Journal ArticleDOI
Phosphorization boosts the capacitance of mixed metal nanosheet arrays for high performance supercapacitor electrodes.
Yingying Lan,Hongyang Zhao,Yan Zong,Xinghua Li,Yong Sun,Juan Feng,Yan Wang,Xinliang Zheng,Yaping Du,Yaping Du +9 more
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TLDR
Taking the combined advantages of compositional features and array architectures, the nickel foam supported NiCoP nanosheet array (NiCoP@NF) electrode possesses superior electrochemical performance in comparison with Ni-Co LDH@NF and NiCoO2@NF electrodes.Abstract:
Binary transition metal phosphides hold immense potential as innovative electrode materials for constructing high-performance energy storage devices. Herein, porous binary nickel-cobalt phosphide (NiCoP) nanosheet arrays anchored on nickel foam (NF) were rationally designed as self-supported binder-free electrodes with high supercapacitance performance. Taking the combined advantages of compositional features and array architectures, the nickel foam supported NiCoP nanosheet array (NiCoP@NF) electrode possesses superior electrochemical performance in comparison with Ni-Co LDH@NF and NiCoO2@NF electrodes. The NiCoP@NF electrode shows an ultrahigh specific capacitance of 2143 F g-1 at 1 A g-1 and retained 1615 F g-1 even at 20 A g-1, showing excellent rate performance. Furthermore, a binder-free all-solid-state asymmetric supercapacitor device is designed, which exhibits a high energy density of 27 W h kg-1 at a power density of 647 W kg-1. The hierarchical binary nickel-cobalt phosphide nanosheet arrays hold great promise as advanced electrode materials for supercapacitors with high electrochemical performance.read more
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Nanostructured Transition Metal Oxides for Aqueous Hybrid Electrochemical Supercapacitors
TL;DR: In this paper, the authors present an overview of the research carried out in our laboratories with low-cost transition metal oxides (manganese dioxide, iron oxide and vanadium oxide) as active electrode materials for aqueous electrochemical supercapacitors.
Journal ArticleDOI
Homologous CoP/NiCoP Heterostructure on N-Doped Carbon for Highly Efficient and pH-Universal Hydrogen Evolution Electrocatalysis
Journal ArticleDOI
Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor
Yan Lin,Kaian Sun,Shoujie Liu,Xiaomeng Chen,Yuansheng Cheng,Weng-Chon Cheong,Zheng Chen,Lirong Zheng,Jun Zhang,Xiyou Li,Yuan Pan,Chen Chen +11 more
Journal ArticleDOI
Sea-urchin-like nickel–cobalt phosphide/phosphate composites as advanced battery materials for hybrid supercapacitors
Hai Chao Chen,Sipeng Jiang,Binghui Xu,Chenghao Huang,Yuzhen Hu,Yanliang Qin,Maoxia He,Haijie Cao +7 more
TL;DR: In this article, a sea-urchin-like bimetal nickel-cobalt phosphide/phosphate (NiCoP/POx) samples were first synthesized by a low-temperature phosphating method.
Journal ArticleDOI
Three-dimensional coral-like NiCoP@C@Ni(OH)2 core-shell nanoarrays as battery-type electrodes to enhance cycle stability and energy density for hybrid supercapacitors
TL;DR: In this paper, coral-like NiCoP@C@Ni(OH)2 core-shell nanoarrays are vertically grown on nickel foams using two-step hydrothermal reaction, followed by carbonization and phosphorization treatment.
References
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Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
Journal ArticleDOI
Nanostructured materials for advanced energy conversion and storage devices
Antonino S. Aricò,Peter G. Bruce,Bruno Scrosati,Jean-Marie Tarascon,Jean-Marie Tarascon,Walter van Schalkwijk +5 more
TL;DR: This review describes some recent developments in the discovery of nanoelectrolytes and nanoeLECTrodes for lithium batteries, fuel cells and supercapacitors and the advantages and disadvantages of the nanoscale in materials design for such devices.
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Electrochemical Capacitors for Energy Management
John R. Miller,Patrice Simon +1 more
TL;DR: Electrochemical capacitors enable rapid storage and efficient delivery of electrical energy in heavy-duty applications and are being enabled by electrochemical capacitor technology.
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Ultrathin mesoporous NiCo2O4 nanosheets supported on Ni foam as advanced electrodes for supercapacitors
Changzhou Yuan,Changzhou Yuan,Jiaoyang Li,Linrui Hou,Xiaogang Zhang,Laifa Shen,Xiong Wen David Lou +6 more
TL;DR: In this article, a facile two-step method is developed for large-scale growth of ultrathin mesoporous nickel cobaltite (NiCo2O4) nanosheets on conductive nickel foam with robust adhesion as a high-performance electrode for electrochemical capacitors.
Journal ArticleDOI
Highly active electrocatalysis of the hydrogen evolution reaction by cobalt phosphide nanoparticles.
TL;DR: The activity was essentially unchanged after 400 cyclic voltammetric sweeps, suggesting long-term viability under operating conditions, and CoP is amongst the most active, acid-stable, earth-abundant HER electrocatalysts reported to date.