Engineered Si@alginate microcapsule-graphite composite electrode for next generation high-performance lithium-ion batteries

2018 ◽  
Vol 270 ◽  
pp. 480-489 ◽  
Author(s):  
Siming Yang ◽  
Yuanyuan Gu ◽  
Qunting Qu ◽  
Guobin Zhu ◽  
Gao Liu ◽  
...  
Author(s):  
ICHIRO ARISE ◽  
Yuto Miyahara ◽  
Kohei Miyazaki ◽  
Takeshi Abe

Abstract The separator is an essential important key material in lithium-ion batteries (LIBs) because it is in contact with the positive and negative electrodes and the electrolyte. Aramid coated separators (ACS) are widely used in automotive and consumer batteries as high-performance separators for LIBs with high safety and excellent lifetime characteristics. Although much effort has been made to improve the electrolyte composition, the lithium deposition on the surface of the graphite electrode at low temperature and the high charge rate is still an unsolved problem in LIBs. In this work, lithium metal is used as a counter electrode, and a separator was placed between lithium metal and graphite composite electrode. The lithium was deposited on the surface of the graphite composite electrode through the separator. Then, the functional role of ACS in the initial deposition process was investigated. The dendrite blocking effect of ACS was studied by the observation of dendrite growth and pulse cycle performance.


2015 ◽  
Vol 7 (3) ◽  
pp. 1693-1698 ◽  
Author(s):  
Chunhui Gao ◽  
Hailei Zhao ◽  
Pengpeng Lv ◽  
Tianhou Zhang ◽  
Qing Xia ◽  
...  

Nanoscale ◽  
2019 ◽  
Vol 11 (34) ◽  
pp. 15881-15891 ◽  
Author(s):  
Yong Xu ◽  
Jun Chen ◽  
Ze'en Xiao ◽  
Caixia Ou ◽  
Weixia Lv ◽  
...  

A novel porous diatomite composite electrode composed of NTCDA nanowires exhibits lower charge transfer impedance, higher capacity and better rate performance.


2011 ◽  
Vol 79 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Shinichi KOMABA ◽  
Tomoaki OZEKI ◽  
Naoaki YABUUCHI ◽  
Keiji SHIMOMURA

NANO ◽  
2020 ◽  
Vol 15 (10) ◽  
pp. 2050128 ◽  
Author(s):  
Ruirui Gao ◽  
Suqin Wang ◽  
Zhaoxiu Xu ◽  
Hongbo Li ◽  
Shuiliang Chen ◽  
...  

In this work, we developed a simple one-step hydrothermal method to successfully prepare Fe3O4/FeS-reduced graphene oxide (Fe3O4/FeS/rGO) composite directly, which is a novel Lithium-ion batteries (LIBs) anode material. The characterization of Fe3O4/FeS/rGO composite demonstrates that octahedral Fe3O4/FeS particles are uniformly deposited on the rGO, leading to a strong synergy between them. The excellent structural design can make Fe3O4/FeS/rGO composite to have higher reversible capacity (744.7[Formula: see text]mAh/g at 0.1[Formula: see text]C after 50 cycles), excellent cycling performance and superior rate capability. This outstanding electrochemical behavior can be attributed to the conductivity network of rGO, which improves the composite electrode conductivity, facilitates the diffusion and transfer of ions and prevents the aggregation and pulverization of Fe3O4/FeS particles during the charging and discharging processes. Moreover, the Fe3O4/FeS/rGO electrode surface is covered with a thin solid-electrolyte interface (SEI) film and the octahedral structure of Fe3O4/FeS particles is still clearly visible, which indicates that composite electrode has excellent interface stability. We believe that the design of this composite structure will provide a new perspective for the further study of other transition metal oxides for LIBs.


2017 ◽  
Vol 5 (7) ◽  
pp. 6343-6355 ◽  
Author(s):  
Takahiro Mochizuki ◽  
Shoko Aoki ◽  
Tatsuo Horiba ◽  
Martin Schulz-Dobrick ◽  
Zhen-Ji Han ◽  
...  

2017 ◽  
Vol 9 (28) ◽  
pp. 23672-23678 ◽  
Author(s):  
Shiqiang Huang ◽  
Ling-Zhi Cheong ◽  
Deyu Wang ◽  
Cai Shen

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