A new strategy for anchoring a functionalized graphene hydrogel in a carbon cloth network to support a lignosulfonate/polyaniline hydrogel as an integrated electrode for flexible high areal-capacitance supercapacitors

2019 ◽  
Vol 7 (10) ◽  
pp. 5819-5830 ◽  
Author(s):  
Dan Wu ◽  
Wenbin Zhong
Keyword(s):  
High Performance ◽  
High Mass ◽  
Carbon Cloth ◽  
Mass Loading ◽  
Functionalized Graphene ◽  
Interfacial Resistance ◽  
Areal Capacitance ◽  
New Strategy

Fully utilizing the space of CC allows achieving an electrode with high mass loading and low interfacial resistance for high-performance supercapacitors.

Carbon-coated TiNb2O7 nanosheet arrays as self-supported high mass-loading anode for flexible Li-ion battery

2021 ◽  
Author(s):  
Jinquan Zhou ◽  
Haoyang Dong ◽  
Yao Chen ◽  
yihua Ye ◽  
Liang Xiao ◽  
...  
Keyword(s):  
Diffusion Length ◽  
High Mass ◽  
Carbon Cloth ◽  
Mass Loading ◽  
Solvothermal Process ◽  
Li Ion Battery ◽  
Nanosheet Arrays ◽  
Carbon Coated ◽  
Li Ion ◽  
First Time

TiNb2O7 anode constructed with carbon-coated nanosheet arrays on carbon cloth is prepared by a facile solvothermal process and post carbon-coating for the first time. With nanosized diffusion-length and reduced polarization...

Direct growth of nickel terephthalate on Ni foam with large mass-loading for high-performance supercapacitors

2017 ◽  
Vol 5 (36) ◽  
pp. 19323-19332 ◽  
Author(s):  
Qiulin Chen ◽  
Shuijin Lei ◽  
Peiqin Deng ◽  
Xiuling Ou ◽  
Lianfu Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Large Mass ◽  
High Mass ◽  
Mass Loading ◽  
Ni Foam ◽  
Direct Growth

Nickel terephthalate is grown on Ni foam with high mass-loading and its electrochemical performance can be greatly enhanced by polyaniline electrodeposition.

scholarly journals Atomic Modulation of 3D Conductive Frameworks Boost Performance of MnO2 for Coaxial Fiber-Shaped Supercapacitors

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiaona Wang ◽  
Zhenyu Zhou ◽  
Zhijian Sun ◽  
Jinho Hah ◽  
Yagang Yao ◽  
...  
Keyword(s):  
Energy Density ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Superior Performance ◽  
High Mass ◽  
Mass Loading ◽  
Energy Storage Devices ◽  
Free Standing ◽  
Cell Potential

Abstract Coaxial fiber-shaped supercapacitors are a promising class of energy storage devices requiring high performance for flexible and miniature electronic devices. Yet, they are still struggling from inferior energy density, which comes from the limited choices in materials and structure used. Here, Zn-doped CuO nanowires were designed as 3D framework for aligned distributing high mass loading of MnO2 nanosheets. Zn could be introduced into the CuO crystal lattice to tune the covalency character and thus improve charge transport. The Zn–CuO@MnO2 as positive electrode obtained superior performance without sacrificing its areal and gravimetric capacitances with the increasing of mass loading of MnO2 due to 3D Zn–CuO framework enabling efficient electron transport. A novel category of free-standing asymmetric coaxial fiber-shaped supercapacitor based on Zn0.11CuO@MnO2 core electrode possesses superior specific capacitance and enhanced cell potential window. This asymmetric coaxial structure provides superior performance including higher capacity and better stability under deformation because of sufficient contact between the electrodes and electrolyte. Based on these advantages, the as-prepared asymmetric coaxial fiber-shaped supercapacitor exhibits a high specific capacitance of 296.6 mF cm−2 and energy density of 133.47 μWh cm−2. In addition, its capacitance retention reaches 76.57% after bending 10,000 times, which demonstrates as-prepared device’s excellent flexibility and long-term cycling stability.

scholarly journals Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenfu Xie ◽  
Jianming Li ◽  
Yuke Song ◽  
Shijin Li ◽  
Jianbo Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Power ◽  
High Performance ◽  
Rational Design ◽  
Specific Capacity ◽  
High Mass ◽  
Core Shell ◽  
High Power Density ◽  
Mass Loading

AbstractZinc–air batteries (ZABs) hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental friendliness. However, the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of electrocatalysts when assembly into a thick electrode with high mass loading. Herein, we report a hierarchical electrocatalyst based on carbon microtube@nanotube core–shell nanostructure (CMT@CNT), which demonstrates superior electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction with a small potential gap of 0.678 V. Remarkably, when being employed as air–cathode in ZAB, the CMT@CNT presents an excellent performance with a high power density (160.6 mW cm−2), specific capacity (781.7 mAhg Zn −1 ) as well as long cycle stability (117 h, 351 cycles). Moreover, the ZAB performance of CMT@CNT is maintained well even under high mass loading (3 mg cm−2, three times as much as traditional usage), which could afford high power density and energy density for advanced electronic equipment. We believe that this work is promising for the rational design of hierarchical structured electrocatalysts for advanced metal-air batteries.

High areal capacitance of vanadium oxides intercalated Ti3C2 MXene for flexible supercapacitors with high mass loading

2020 ◽  
Vol 31 (16) ◽  
pp. 165403 ◽  
Author(s):  
Zezhong Zhang ◽  
Miao Guo ◽  
Yanhong Tang ◽  
Chengbin Liu ◽  
Jian Zhou ◽  
...  
Keyword(s):  
Vanadium Oxides ◽  
High Mass ◽  
Mass Loading ◽  
Areal Capacitance ◽  
Flexible Supercapacitors

High mass loading of h-WO3 and α-MnO2 on flexible carbon cloth for high-energy aqueous asymmetric supercapacitor

2019 ◽  
Vol 299 ◽  
pp. 245-252 ◽  
Author(s):  
Su-Hyeon Ji ◽  
Nilesh R. Chodankar ◽  
Woo-Sung Jang ◽  
Do-Heyoung Kim
Keyword(s):  
High Energy ◽  
High Mass ◽  
Carbon Cloth ◽  
Asymmetric Supercapacitor ◽  
Mass Loading

scholarly journals CNT/High Mass Loading MnO2/Graphene-Grafted Carbon Cloth Electrodes for High-Energy Asymmetric Supercapacitors

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lulu Lyu ◽  
Kwang-dong Seong ◽  
Jong Min Kim ◽  
Wang Zhang ◽  
Xuanzhen Jin ◽  
...  
Keyword(s):  
Ion Transport ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
High Mass ◽  
Carbon Cloth ◽  
Mass Loading ◽  
Surface Areas ◽  
Transport Distance ◽  
Uniform Deposition

Abstract Flexible supercapacitor electrodes with high mass loading are crucial for obtaining favorable electrochemical performance but still challenging due to sluggish electron and ion transport. Herein, rationally designed CNT/MnO2/graphene-grafted carbon cloth electrodes are prepared by a “graft-deposit-coat” strategy. Due to the large surface area and good conductivity, graphene grafted on carbon cloth offers additional surface areas for the uniform deposition of MnO2 (9.1 mg cm−2) and facilitates charge transfer. Meanwhile, the nanostructured MnO2 provides abundant electroactive sites and short ion transport distance, and CNT coated on MnO2 acts as interconnected conductive “highways” to accelerate the electron transport, significantly improving redox reaction kinetics. Benefiting from high mass loading of electroactive materials, favorable conductivity, and a porous structure, the electrode achieves large areal capacitances without compromising rate capability. The assembled asymmetric supercapacitor demonstrates a wide working voltage (2.2 V) and high energy density of 10.18 mWh cm−3.

scholarly journals Laser Patterning of High‐Mass‐Loading Graphite Anodes for High‐Performance Li‐Ion Batteries

2020 ◽  
Author(s):  
Romain Dubey ◽  
Marcel‐David Zwahlen ◽  
Yevhen Shynkarenko ◽  
Sergii Yakunin ◽  
Axel Fuerst ◽  
...  
Keyword(s):  
High Performance ◽  
High Mass ◽  
Mass Loading ◽  
Li Ion Batteries ◽  
Laser Patterning ◽  
Graphite Anodes ◽  
Li Ion
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