Results 71 to 80 of about 11,693 (222)

t2 occupancy as a descriptor for polysulfide conversion on spinel oxides

Nature Communications
Transition metal oxides with partially filled d orbitals serve as effective polysulfide conversion catalysts in lithium-sulfur batteries. Nonetheless, a predictive descriptor to elucidate their structure-activity relationship is still lacking.
Wen Xie, Zihan Shen, Shibo Xi, Longcheng Zhang, Kai Tang, Zhenhui Ma, Chichong Lu, Zhichuan J. Xu   +7 more
doaj   +1 more source

Polysulfide-Induced Synthesis of Hierarchical Ni₃S₂/NiCo₂S₄ Nanorods Supported on Nickel Foam for Boosted Oxygen Evolution Catalysis

Crystal structures and chemical states can be reconstructed by inducing the positioning growth of metal sulfide, which is an efficient strategy to enhance the oxygen evolution activity of an anode.
Faquan Yu (1800598), Hongliang Yu (665171), Yu Luo (277978), Ziyi Guo (726056), Hui Li (32376), Jie Yang (121778), Ning Cai (52570), Jianzhi Wang (2210158), Yanjun Yu (1755808), Yanan Xue (2146342)   +9 more
core   +1 more source

Disulfide Interchange in Polysulfide Polymers

, 1957
A study has been made on the effect of thiols and disulfides on lowering the molecular weight of polysulfide polymers. It was shown that in the presence of aqueous sodium disulfide there is an interchange of chain segments. This effect is observable if a
F. O. Davis, E. M. Fettes, E. R. Bertozzi   +2 more
core   +1 more source

Multifunctional Cellulose Nanocrystals as a High-Efficient Polysulfide Stopper for Practical Li–S Batteries

, 2020
Because of the severe shuttle effect of polysulfides, achieving durable Li-S batteries is still a great challenge, especially under practical operation conditions including the high sulfur content, high loading, and high operation temperature.
Liu, Jie, Wang, Dong, Li, Yanyan, Tretiak, Sergei, Wang, Hui, Zhang, Shanqing, Xuan, Yuxue, Zhou, Liujiang, Wang, Lei, Li, Zhenwei, Lin, Haifeng, Guo, Ziyang   +11 more
core   +1 more source

Internal Electric Field‐Guided, Low‐Adsorption Ferroelectric Anode Protective Layers for Sustainable Suppression of Polysulfide Side Reactions in Lithium–Sulfur Batteries

Advanced Energy Materials, EarlyView.
A positively polarized ferroelectric β‐pvdf layer incorporating fluorinated boron nitride nanosheets (PPFBN) establishes a strong internal field that promotes Li+ transport toward the anode while suppressing the migration of polysulfide anions. In addition, its intrinsically low polysulfide affinity helps preserve protective‐layer functionality ...
Daehun Han, Hyerim Jang, Junyoung Heo, Kyungjun Kim, Hawon Gu, Jun‐Woo Park, Sang‐Min Lee   +6 more
wiley   +1 more source

Synthesis and crystal structure of (1,4,7,10-tetraazacyclododecane-κ4N)(tetrasulfido-κ2S1,S4)manganese(II)

Acta Crystallographica Section E: Crystallographic Communications, 2020
The title compound, [Mn(S4)(C8H20N4)], was accidentally obtained by the hydrothermal reaction of Mn(ClO4)2·6H2O, cyclen (cyclen = 1,4,7,10-tetraazacyclododecane) and Na3SbS4·9H2O in water at 413 K, indicating that polysulfide anions might represent ...
Felix Danker, Christian Näther, Wolfgang Bensch   +2 more
doaj   +1 more source

Nafion Inhibits Polysulfide Crossover in Hybrid Nonaqueous Redox Flow Batteries

, 2022
We report on the effectiveness of sodium-exchanged Nafion membranes for inhibiting polysulfide crossover during redox flow battery operation. The solubility of polysulfides allows them to be used as a high-capacity catholyte for nonaqueous redox flow ...
Thomas A. Zawodzinski (1489987), Jagjit Nanda (1285947), Michelle L. Lehmann (11798422), J. Landon Tyler (9446193), Robert L. Sacci (1550779), Guang Yang (154978)   +5 more
core   +1 more source

Multi‐modal Operando Analysis of Lithium–Sulfur Batteries: A Comparative Study on the Influence of Electrolyte Composition

Advanced Energy Materials, EarlyView.
The influence of different electrolytes on Lithium–sulfur batteries is investigated. Multimodal operando analysis, including Raman, UV–vis, and Impedance spectroscopy is used to study degradation mechanisms. The solubility of polysulfides in the electrolyte is crucial for battery capacity and lifetime.
Oliver Löhmann, Pouya Partovi‐Azar, Mirco Ruttert, Sebastian Risse   +3 more
wiley   +1 more source

Modelling of chemical reaction systems in polysulfide pulping

, 2015
Polysulfide pulping has shown great potential in terms of yield increase in comparison to normal kraft pulping. However, polysulfide chemistry itself is quite complex which makes it even more complicated when it is combined with wood chemistry.
Khan, Nadir
core   +1 more source

Decoupling Quasi‐Solid‐State Sulfur Conversion Mechanisms in Weakly Solvating and Locally High Concentration Electrolytes

Advanced Energy Materials, EarlyView.
Weakly solvating CME–TTE and localized high‐concentration G2–TTE electrolytes redirect lithium–sulfur chemistry toward quasi‐solid‐state conversion through distinct coordination environments. Molecular dynamics and multimodal electrochemical and spectroscopic measurements show that G2–TTE couples multidentate solvent coordination, anion participation ...
Boyi Pang, Huanxin Li, Liam Bird, Yiming Guo, Bochen Li, Xiaoxia Guo, Roby Soni, Yi Zeng, Paul R. Shearing, Thomas S. Miller, Rhodri Jervis, Alexander J. Kibler, James B. Robinson   +12 more
wiley   +1 more source