High-capacity organic sodium ion batteries using a sustainable C4Q/CMK-3/SWCNT electrode

2019 ◽  
Vol 6 (8) ◽  
pp. 1977-1985 ◽  
Author(s):  
Bing Yan ◽  
Lijiang Wang ◽  
Weiwei Huang ◽  
Shibing Zheng ◽  
Pandeng Hu ◽  
...  

SWCNTs formed a three-dimensional conductive network between C4Q/CMK-3 nanocomposites, significantly improving the electrochemical performance of C4Q-SIBs.

2020 ◽  
Vol 8 (34) ◽  
pp. 17454-17462 ◽  
Author(s):  
Chen-De Zhao ◽  
Jin-Zhi Guo ◽  
Zhen-Yi Gu ◽  
Xin-Xin Zhao ◽  
Wen-Hao Li ◽  
...  

The NaVPO4F cathode material coated with a robust 3D rGO carbon network exhibits an excellent electrochemical performance for sodium-ion batteries.


Ionics ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 2343-2351 ◽  
Author(s):  
Congcong Wei ◽  
Fakui Luo ◽  
Chi Zhang ◽  
Hui Gao ◽  
Jiazheng Niu ◽  
...  

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Shuangshuang Ding ◽  
Bingxin Zhou ◽  
Changmiao Chen ◽  
Zhao Huang ◽  
Pengchao Li ◽  
...  

AbstractSodium-ion batteries (SIBs) are considered to be attractive candidates for large-scale energy storage systems because of their rich earth abundance and consistent performance. However, there are still challenges in developing desirable anode materials that can accommodate rapid and stable insertion/extraction of Na+ and can exhibit excellent electrochemical performance. Herein, the self-assembled hairball-like VS4 as anodes of SIBs exhibits high discharge capacity (660 and 589 mAh g−1 at 1 and 3 A g−1, respectively) and excellent rate property (about 100% retention at 10 and 20 A g−1 after 1000 cycles) at room temperature. Moreover, the VS4 can also exhibit 591 mAh g−1 at 1 A g−1 after 600 cycles at 0 °C. An unlike traditional mechanism of VS4 for Na+ storage was proposed according to the dates of ex situ characterization, cyclic voltammetry, and electrochemical kinetic analysis. The capacities of the final stabilization stage are provided by the reactions of reversible transformation between Na2S and S, which were considered the reaction mechanisms of Na–S batteries. This work can provide a basis for the synthesis and application of sulfur-rich compounds in fields of batteries, semiconductor devices, and catalysts.


2019 ◽  
Vol 7 (34) ◽  
pp. 19898-19908 ◽  
Author(s):  
Jing Li ◽  
Shaobo Han ◽  
Junwei Zhang ◽  
Junxiang Xiang ◽  
Xingqun Zhu ◽  
...  

A flexible three-dimensional WSe2/C nanofiber was reported and investigated by the in situ TEM, which finally exhibited high reversible cycling capability and ultra-long lifespan up to 10 000 cycles at ultrahigh rate.


Nanoscale ◽  
2020 ◽  
Vol 12 (42) ◽  
pp. 21780-21787
Author(s):  
Benoît D. L. Campéon ◽  
Chen Wang ◽  
Yuta Nishina

This study examines the synthesis and electrochemical performance of three-dimensional graphene for Li-ion batteries and Na-ion batteries.


2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Linqu Luo ◽  
Jianjun Song ◽  
Longfei Song ◽  
Hongchao Zhang ◽  
Yicheng Bi ◽  
...  

Abstract Metallic Sn has provoked tremendous progress as an anode material for sodium-ion batteries (SIBs). However, Sn anodes suffer from a dramatic capacity fading, owing to pulverization induced by drastic volume expansion during cycling. Herein, a flexible three-dimensional (3D) hierarchical conductive network electrode is designed by constructing Sn quantum dots (QDs) encapsulated in one-dimensional N,S co-doped carbon nanofibers (NS-CNFs) sheathed within two-dimensional (2D) reduced graphene oxide (rGO) scrolls. In this ingenious strategy, 1D NS-CNFs are regarded as building blocks to prevent the aggregation and pulverization of Sn QDs during sodiation/desodiation, 2D rGO acts as electrical roads and “bridges” among NS-CNFs to improve the conductivity of the electrode and enlarge the contact area with electrolyte. Because of the unique structural merits, the flexible 3D hierarchical conductive network was directly used as binder- and current collector-free anode for SIBs, exhibiting ultra-long cycling life (373 mAh g−1 after 5000 cycles at 1 A g−1), and excellent high-rate capability (189 mAh g−1 at 10 A g−1). This work provides a facile and efficient engineering method to construct 3D hierarchical conductive electrodes for other flexible energy storage devices.


Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.


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