Nanoporous Adsorption Effect on Alteration of the Li+ Diffusion Pathway by a Highly Ordered Porous Electrolyte Additive for High-Rate All-Solid-State Lithium Metal Batteries

2018 ◽  
Vol 10 (28) ◽  
pp. 23874-23882 ◽  
Author(s):  
Wenwen Li ◽  
Sanpei Zhang ◽  
Bangrun Wang ◽  
Sui Gu ◽  
Dong Xu ◽  
...  
2019 ◽  
Vol 11 (18) ◽  
pp. 16578-16585 ◽  
Author(s):  
Zhengxin Zhu ◽  
Lei-Lei Lu ◽  
Yichen Yin ◽  
Jiaxin Shao ◽  
Bao Shen ◽  
...  

2018 ◽  
Vol 31 (3) ◽  
pp. 1804815 ◽  
Author(s):  
Chunpeng Yang ◽  
Hua Xie ◽  
Weiwei Ping ◽  
Kun Fu ◽  
Boyang Liu ◽  
...  

2022 ◽  
Author(s):  
Erabhoina Harimohan ◽  
Mukundan Thelakkat

Abstract All solid-state rechargeable lithium metal batteries (SS-LMBs) are gaining more and more importance because of their higher safety and higher energy densities in comparison to their liquid-based counterparts. In spite of this potential, their low discharge capacities and poor rate performances limit them to be used as state-of-the-art SS-LMBs. This arise due to the low intrinsic ionic and electronic transport pathways within the solid components in the cathode during the fast charge/discharge processes. Therefore, it is necessary to have a cathode with good electron conducting channels to increase the active material utilization without blocking the movement of lithium ions. Since SS-LMBs require a different morphology and composition of the cathode, we selected LiFePO4 (LFP) as a prototype and, we have systematically studied the influence of the cathode composition by varying the contents of active material LFP, conductive additives (super C65 conductive carbon black and conductive graphite), ion conducting components (PEO and LiTFSI) in order to elucidate the best ion as well as electron conduction morphology in the cathode. In addition, a comparative study on different cathode slurry preparation methods was made, wherein ball milling was found to reduce the particle size and increase the homogeneity of LFP which further aids fast Li ion transport throughout the electrode. The SEM analysis of the resulting calendered electrode shows the formation of non-porous and crack-free structures with the presence of conductive graphite throughout the electrode. As a result, the optimum LFP cathode composition with solid polymer nanocomposite electrolyte (SPNE) delivered higher initial discharge capacities of 114 mAh g-1 at 0.2C rate at 30 ᴼC and 141 mAh g-1 at 1C rate at 70 ᴼC. When the current rate was increased to 2C, the electrode still delivered high discharge capacity of 82 mAh g-1 even after 500 cycle, which indicates that the optimum cathode formulation is one of the important parameters in building high rate and long cycle performing SS-LMBs.


Author(s):  
zhangqin shi ◽  
Wenyao Guo ◽  
luozeng zhou ◽  
Qunjie Xu ◽  
Yulin Min

Polyethylene oxide (PEO)-based polymer electrolytes are potential replacements for safer solid electrolytes in next-generation lithium metal batteries. However, the lower room temperature ionic conductivity and poor mechanical properties greatly hinder...


2019 ◽  
Vol 55 (47) ◽  
pp. 6704-6707 ◽  
Author(s):  
Bin Sun ◽  
Yang Jin ◽  
Jialiang Lang ◽  
Kai Liu ◽  
Minghao Fang ◽  
...  

Based on a garnet solid electrolyte, an electron/ion dual-conductive framework established by a spraying method enabled an alloy anode that realized a high-rate operation.


2020 ◽  
Vol 26 ◽  
pp. 448-456 ◽  
Author(s):  
Chaoyi Yan ◽  
Pei Zhu ◽  
Hao Jia ◽  
Zhuang Du ◽  
Jiadeng Zhu ◽  
...  

Author(s):  
Kuirong Deng ◽  
Tianyu Guan ◽  
Fuhui Liang ◽  
Xiaoqiong Zheng ◽  
Qingguang Zeng ◽  
...  

Solid-state lithium metal batteries (LMBs) assembled with polymer electrolytes (PEs) and lithium metal anodes are promising batteries owing to their enhanced safeties and ultrahigh theoretical energy densities. Nevertheless, polymer electrolytes...


2021 ◽  
Vol 13 (10) ◽  
pp. 11958-11967
Author(s):  
Zhongran Yao ◽  
Kongjun Zhu ◽  
Xia Li ◽  
Jie Zhang ◽  
Jun Li ◽  
...  

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