scholarly journals Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 1033 ◽  
Author(s):  
Jia Yi Dong ◽  
Jin Cheng Xu ◽  
Kwun Nam Hui ◽  
Ye Yang ◽  
Shi Chen Su ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
High Performance ◽  
Hydrothermal Process ◽  
Specific Capacity ◽  
Active Surface ◽  
Nanowire Arrays ◽  
Electrochemical Performances ◽  
Nickel Substrate ◽  
Surface Areas

Here, we report the extraordinary electrochemical energy storage capability of NiMoO4@NiMoO4 homogeneous hierarchical nanosheet-on-nanowire arrays (SOWAs), synthesized on nickel substrate by a two-stage hydrothermal process. Comparatively speaking, the SOWAs electrode displays superior electrochemical performances over the pure NiMoO4 nanowire arrays. Such improvements can be ascribed to the characteristic homogeneous hierarchical structure, which not only effectively increases the active surface areas for fast charge transfer, but also reduces the electrode resistance significantly by eliminating the potential barrier at the nanowire/nanosheet junction, an issue usually seen in other reported heterogeneous architectures. We further evaluate the performances of the SOWAs by constructing an asymmetric hybrid supercapacitor (ASC) with the SOWAs and activated carbon (AC). The optimized ASC shows excellent electrochemical performances with 47.2 Wh/kg in energy density of 1.38 kW/kg at 0–1.2 V. Moreover, the specific capacity retention can be as high as 91.4% after 4000 cycles, illustrating the remarkable cycling stability of the NiMoO4@NiMoO4//AC ASC device. Our results show that this unique NiMoO4@NiMoO4 SOWA has great prospects for future energy storage applications.

Porous Activity of Biomass-Activated Carbon Enhanced by Nitrogen-Dopant Towards High-Performance Lithium Ion Hybrid Battery-Supercapacitor

2021 ◽  
Author(s):  
Juan Yu ◽  
Xuyang Wang ◽  
Jiaxin Peng ◽  
Xuefeng Jia ◽  
Linbo Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Pore Structure ◽  
High Performance ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Utilization Efficiency ◽  
Energy Storage Devices ◽  
Storage Devices

Abstract Biomass-activated carbon materials are promising electrode materials for lithium-ion hybrid capacitors (LiCs) because of their natural hierarchical pore structure. The efficient utilization of structural pores in activated carbon is very important for their electrochemical performance. Herein, porous biomass-activated carbon (PAC) with large specific surface area was prepared using a one-step activation method with biomass waste as the carbon source and ZnCl2 as the activator. To further improve its pore structure utilization efficiency, the PAC was doped with nitrogen using urea as the nitrogen source. The experimental results confirmed that PAC-1 with a high nitrogen doping level of 4.66% exhibited the most efficient pore utilization among all the samples investigated in this study. PAC-1 exhibited 92% capacity retention after 8000 cycles, showing good cycling stability. Then, to maximize the utilization of high-efficiency energy storage devices, LiNi0.8Co0.15Al0.05O2 (NCA), a promising cathode material for lithium-ion batteries with high specific capacity, was compounded with PAC-1 in different ratios to obtain NCA@PC composites. The NCA@PC-9 composite exhibited excellent capacitance in LiCs and an energy density of 210.9 Wh kg-1 at a high power density of 13.3 kW kg-1. These results provide guidelines for the design of high-performance and low-cost energy storage devices.

scholarly journals Lavender-like cobalt hydroxide nanoflakes deposited on nickel nanowire arrays for high-performance supercapacitors

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17263-17271 ◽  
Author(s):  
Jie Liao ◽  
Xuanyu Wang ◽  
Yang Wang ◽  
Songyang Su ◽  
Adeela Nairan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
High Performance ◽  
Nanowire Arrays ◽  
Cobalt Hydroxide ◽  
Flexible Supercapacitor ◽  
Nickel Nanowire ◽  
Storage Ability

Co(OH)2 nanoflakes deposited on nickel nanowire arrays with a lavender-like architecture are prepared. Using it as cathode and activated carbon as anode, the flexible supercapacitor shows superior energy storage ability.

scholarly journals The Progress of Cobalt-Based Anode Materials for Lithium Ion Batteries and Sodium Ion Batteries

2020 ◽  
Vol 10 (9) ◽  
pp. 3098 ◽  
Author(s):  
Yaohui Zhang ◽  
Nana Wang ◽  
Zhongchao Bai
Keyword(s):  
Energy Storage ◽  
Anode Materials ◽  
High Performance ◽  
Large Scale ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries ◽  
Preparation Methods

Limited by the development of energy storage technology, the utilization ratio of renewable energy is still at a low level. Lithium/sodium ion batteries (LIBs/SIBs) with high-performance electrochemical performances, such as large-scale energy storage, low costs and high security, are expected to improve the above situation. Currently, developing anode materials with better electrochemical performances is the main obstacle to the development of LIBs/SIBs. Recently, a variety of studies have focused on cobalt-based anode materials applied for LIBs/SIBs, owing to their high theoretical specific capacity. This review systematically summarizes the recent status of cobalt-based anode materials in LIBs/SIBs, including Li+/Na+ storage mechanisms, preparation methods, applications and strategies to improve the electrochemical performance of cobalt-based anode materials. Furthermore, the current challenges and prospects are also discussed in this review. Benefitting from these results, cobalt-based materials can be the next-generation anode for LIBs/SIBs.

The growth and assembly of the multidimensional hierarchical Ni3S2 for aqueous asymmetric supercapacitors

CrystEngComm ◽  
2015 ◽  
Vol 17 (24) ◽  
pp. 4495-4501 ◽  
Author(s):  
Bin Yang ◽  
Lei Yu ◽  
Qi Liu ◽  
Jingyuan Liu ◽  
Wanlu Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Hydrothermal Process ◽  
Nanorod Arrays ◽  
Asymmetric Supercapacitors ◽  
One Step ◽  
Step Growth

We synthesized the mushroom-like Ni3S2 with step by step growth that is the thin film growing on the nanorod arrays with one-step hydrothermal process, which is a novel ways to fabricate the multidimensional hierarchical electrode materials for high performance energy storage.

High-performance supercapacitor energy storage using a carbon material derived from lignin by bacterial activation before carbonization

2019 ◽  
Vol 7 (47) ◽  
pp. 26838-26848 ◽  
Author(s):  
Kejing Zhang ◽  
Mingren Liu ◽  
Tingzheng Zhang ◽  
Xiaoye Min ◽  
Zhongren Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Carbon Material ◽  
High Performance ◽  
Activation Method ◽  
Electrochemical Performances ◽  
Supercapacitor Energy Storage

A novel green bacterial activation method for the synthesis of a lignin derived carbon material with excellent electrochemical performances.

Hierarchical nickel nanowire@NiCo2S4 nanowhisker composite arrays with a test-tube-brush-like structure for high-performance supercapacitors

2018 ◽  
Vol 6 (31) ◽  
pp. 15284-15293 ◽  
Author(s):  
Jie Liao ◽  
Peichao Zou ◽  
Songyang Su ◽  
Adeela Nairan ◽  
Yang Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Cathode Materials ◽  
High Performance ◽  
State Of The Art ◽  
Test Tube ◽  
Asymmetric Supercapacitor ◽  
Storage Performance ◽  
Array Electrode ◽  
Nickel Nanowire

An asymmetric supercapacitor consisting of a NiCo2S4 nanowhisker-array electrode and activated carbon shows state-of-the-art energy storage performance for NiCo2S4-based cathode materials at the device level.

scholarly journals Designing ionic channels in novel carbons for electrochemical energy storage

2019 ◽  
Vol 7 (1) ◽  
pp. 191-201 ◽  
Author(s):  
Jianglin Ye ◽  
Patrice Simon ◽  
Yanwu Zhu
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Ionic Channels ◽  
Carbon Electrodes ◽  
Design Strategies ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Surface Areas ◽  
Electrochemical Electrodes ◽  
Supporting Materials

Abstract Tremendous efforts have been dedicated to developing high-performance energy storage devices based on the micro- or nano-manipulation of novel carbon electrodes, as certain nanocarbons are perceived to have advantages such as high specific surface areas, superior electric conductivities, excellent mechanical properties and so on. In typical electrochemical electrodes, ions are intercalated/deintercalated into/from the bulk (for batteries) or adsorbed/desorbed on/from the surface (for electrochemical capacitors). Fast ionic transport, significantly determined by ionic channels in active electrodes or supporting materials, is a prerequisite for the efficient energy storage with carbons. In this report, we summarize recent design strategies for ionic channels in novel carbons and give comments on the promising features based on those carbons towards tailorable ionic channels.

scholarly journals Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2263 ◽  
Author(s):  
Xiaoning Wang ◽  
Dan Wu ◽  
Xinhui Song ◽  
Wei Du ◽  
Xiangjin Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
Active Sites ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Chemical Properties ◽  
Combine Carbon

Polyaniline has been widely used in high-performance pseudocapacitors, due to its low cost, easy synthesis, and high theoretical specific capacitance. However, the poor mechanical properties of polyaniline restrict its further development. Compared with polyaniline, functionalized carbon materials have excellent physical and chemical properties, such as porous structures, excellent specific surface area, good conductivity, and accessibility to active sites. However, it should not be neglected that the specific capacity of carbon materials is usually unsatisfactory. There is an effective strategy to combine carbon materials with polyaniline by a hybridization approach to achieve a positive synergistic effect. After that, the energy storage performance of carbon/polyaniline hybridization material has been significantly improved, making it a promising and important electrode material for supercapacitors. To date, significant progress has been made in the synthesis of various carbon/polyaniline binary composite electrode materials. In this review, the corresponding properties and applications of polyaniline and carbon hybrid materials in the energy storage field are briefly reviewed. According to the classification of different types of functionalized carbon materials, this article focuses on the recent progress in carbon/polyaniline hybrid materials, and further analyzes their corresponding properties to provide guidance for the design, synthesis, and component optimization for high-performance supercapacitors.

Silicon Nanosheets Derived from Silicate Minerals: Controllable Synthesis and Energy Storage Application

Nanoscale ◽  
2021 ◽  
Author(s):  
Yuanqing He ◽  
Zihan Zhang ◽  
Gen Chen ◽  
Ying Zhang ◽  
Xiaohe Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Specific Capacity ◽  
Energy Storage Materials ◽  
Controllable Synthesis ◽  
High Specific Capacity ◽  
Silicate Minerals ◽  
Storage Materials ◽  
Energy Storage Application ◽  
Crucial Part

Silicon is a crucial part in developing high-performance energy storage materials, owing to a high specific capacity as compared to carbon. Moreover, nanoscale silicon is beneficial to reduce its inherent...

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