Results 91 to 100 of about 39,422 (338)

Electrocatalysis of polysulfide conversion by sulfur-deficient MoS2 nanoflakes for lithium–sulfur batteries

open access: yes, 2017
Lithium–sulfur batteries are promising next-generation energy storage devices due to their high energy density and low material cost. Efficient conversion of lithium polysulfides to lithium sulfide (during discharge) and to sulfur (during recharge) is a ...
Haibin Lin   +7 more
semanticscholar   +1 more source

Mitigating Electrochemical Isolation in Ni‐Rich Layered Cathodes for Durable Solid‐State Batteries

open access: yesAdvanced Science, EarlyView.
Electrochemical isolation of Ni‐rich layered cathodes in sulfide solid‐state batteries is uncovered as a previously unrecognized but critical performance‐limiting pathway. This study elucidates its origin and impact and introduces a scalable mitigation strategy using oxygen‐functionalized conductive carbon.
Abhirup Bhadra   +7 more
wiley   +1 more source

Elemental sulfur coarsening kinetics [PDF]

open access: yes, 2014
BACKGROUND: Elemental sulfur exists is a variety of forms in natural systems, from dissolved forms (noted as S8(diss) or in water as S8(aq)) to bulk elemental sulfur (most stable as α-S8).
Druschel, Gregory K., Garcia, Angel A.
core   +1 more source

Unveiling a Stable Polysulfide Transport Framework in a Fluorine‐Free Li‐S Batteries

open access: yesAdvanced Science, EarlyView.
This work unveils a lithium thiophosphate reaction pathway activated by trigger P2S5 units, which initiate fast self‐assembly and shift the system away from conventional Li‐S reactions. The reversible Li‐P‐S framework delivers stability, safety, and high energy density, while enabling a distinct solid‐liquid hybrid electrochemical mode that provides a ...
Feng‐Yu Wu   +3 more
wiley   +1 more source

Evaluation of a metering, mixing, and dispensing system for mixing polysulfide adhesive [PDF]

open access: yes
Tests were performed to evaluate whether a metered mixing system can mix PR-1221 polysulfide adhesive as well as or better than batch-mixed adhesive; also, to evaluate the quality of meter-mixed PR-1860 and PS-875 polysulfide adhesives.
Evans, Kurt B.
core   +1 more source

Highly active nanostructured CoS2/CoS heterojunction electrocatalysts for aqueous polysulfide/iodide redox flow batteries

open access: yesNature Communications, 2019
Aqueous polysulfide/iodide redox flow batteries are attractive for scalable energy storage due to their high energy density and low cost. However, their energy efficiency and power density are usually limited by poor electrochemical kinetics of the redox
Dui Ma   +9 more
semanticscholar   +1 more source

Reaction Mechanism, Challenges, and Strategies of High‐Energy‐Density Sodium‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
Focusing on high‐energy‐density sodium‐ion batteries, this review highlights the advantages offered by conversion‐type cathode materials. The currently studied cathode materials are systematically introduced. By analyzing sulfur, oxygen, and transition metal halides and other conversion‐type cathodes, the key challenges associated with these cathodes ...
Dan Yu   +8 more
wiley   +1 more source

Study to determine the aquatic biological effects on the Solid Rocket Booster (SRB) [PDF]

open access: yes
The surface of the reusable solid rocket boosters (SRB), which are jettisoned from the Shuttle Orbiter to parachute in the sea, are studied for colonization by marine life.
Colwell, R. R., Zachary, A.
core   +1 more source

Co3O4/C‐NFs Induced 3D Electric Field Enhancement for Dual‐Regulation of Polysulfides and Li+ Transport in Lithium–Sulfur Batteries

open access: yesAdvanced Science, EarlyView.
A nano‐framework structured Co3O4/C catalyst with 3D electric field enhancement is designed to facilitate the mass transfer of both Li⁺ and lithium polysulfides (LiPSs) in lithium–sulfur batteries (LSBs). The enhanced electric‐field–driven migration significantly accelerates sulfur reduction reaction (SRR) kinetics while suppressing the shuttle effect ...
Zhijie Qi   +11 more
wiley   +1 more source

Elucidating the electrochemical activity of electrolyte-insoluble polysulfide species in lithium-sulfur batteries [PDF]

open access: yes, 2016
The direct synthesis of Li2 S2 , a proposed solid intermediate in the discharge of lithium-sulfur (Li-S) batteries, was accomplished by treating elemental lithium with sulfur in liquid ammonia at -41?? C.
Bielawski, Christopher W.   +3 more
core   +1 more source

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