RuO2-coated vertical graphene hybrid electrodes for high-performance solid-state supercapacitors

2017 ◽  
Vol 5 (33) ◽  
pp. 17293-17301 ◽  
Author(s):  
Zhao Jun Han ◽  
Shafique Pineda ◽  
Adrian T. Murdock ◽  
Dong Han Seo ◽  
Kostya (Ken) Ostrikov ◽  
...  

Solid-state supercapacitors can be fabricated by uniformly coating RuO2onto vertical graphene (VG) using a simple, scalable, low-cost and solution-free method. The binder-free RuO2/VG hybrid electrodes possess a high areal capacitance, low electrical resistance, good frequency response, and excellent stability, shedding light on the commercialisation of Ru-based energy storage devices.

ChemSusChem ◽  
2013 ◽  
Vol 7 (1) ◽  
pp. 308-313 ◽  
Author(s):  
Xianfu Wang ◽  
Bin Liu ◽  
Qingyi Xiang ◽  
Qiufan Wang. ◽  
Xiaojuan Hou ◽  
...  

2017 ◽  
Vol 4 (3) ◽  
pp. 442-449 ◽  
Author(s):  
Qunxing Zhao ◽  
Mingming Zhao ◽  
Jiaqing Qiu ◽  
Huan Pang ◽  
Wen-Yong Lai ◽  
...  

Mn3[Co(CN)6]2·nH2O nanocrystals are firstly applied in flexible solid-state electrochemical energy storage devices.


2021 ◽  
Author(s):  
Qichao Song ◽  
Chunguang Yang

Abstract Todays, metal-organic frameworks (MOFs) and their derived structures have been extensively investigated as the novel electrode materials in energy storage area due to their stable porous architectures and exceptionally large specific surface area. In this study, bimetallic Ni,Zn-MOF is synthesized onto Ni foam via a novel indirect cathodic electrodeposition method for the first time. After that, the fabricated Ni,Zn-MOFs onto Ni foam was converted to corresponding bi-metal hydroxide@C/Ni foam through direct chemical treating with 6M KOH solution. The obtained Ni,Zn-MOFs/NF and Ni2 − xZnx (OH)2@C/NF electrodes are characterized through XRD, FT-IR, FE-SEM and EDS analyses. These analyses results confirmed deposition of well-defined crystalline porous sheet-like structures of Ni3 − xZnx(BTC)2 deposited onto Ni foam, where the hydroxide@C electrode was also exhibited similar morphology. As the binder-free electrode, the as-prepared Ni,Zn-MOF@Ni foam exhibited the superior storage capacities of 356.1 mAh g− 1 and 255.5 mAh g− 1 as well as good cycling stabilities of 94.2 % and 84.5 % after 6000 consecutive charge/discharge cycles at the current densities of 5 and 15 A g− 1, respectively. On the other hand, Ni,Zn-MOF derived hydroide@C/Ni foam presented the superior capacities of 545 mAh g− 1 and 406 mAh g− 1 as well as proper cycle lifes of 91.8 % and 78.3 % after 6000 cycling at the applied loads of 5 and 15 A g− 1, respectively. Based on these findings, both of these fabricated battery-type electrodes are introduced as the promising candidates for use in energy storage devices.


2019 ◽  
pp. 1801041 ◽  
Author(s):  
Shujun Wang ◽  
Jiadong Qin ◽  
Yubai Zhang ◽  
Fang Xia ◽  
Minsu Liu ◽  
...  

2018 ◽  
Vol 11 (9) ◽  
pp. 2560-2568 ◽  
Author(s):  
Jiarui He ◽  
Yuanfu Chen ◽  
Arumugam Manthiram

Lithium–sulfur (Li–S) batteries have been regarded as one of the most promising next-generation energy-storage devices, due to their low cost and high theoretical energy density (2600 W h kg−1).


2019 ◽  
Vol 2 (5) ◽  
pp. 2634-2641 ◽  
Author(s):  
Mao-Cheng Liu ◽  
Jun Li ◽  
Qing-Qing Yang ◽  
Yan Xu ◽  
Ling-Bin Kong ◽  
...  

Author(s):  
Longwei Li ◽  
Lanshuang Zhang ◽  
Wenbin Guo ◽  
Caiyun Chang ◽  
Jing Wang ◽  
...  

The rechargeable aqueous Zn battery is promising for next-generation wearable energy storage devices, due to its outstanding safety and low cost. Herein, we report a high-performance dual-ion Zn battery with...


2014 ◽  
Vol 07 (01) ◽  
pp. 1430001 ◽  
Author(s):  
Kunfeng Chen ◽  
Dongfeng Xue

Cu -based materials, including metal Cu and semiconductors of Cu 2 O and CuO , are promising and important candidates toward practical electrochemical energy storage devices due to their abundant, low cost, easy synthesis and environmentally friendly merits. This review presents an overview of the applications of Cu -based materials in the state-of-art electrochemical energy storage, including both lithium-ion batteries and supercapacitors. The synthesis chemistry, structures and the corresponding electrochemical performances of these materials are summarized and compared. During chemical synthesis and electroactive performance measurement of Cu -based materials, we found that Cu – Cu 2 O – CuO sequence governs all related transformations. Novel water-soluble CuCl 2 supercapacitors with ultrahigh capacitance were also reviewed which can advance the understanding of intrinsic mechanism of inorganic pseudocapacitors. The major goal of this review is to highlight some recent progresses in using Cu -based materials for electrochemical energy storage.


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