ZnO quantum dot-decorated carbon nanofibers derived from electrospun ZIF-8/PVA nanofibers for high-performance energy storage electrodes

2017 ◽  
Vol 53 (83) ◽  
pp. 11441-11444 ◽  
Author(s):  
Gyeongseop Lee ◽  
Young Deok Seo ◽  
Jyongsik Jang
Keyword(s):  
Energy Storage ◽  
Quantum Dot ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Hybrid Structures ◽  
Electrochemical Performances ◽  
First Time ◽  
Zno Qds

We for the first time prepared hybrid structures of ZnO QDs@carbons and carbon nanofibers using electrospun MOF materials and evaluated their electrochemical performances.

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.

scholarly journals Preparation of Porous Carbon Nanofibers with Tailored Porosity for Electrochemical Capacitor Electrodes

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 729 ◽  
Author(s):  
Jisu Kim ◽  
Youn-Ji Heo ◽  
Jin-Yong Hong ◽  
Sung-Kon Kim
Keyword(s):  
Silica Nanoparticles ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
High Performance ◽  
Weight Ratio ◽  
Electrochemical Capacitor ◽  
Electrochemical Performances ◽  
Porous Carbon Electrodes ◽  
Charge Discharge

Porous carbon electrodes that accumulate charges at the electrode/electrolyte interface have been extensively investigated for use as electrochemical capacitor (EC) electrodes because of their great attributes for driving high-performance energy storage. Here, we report porous carbon nanofibers (p-CNFs) for EC electrodes made by the formation of a composite of monodisperse silica nanoparticles and polyacrylonitrile (PAN), oxidation/carbonization of the composite, and then silica etching. The pore features are controlled by changing the weight ratio of PAN to silica nanoparticles. The electrochemical performances of p-CNF as an electrode are estimated by measuring cyclic voltammetry and galvanostatic charge/discharge. Particularly, the p-CNF electrode shows exceptional areal capacitance (13 mF cm−2 at a current of 0.5 mA cm−2), good rate-retention capability (~98% retention of low-current capacitance), and long-term cycle stability for at least 5000 charge/discharge cycles. Based on the results, we believe that this electrode has potential for use as high-performance EC electrodes.

Direct laser writing of flexible planar supercapacitors based on GO and black phosphorus quantum dot nanocomposites

Nanoscale ◽  
2019 ◽  
Vol 11 (18) ◽  
pp. 9133-9140 ◽  
Author(s):  
Xiu-Yan Fu ◽  
Zhao-Di Chen ◽  
Yong-Lai Zhang ◽  
Dong-Dong Han ◽  
Jia-Nan Ma ◽  
...  
Keyword(s):  
Energy Storage ◽  
Quantum Dot ◽  
High Performance ◽  
Storage Systems ◽  
Black Phosphorus ◽  
Research Interest ◽  
Wearable Electronics ◽  
Direct Laser Writing ◽  
Energy Storage Systems ◽  
Direct Laser

The research interest in wearable electronics has continuously stimulated the development of flexible energy storage systems with high performance and robustness.

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.

Designing one-dimensional supercapacitors in a strip shape for high performance energy storage fabrics

2015 ◽  
Vol 3 (38) ◽  
pp. 19304-19309 ◽  
Author(s):  
Xunliang Cheng ◽  
Xin Fang ◽  
Peining Chen ◽  
Seok-Gwang Doo ◽  
In Hyuk Son ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrochemical Performances ◽  
One Dimensional ◽  
Strip Shape

Strip-shaped supercapacitors are created and further woven into a novel energy storage fabric with remarkable electrochemical performances.

scholarly journals Waxberry-Like Nanosphere Li4Mn5O12 as High Performance Electrode Materials for Supercapacitors

2018 ◽  
Vol 8 (3) ◽  
pp. 32
Author(s):  
Peiyuan Ji ◽  
Yi Xi ◽  
Chengshuang Zhang ◽  
Chuanshen Wang ◽  
Chenguo Hu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Diffusion Path ◽  
Electrochemical Performances ◽  
Wet Chemistry ◽  
First Time ◽  
Charge Discharge

Porous materials have superior electrochemical performance owing to its their structure, which could increase the specific and contact area with the electrode. The spinel Li4Mn5O12 has a three-dimensional tunnel structure for a better diffusion path, which has the advantage of lithium ion insertion and extraction in the framework. However, multi-space spherical materials with single morphologies are rarely studied. In this work, waxberry-like and raspberry-like nanospheres for Li4Mn5O12 have been fabricated by the wet chemistry and solid-state methods for the first time. The diameter of a single waxberry- and raspberry-like nanosphere is about 1 μm and 600 nm, respectively. The specific capacitance of Li4Mn5O12 was 535 mF cm−2 and 147.25 F g−1 at the scan rate of 2 mV s−1, and the energy density was 110.7 Wh kg−1, remaining at 70% after 5000th charge-discharge cycles. Compared with raspberry-like nanosphere Li4Mn5O12, the waxberry-like nanoporous spinel Li4Mn5O12 shows the better electrochemical performance and stability; furthermore, these electrochemical performances have been improved greatly compared to the previous studies. All these results indicate that the waxberry-like nanoporous spinel Li4Mn5O12 could provide a potential application in high performance supercapacitors.

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.

Micro/nanostructured TiNb2O7-related electrode materials for high-performance electrochemical energy storage: recent advances and future prospects

2020 ◽  
Vol 8 (36) ◽  
pp. 18425-18463
Author(s):  
Hongkang Wang ◽  
Ruifeng Qian ◽  
Yonghong Cheng ◽  
Hong-Hui Wu ◽  
Xianwen Wu ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Structural Engineering ◽  
Electrode Materials ◽  
Storage Systems ◽  
Electrochemical Energy Storage ◽  
Electrochemical Performances ◽  
Future Prospects ◽  
Engineering Material ◽  
Material Fabrication

This Review summarized the latest progress in structural engineering, material fabrication and enhancement of the electrochemical performances of micro/nanostructured TiNb2O7 and its analogues for high-performance energy storage systems.

scholarly journals Stable Low-Current Electrodeposition of α-MnO2 on Superaligned Electrospun Carbon Nanofibers for High-Performance Energy Storage

Small ◽  
2017 ◽  
Vol 14 (3) ◽  
pp. 1703237 ◽  
Author(s):  
Yiyang Liu ◽  
Zheng Zeng ◽  
Brian Bloom ◽  
David H. Waldeck ◽  
Jianjun Wei
Keyword(s):  
Energy Storage ◽  
Carbon Nanofibers ◽  
High Performance
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