Enhanced Electrolyte Ion Penetration in Microdome-like Graphene with High Mass Loading for High-Performance Flexible Supercapacitors

2019 ◽  
Vol 2 (9) ◽  
pp. 6790-6799 ◽  
Author(s):  
Quanhong Chang ◽  
Lemei Li ◽  
Huijie Qiao ◽  
Liman Sai ◽  
Yiwen Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
High Mass ◽  
Mass Loading ◽  
Flexible Supercapacitors ◽  
Ion Penetration

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

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

Large areal mass, flexible and freestanding polyaniline/bacterial cellulose/graphene film for high-performance supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107426-107432 ◽  
Author(s):  
Rong Liu ◽  
Lina Ma ◽  
Shu Huang ◽  
Jia Mei ◽  
Jun Xu ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
High Performance ◽  
Graphene Film ◽  
High Mass ◽  
Mass Loading ◽  
Filtering Method ◽  
Conductive Paper

Flexible and freestanding electrodes with high mass loading in the range of 7–13 mg cm−2 made of polyaniline (PANI)/bacterial cellulose (BC)/graphene (GN) conductive paper through a simple filtering method.

Atom-economical construction of carbon nanotube architectures for flexible supercapacitors with ultrahigh areal and volumetric capacities

2018 ◽  
Vol 6 (43) ◽  
pp. 21287-21294 ◽  
Author(s):  
Zhenhua Li ◽  
Qihui Yang ◽  
Kui Fan ◽  
Wenfu Xie ◽  
Wang Qiao ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Mass ◽  
Mass Loading ◽  
Cvd Method ◽  
Flexible Supercapacitors ◽  
Ideal Matrix

Carbon nanotube nanoarrays were fabricated by a self-sustaining CVD method, which form an ideal matrix for supporting high mass-loading pseudocapacitance materials.

scholarly journals High mass loading flower-like MnO2 on NiCo2O4 deposited graphene/nickel foam as high-performance electrodes for asymmetric supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (27) ◽  
pp. 16161-16172
Author(s):  
Jing Jin ◽  
Jie Ding ◽  
Xing Wang ◽  
Congcong Hong ◽  
Huaping Wu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Mass ◽  
Asymmetric Supercapacitor ◽  
Mass Loading ◽  
Asymmetric Supercapacitors ◽  
3D Graphene

A NiCo2O4/MnO2 heterostructure with high mass loading MnO2 microflowers was built on the surface of 3D graphene/nickel foam for the preparation of an asymmetric supercapacitor with splended energy density (45.9 Wh kg−1).

Conductive gel composite cathodes with high mass loading of active oxides for high-performance solid-state lithium metal batteries

2020 ◽  
Vol 345 ◽  
pp. 115196
Author(s):  
Chengzhou Xin ◽  
Xue Zhang ◽  
Chuanjiao Xue ◽  
Shuo Wang ◽  
Liangliang Li ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
High Mass ◽  
Mass Loading ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Composite Cathodes
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