scholarly journals A 3D conductive scaffold with lithiophilic modification for stable lithium metal batteries

2018 ◽  
Vol 6 (37) ◽  
pp. 17967-17976 ◽  
Author(s):  
Rensheng Song ◽  
Bo Wang ◽  
Ying Xie ◽  
Tingting Ruan ◽  
Fei Wang ◽  
...  

A 3D lithiophilic N-doped graphene/nickel foam (NGNF) scaffold to host Li has been successfully prepared by a simple hydrothermal method. This scaffold can improve the poor lithiophilicity of nickel foam (NF) due to the presence of N-doped graphene (NG) with lithiophilic functional groups while maintaining its 3D porous electrode structure, leading to uniform Li plating/stripping.

Ionics ◽  
2020 ◽  
Vol 26 (8) ◽  
pp. 4009-4018 ◽  
Author(s):  
Chenyu Du ◽  
Enshan Han ◽  
Li Gao ◽  
Lina Li ◽  
Shunpan Qiao ◽  
...  

2019 ◽  
Vol 7 (13) ◽  
pp. 7752-7759 ◽  
Author(s):  
Changzhi Sun ◽  
Yanpei Li ◽  
Jun Jin ◽  
Jianhua Yang ◽  
Zhaoyin Wen

Tightly arranged ZnO nanorods are artfully designed to enhance the lithiophilicity of pristine Ni foam and regulate lithium deposition.


2021 ◽  
pp. 1971
Author(s):  
Xiaojuan Zhang ◽  
Fei Ma ◽  
Katam Srinivas ◽  
Bo Yu ◽  
Xin Chen ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 36059-36065 ◽  
Author(s):  
Tian Ouyang ◽  
Kui Cheng ◽  
Shuying Kong ◽  
Ke Ye ◽  
Yinyi Gao ◽  
...  

Co3O4 with different morphologies on nickel foam is successfully achieved via a simple hydrothermal method by changing the volume ratio between ethanol and water.


2021 ◽  
Vol 9 ◽  
Author(s):  
Pengcheng Yu ◽  
Yu Ye ◽  
Jinlong Zhu ◽  
Wei Xia ◽  
Yusheng Zhao

Solid-state lithium metal batteries have attracted broad interest as a promising energy storage technology because of the high energy density and enhanced safety that are highly desired in the markets of consumer electronics and electric vehicles. However, there are still many challenges before the practical application of the new battery. One of the major challenges is the poor interface between lithium metal electrodes and solid electrolytes, which eventually lead to the exceptionally high internal resistance of the cells and limited output. The interface issue arises largely due to the poor contact between solid and solid, and the mechanical/electrochemical instability of the interface. In this work, an in situ “welding” strategy is developed to address the interfacial issue in solid-state batteries. Microliter-level of liquid electrolyte is transformed into an organic–inorganic composite buffer layer, offering a flexible and stable interface and promoting enhanced electrochemical performance. Symmetric lithium–metal batteries with the new interface demonstrate good cycling performance for 400 h and withstand the current density of 0.4 mA cm−2. Full batteries developed with lithium–metal anode and LiFePO4 cathode also demonstrate significantly improved cycling endurance and capacity retention.


Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2468
Author(s):  
Hui Zhan ◽  
Mengjun Wu ◽  
Rui Wang ◽  
Shuohao Wu ◽  
Hao Li ◽  
...  

Composite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the polymer matrix during the organic–inorganic mixing process is very important for the properties of the composite electrolyte. Herein, a partial cross-linked PEO-based CPE was prepared by porous vinyl-functionalized silicon (p-V-SiO2) nanoparticles as fillers and poly (ethylene glycol diacrylate) (PEGDA) as cross-linkers. By combining the mechanical rigidity of ceramic fillers and the flexibility of PEO, the as-made electrolyte membranes had excellent mechanical properties. The big special surface area and pore volume of nanoparticles inhibited PEO recrystallization and promoted the dissolution of lithium salt. Chemical bonding improved the interfacial compatibility between organic and inorganic materials and facilitated the homogenization of lithium-ion flow. As a result, the symmetric Li|CPE|Li cells could operate stably over 450 h without a short circuit. All solid Li|LiFePO4 batteries were constructed with this composite electrolyte and showed excellent rate and cycling performances. The first discharge-specific capacity of the assembled battery was 155.1 mA h g−1, and the capacity retention was 91% after operating for 300 cycles at 0.5 C. These results demonstrated that the chemical grafting of porous inorganic materials and cross-linking polymerization can greatly improve the properties of CPEs.


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