A green and facile strategy for the low-temperature and rapid synthesis of Li2S@PC–CNT cathodes with high Li2S content for advanced Li–S batteries

2018 ◽  
Vol 6 (21) ◽  
pp. 9906-9914 ◽  
Author(s):  
Sheng Liang ◽  
Yang Xia ◽  
Chu Liang ◽  
Yongping Gan ◽  
Hui Huang ◽  
...  

Lithium sulfide (Li2S) is considered as a promising lithium storage material because of its high theoretical specific capacity of 1166 mA h g−1.

2016 ◽  
Vol 09 (05) ◽  
pp. 1650053 ◽  
Author(s):  
Hua Guo ◽  
Xiaohe Song ◽  
Jiaxin Zheng ◽  
Feng Pan

As one of the most popular cathode materials for high power lithium ion batteries (LIBs) of the electrical-vehicle (EV), lithium iron phosphate (LiFePO4 (LFP)) is limited to its relatively lower theoretical specific capacity of 170[Formula: see text]mAh g[Formula: see text]. To break the limits and further improve the capacity of LFP is promising but challenging. In this study, the ball-milling method is applied to the mixture of LFP and carbon, and the effective capacity larger than the theoretical one by 30[Formula: see text]mAh g[Formula: see text] is achieved. It is demonstrated that ball-milling leads to the LFP-Carbon interface to store the excess Li-ions.


2016 ◽  
Vol 4 (47) ◽  
pp. 18284-18288 ◽  
Author(s):  
Chenji Hu ◽  
Hongwei Chen ◽  
Yanping Xie ◽  
Liang Fang ◽  
Jianhui Fang ◽  
...  

Lithium sulfide with a high theoretical specific capacity of 1166 mA h g−1, has potential application in cathodes because of its high safety and compatibility for Li–S batteries.


2021 ◽  
Author(s):  
Ni Wen ◽  
Siyuan Chen ◽  
xiaolong Li ◽  
Ke Zhang ◽  
Jingjie Feng ◽  
...  

Transition metal oxides (TMOs) are prospective anode materials for lithium-ion batteries (LIBs) owing to their high theoretical specific capacity. Whereas, the inherent low conductivity of TMOs restricts its application. Given...


2021 ◽  
Author(s):  
Baole Guan ◽  
Yu-Shen Zhao ◽  
Nan Zhang ◽  
Junhong Zhang ◽  
Ting Sun ◽  
...  

The platanus-like CuCo2S4 microspheres were fabricated by using a facile hydrothermal following by a sulfidation process. As a lithium storage material, it delivers an outstanding initial specific capacity of 1119.3...


2020 ◽  
Vol 9 (1) ◽  
pp. 116-122
Author(s):  
Hang Le Thi Thu ◽  
Huyen Nguyen Thi Thu ◽  
Thuy Hoang Thi Bich

In the present study, Sb/C nanocomposites have been synthesized using citrate-gel method in combination with a carbonization process at different temperatures in N2 gas. At reasonable carbonization temperatures, the porous Sb/C nanocomposites with novel foam like-interconnected three-dimensional structure, which is built-up by nanosized Sb particles covered by a carbon shell, are obtained. Among the synthesized composites, the Sb/C-600 sample, which is calcinated at 600 oC, exhibit the best lithium storage. At a discharge-charge rate of 0.1 C, the Sb/C-600 electrode can supply an initial reversible specific capacity of 640.7 mA h g-1, 1.7 times higher than the theoretical specific capacity of graphite anode. During 100 cycles, the electrode shows a slight capacity decay with 0.0348% of loss capacity per cycle. Because of this featured architecture, the Sb/C nanocomposites severe as anode material with enhanced lithium storage performances for rechargeable lithium ion batteries.


Author(s):  
Xiaohui Zhao ◽  
Chonglong Wang ◽  
Ziwei Li ◽  
Xuechun Hu ◽  
Amir A. Razzaq ◽  
...  

The lithium sulfur (Li-S) batteries have a high theoretical specific capacity (1675 mAh g-1) and energy density (2600 Wh kg-1), exerting a high perspective as the next-generation rechargeable batteries for...


2016 ◽  
Vol 4 (24) ◽  
pp. 9593-9599 ◽  
Author(s):  
Gaihua Li ◽  
Hao Yang ◽  
Fengcai Li ◽  
Jia Du ◽  
Wei Shi ◽  
...  

Utilizing the adsorption properties of MOFs, a nanostructured NiP2@C was successfully synthesized, which exhibited enhanced capability for lithium storage in terms of both the reversible specific capacity and high-rate performance.


2017 ◽  
Vol 5 (34) ◽  
pp. 18221-18229 ◽  
Author(s):  
Chu Liang ◽  
Sheng Liang ◽  
Yang Xia ◽  
Yun Chen ◽  
Hui Huang ◽  
...  

An environmentally benign and high-yield route is developed to synthesize hierarchical porous carbon for high-density energy storage.


2020 ◽  
Vol 185 ◽  
pp. 04023
Author(s):  
Liqiong Han ◽  
Yifan Liu ◽  
Rongyu Li

In order to improve the electro-conductibility of new energy storage material-manganese carbonate(MnCO3) and the properties apply to supercapacitors, we produce MnCO3/CB composite at room temperature by using a simple and mild liquid phase deposition method. Using dilute HNO3 to purify and activate the CB(carbon black), then put the handled CB into NH4HCO3/MnSO4 mixed solution for liquid deposition. Observed through infrared and XPS methods, we found that - after purified by dilute HNO3, the negatively charged groups(carboxyl & quinonyl) on CB surface increase, which makes CB uneasy to reunite in water and benefits the producing of a homogeneous compound. Observed the compound under SEM:40nm diameter CB granules wrap the Lotus-shaped MnCO3 granule, and form a porous structure between MnCO3 granules. The result of electro-chemical properties indicated by galvanostatic charge-discharge tests shows that the specific capacity of MnCO3/CB composite electrode material is twice of the pure MnCO3 electrode material, while the MnCO3/CB composite has a good cycle capacitive retention ratio. As a newly discovered energy storage material, MnCO3 provides a new direction to make composite material for supercapacitor electrodes.


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