Lithium-sulfur (Li-S) batteries present a great potential to displace current energy storage chemistries thanks to their energy density that goes far beyond conventional batteries. To promote the development of greener Li-S batteries, closing the existing gap between the quantification of the potential environmental impacts associated with Li-S cathodes and their performance is required. Herein we show a comparative analysis of the life cycle environmental impacts of five Li-S battery cathodes with high sulfur loadings (1.5-15 mg·cm) through life cycle assessment (LCA) methodology and cradle-to-gate boundary. Depending on the selected battery, the environmental impact can be reduced by a factor up to 5. LCA results from Li-S batteries are compared with the conventional lithium ion battery from Ecoinvent 3.6 database, showing a decreased environmental impact per kWh of storage capacity. A predominant role of the electrolyte on the environmental burdens associated with the use of Li-S batteries was also found. Sensitivity analysis shows that the specific impacts can be reduced by up to 70% by limiting the amount of used electrolyte. Overall, this manuscript emphasizes the potential of Li-S technology to develop environmentally benign batteries aimed at replacing existing energy storage systems.
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http://dx.doi.org/10.1016/j.jclepro.2020.124528 | DOI Listing |
Exp Gerontol
December 2024
Department of Nursing, College of Medical Science, Huzhou University, 759 Second Ring Road, Huzhou District, Zhejiang 313000, China.
Objective: The study aimed to explore the short and long-term effects of the Vivifrail-B multicomponent exercise based on society ecosystems theory on physical function in community-dwelling frail older adults.
Methods: 59 older adults were randomly assigned to the intervention (n = 30) and control (n = 29) groups. The exercise was performed thrice a week for 12 weeks, with one offline group training and two at home training.
ACS Appl Mater Interfaces
December 2024
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, Xi'an 710071, P. R. China.
Flexibility enhancement is a pressing issue in the current development of advanced lithium-metal battery applications. Many types of organic polymers are inherently flexible, which can form a composite structure enhancing electrode flexibility. However, organic polymers have a negative influence on the plating and stripping of lithium-metal anodes, and the large number of polymers block the pore of the material, reducing the utilization of the active site.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
State Key Laboratory of Heavy Oil Processing, Institute of New Energy, College of New Energy, China University of Petroleum (East China), Qingdao 266580, China.
The integration of intermittent renewable energy sources into the energy supply has driven the need for large-scale energy storage technologies. Vanadium redox flow batteries (VRFBs) are considered promising due to their long lifespan, high safety, and flexible design. However, the graphite felt (GF) electrode, a critical component of VRFBs, faces challenges due to the scarcity of active sites, leading to low electrochemical activity.
View Article and Find Full Text PDFACS Nano
December 2024
College of Energy, Soochow Institute for Energy and Materials Innovations, Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou 215006, China.
The adsorption-conversion paradigm of polysulfides during the sulfur reduction reaction (SRR) is appealing to tackle the shuttle effect in Li-S batteries, especially based upon atomically dispersed electrocatalysts. However, mechanistic insights into such catalytic systems remain ambiguous, limiting the understanding of sulfur electrochemistry and retarding the rational design of available catalysts. Herein, we systematically explore the polysulfide adsorption-conversion essence via a geminal-atom model system to understand the catalyst roles toward an expedited SRR.
View Article and Find Full Text PDFChemistry
December 2024
Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, CHINA.
Sulfur-rich copolymers have gained a great deal of attention as promising cathode materials in Li-S batteries due to their low cost and naturally uniform sulfur dispersion. However, the poor electrical conductivity and shuttle effect cause rapid capacity decay and low sulfur utilization especially under high sulfur loading and low electrolyte/sulfur ratio. Herein, the Fe1-xS/C dispersed and Se-containing sulfur-rich polymer (FSP) was synthesized by one-pot reaction of ferrocene, trithioiynuric acid with SexSy.
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