Journal ArticleDOI
Phosphate Ion Functionalized Co3 O4 Ultrathin Nanosheets with Greatly Improved Surface Reactivity for High Performance Pseudocapacitors.
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TLDR
The unique porous nanosheet morphology, high surface reactivity, and fast electrode kinetics of PCO are found to be responsible for the enhanced pseudocapacitive performance.Abstract:
A surface-modified Co3 O4 ultrathin nanosheet (denoted as PCO) is reported via controllable phosphate ion functionalization for pseudocapacitors. An energy density of 71.6 W h kg-1 (at 1500 W kg-1 ) is achieved by the PCO-based pseudocapacitor. The unique porous nanosheet morphology, high surface reactivity, and fast electrode kinetics of PCO are found to be responsible for the enhanced pseudocapacitive performance.read more
Citations
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Journal ArticleDOI
Filling the oxygen vacancies in Co3O4 with phosphorus: an ultra-efficient electrocatalyst for overall water splitting
Zhaohui Xiao,Yu Wang,Yu-Cheng Huang,Zengxi Wei,Chung-Li Dong,Jianmin Ma,Shaohua Shen,Yafei Li,Shuangyin Wang +8 more
TL;DR: In this paper, an electrocatalyst with excellent performance for both hydrogen evolution reaction and oxygen evolution reaction (OER) in water splitting was designed by filling the oxygen vacancies with heteroatoms in the VO-rich Co3O4.
Journal ArticleDOI
Recent Advances in Layered Ti 3 C 2 T x MXene for Electrochemical Energy Storage
TL;DR: This Review seeks to provide a rational and in-depth understanding of the relation between the electrochemical performance and the nanostructural/chemical composition of Ti3 C2 Tx, which will promote the further development of 2D MXenes in energy-storage applications.
Journal ArticleDOI
Oxygen-Vacancy and Surface Modulation of Ultrathin Nickel Cobaltite Nanosheets as a High-Energy Cathode for Advanced Zn-Ion Batteries.
TL;DR: The fabricated P-NiCo2 O4-x //Zn battery presents an impressive specific capacity of 361.3 mAh g-1 at the high current density and extremely high energy density and power density are achieved, which outperforms most of the previously reported aqueous Zn-ion batteries.
Journal ArticleDOI
A highly alkaline-stable metal oxide@metal-organic framework composite for high-performance electrochemical energy storage.
TL;DR: The design and synthesis of a highly alkaline-stable metal oxide@MOF composite, Co3O4 nanocube@Co-MOF (Co3O-Co- MOF) is presented, via a controllable and facile one-pot hydrothermal method underhighly alkaline conditions.
Journal ArticleDOI
Core–Shell Nitrogen-Doped Carbon Hollow Spheres/Co3O4 Nanosheets as Advanced Electrode for High-Performance Supercapacitor
TL;DR: The unique hierarchical Co3 O4 /NHCS core-shell structure with hierarchical structures is a promising electrode material for high-performance supercapacitors.
References
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Journal ArticleDOI
Where Do Batteries End and Supercapacitors Begin
TL;DR: Electrochemical measurements can distinguish between different types of energy storage materials and their underlying mechanisms, used to recover power in cars and electric mass transit vehicles that would otherwise lose braking energy as heat.
Journal ArticleDOI
Electrochemical capacitors: mechanism, materials, systems, characterization and applications
TL;DR: The latest progress in supercapacitors in charge storage mechanisms, electrode materials, electrolyte materials, systems, characterization methods, and applications are reviewed and the newly developed charge storage mechanism for intercalative pseudocapacitive behaviour is clarified for comparison.
Journal ArticleDOI
Metallic 1T phase MoS2 nanosheets as supercapacitor electrode materials
TL;DR: It is shown that chemically exfoliated nanosheets of MoS2 containing a high concentration of the metallic 1T phase can electrochemically intercalate ions with extraordinary efficiency and achieve capacitance values ranging from ∼400 to ∼700 F cm(-3) in a variety of aqueous electrolytes.
Journal ArticleDOI
Mixed transition-metal oxides: design, synthesis, and energy-related applications.
TL;DR: Recent research advances in the rational design and efficient synthesis of MTMOs with controlled shapes, sizes, compositions, and micro-/nanostructures are summarized, along with their applications as electrode materials for lithium-ion batteries and electrochemical capacitors, and efficient electrocatalysts for the oxygen reduction reaction in metal-air batteries and fuel cells.
Journal ArticleDOI
Advanced Asymmetric Supercapacitors Based on Ni(OH)2/Graphene and Porous Graphene Electrodes with High Energy Density
Jun Yan,Zhuangjun Fan,Wei Sun,Guoqing Ning,Tong Wei,Qiang Zhang,Rufan Zhang,Linjie Zhi,Fei Wei +8 more
TL;DR: In this paper, a high-voltage asymmetric supercapacitor is successfully fabricated using Ni(OH)2/graphene and porous graphene as the positive and negative electrodes, respectively.