Suppressing Redox Shuttle with MXene-Modified Separators for Li–O2 Batteries

2021 ◽  
Author(s):  
Lei Shi ◽  
Zheng Li ◽  
Yanpei Li ◽  
Gan Wang ◽  
Meifen Wu ◽  
...  
Keyword(s):  
Redox Shuttle

Cellulose Separators with Integrated Carbon Nanotube Interlayers for Lithium-Sulfur Batteries: An Investigation into the Complex Interplay Between Cell Components

2019 ◽  
Author(s):  
Yu-Chuan Chien ◽  
Ruijun Pan ◽  
Ming-Tao Lee ◽  
Leif Nyholm ◽  
Daniel Brandell ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Solid Electrolyte Interphase ◽  
Holistic Approach ◽  
Cycle Life ◽  
Complex Interplay ◽  
Positive Electrodes ◽  
Lithium Sulfur Batteries ◽  
Cell Components ◽  
Redox Shuttle ◽  
Lithium Sulfur

This work aims to address two major roadblocks in the development of lithium-sulfur (Li-S) batteries: the inefficient deposition of Li on the metallic Li electrode and the parasitic "polysulfide redox shuttle". These roadblocks are here approached, respectively, by the combination of a cellulose separator with a cathode-facing conductive porous carbon interlayer, based on their previously reported individual benefits. The cellulose separator increases cycle life by 33%, and the interlayer by a further 25%, in test cells with positive electrodes with practically relevant specifications and a relatively low electrolyte/sulfur (E/S) ratio. Despite the prolonged cycle life, the combination of the interlayer and cellulose separator increases the polysulfide shuttle current, leading to reduced Coulombic efficiency. Based on XPS analyses, the latter is ascribed to a change in the composition of the solid electrolyte interphase (SEI) on Li. Meanwhile, electrolyte decomposition is found to be slower in cells with cellulose-based separators, which explains their longer cycle life. These counterintuitive observations demonstrate the complicated interactions between the cell components in the Li-S system and how strategies aiming to mitigate one unwanted process may exacerbate another. This study demonstrates the value of a holistic approach to the development of Li-S chemistry.<br>

Rational Design of Reversible Redox Shuttle for Highly Efficient Light-Driven Microswimmer

ACS Nano ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 3272-3280 ◽  
Author(s):  
Jizhuang Wang ◽  
Ze Xiong ◽  
Ming Liu ◽  
Xiao-meng Li ◽  
Jing Zheng ◽  
...  
Keyword(s):  
Rational Design ◽  
Highly Efficient ◽  
Reversible Redox ◽  
Redox Shuttle

A Hydroxamic Acid Anchoring Group for Durable Dye-Sensitized Solar Cells Incorporating a Cobalt Redox Shuttle

ChemSusChem ◽  
2017 ◽  
Vol 10 (17) ◽  
pp. 3347-3351 ◽  
Author(s):  
Tomohiro Higashino ◽  
Yuma Kurumisawa ◽  
Ning Cai ◽  
Yamato Fujimori ◽  
Yukihiro Tsuji ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hydroxamic Acid ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Redox Shuttle ◽  
Anchoring Group ◽  
Sensitized Solar Cells

Efficient organic dye-sensitized thin-film solar cells based on the tris(1,10-phenanthroline)cobalt(II/III) redox shuttle

2011 ◽  
Vol 4 (6) ◽  
pp. 2030 ◽  
Author(s):  
Difei Zhou ◽  
Qingjiang Yu ◽  
Ning Cai ◽  
Yu Bai ◽  
Yinghui Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Organic Dye ◽  
Thin Film Solar Cells ◽  
Dye Sensitized ◽  
Redox Shuttle

Iodine as a Temperature-Responsive Redox Shuttle Additive for Swelling Suppression of Lithium-Ion Batteries at Elevated Temperatures

2016 ◽  
Vol 3 (11) ◽  
pp. 1915-1921 ◽  
Author(s):  
Seong-Hyo Park ◽  
Hyeon Jin Kim ◽  
Joomi Jeon ◽  
Yongsu Choi ◽  
Jeong-Ju Cho ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Elevated Temperatures ◽  
Lithium Ion ◽  
Temperature Responsive ◽  
Redox Shuttle

High-Rate Overcharge Protection of LiFePO[sub 4]-Based Li-Ion Cells Using the Redox Shuttle Additive 2,5-Ditertbutyl-1,4-dimethoxybenzene

2005 ◽  
Vol 152 (6) ◽  
pp. A1283 ◽  
Author(s):  
J. R. Dahn ◽  
Junwei Jiang ◽  
L. M. Moshurchak ◽  
M. D. Fleischauer ◽  
C. Buhrmester ◽  
...  
Keyword(s):  
High Rate ◽  
Redox Shuttle ◽  
Li Ion ◽  
Overcharge Protection

scholarly journals Dye-sensitized solar cells based on cobalt-containing room temperature ionic liquid redox shuttles

RSC Advances ◽  
2017 ◽  
Vol 7 (23) ◽  
pp. 13689-13695 ◽  
Author(s):  
Zhenyong Wang ◽  
Lei Wang ◽  
Ye Zhang ◽  
Jiangna Guo ◽  
Hao Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Room Temperature ◽  
Dye Sensitized Solar Cells ◽  
Room Temperature Ionic Liquid ◽  
Dye Sensitized ◽  
Redox Shuttles ◽  
Redox Shuttle ◽  
Sensitized Solar Cells

An imidazolium-type co-containing ionic liquid, [BMIm]2[Co(NCS)4], was synthesized and applied as a redox shuttle for dye-sensitized solar cells.

Ultrathin Polyoxometalate Coating as the Redox Shuttle for Acid‐Free Electrochromic Polymer Capacitive Windows

2019 ◽  
Vol 29 (18) ◽  
pp. 1806590 ◽  
Author(s):  
Shi‐Ming Wang ◽  
Younghoon Kim ◽  
Byeonggwan Kim ◽  
Minsu Han ◽  
Eunkyoung Kim
Keyword(s):  
Redox Shuttle ◽  
Electrochromic Polymer
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