper , a novel amorphous vanadium doped Co 3 S 4 (V-CS) hollow sphere is synthesized through a facile method and the asymmetric supercapacitor is congregated by V-CS and AC electrodes.
10
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One-Step Electrodeposited Nickel Cobalt Sulfide Nanosheet Arrays for High-Performance Asymmetric Supercapacitors
TL;DR: An asymmetric supercapacitor fabricated by the ternary sulfide nanosheet arrays as positive electrode and porous graphene film as negative electrode demonstrates outstanding electrochemical performance for practical energy storage applications.
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Hollow Cobalt-Based Bimetallic Sulfide Polyhedra for Efficient All-pH-Value Electrochemical and Photocatalytic Hydrogen Evolution.
Zhen-Feng Huang,Jiajia Song,Ke Li,Muhammad Tahir,Yutong Wang,Lun Pan,Li Wang,Xiangwen Zhang,Ji-Jun Zou +8 more
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