SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Arvidsson Patrik 1969 ) "

Sökning: WFRF:(Arvidsson Patrik 1969 )

  • Resultat 1-12 av 12
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Arvidsson, Rickard, 1984, et al. (författare)
  • Energy use and climate change improvements of Li/S batteries based on life cycle assessment
  • 2018
  • Ingår i: Journal of Power Sources. - : Elsevier BV. - 0378-7753. ; 383, s. 87-92
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a life cycle assessment (LCA) study of a lithium/sulfur (Li/S) cell regarding its energy use (in electricity equivalents, kWhel) and climate change (in kg carbon dioxide equivalents, CO2 eq) with the aim of identifying improvement potentials. Possible improvements are illustrated by departing from a base case of Li/S battery design, electricity from coal power, and heat from natural gas. In the base case, energy use is calculated at 580 kWhel kWh−1 and climate change impact at 230 kg CO2 eq kWh−1 of storage capacity. The main contribution to energy use comes from the LiTFSI electrolyte salt production and the main contribution to climate change is electricity use during the cell production stage. By (i) reducing cell production electricity requirement, (ii) sourcing electricity and heat from renewable sources, (iii) improving the specific energy of the Li/S cell, and (iv) switching to carbon black for the cathode, energy use and climate change impact can be reduced by 54 and 93%, respectively. For climate change, our best-case result of 17 kg CO2 eq kWh−1 is of similar magnitude as the best-case literature results for lithium-ion batteries (LIBs). The lithium metal requirement of Li/S batteries and LIBs are also of similar magnitude.
  •  
2.
  • Arvidsson, Rickard, 1984, et al. (författare)
  • Potential improvements of the life cycle environmental impacts of a Li/S battery cell
  • 2018
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • The lithium sulfur (Li/S) battery is a promising battery chemistry for two reasons: it requires no scarce metals apart from the lithium itself and it brings the promise of high specific energy density at the cell level. However, the environmental impacts of this battery type remain largely unstudied. In this study, we conducted a life cycle assessment (LCA) of the production of an Li/S cell to calculate these impacts. The anode consists of a lithium foil and the cathode consists of a carbon/sulfur composite. The electrolyte is a mixture of dioxalane, dimethoxyethane, lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium nitrate. The current collector for the cathode is an aluminium foil and a tri-layer membrane of polypropylene and polyethylene acts as separator. The functional unit of the study is 1 kWh specific energy storage. Three key environmental impacts were considered: energy use, climate change and lithium requirement. In our baseline scenario, we consider the pilot-scale production of a battery with a specific energy of 300 kWh/kg, having the mesoporous material CMK-3 as carbon material in the carbon/sulfur cathode, and using coal power and natural gas heat as energy sources. This scenario results in an energy use of 580 kWh/kWhstored and a climate change impact of 230 kg CO2eq/kWhstored. The main contributor to energy use is the LiTFSI production and the main contributor to climate change is electricity use during cell production. We then model a number of possible improvements sequentially: (1) reduction of cell production electricity requirement due to production at industrial-scale, (2) sourcing of electricity and heat from renewable instead of fossil sources (i.e. solar power and biogas heat), (3) improvement of the specific energy of the Li/S cell to 500 kWh/kg and (4) a shift of the carbon material in the cathode to carbon black (without considering changes in performance). By implementing all these four improvements, energy use and climate change impact can be reduced by an impressive 54 and 93%, respectively. In particular, the improvements related to industrial-scale production and sourcing of renewable energy are considerable, whereas the shift of carbon material is of minor importance. For climate change, the best-case result of 17 kg CO2eq/kWhstored is similar to the best-case results reported in the scientific literature for lithium-ion batteries (LIBs). Regarding lithium requirement, the lithium metal requirement of Li/S batteries and LIBs are also of similar magnitude (0.33-0.55 kg/kWhstored and 0.2 kg/kWhstored, respectively). Using different allocation approaches did not alter the main conclusions of the study.
  •  
3.
  • Wickerts, Sanna, 1992, et al. (författare)
  • Energy storage with less metal scarcity? Prospective life cycle assessment of lithium-sulfur batteries with a focus on mineral resources.
  • 2021
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • In order to reduce the global dependency on fossil fuels by adopting renewable energy technologies and advancing electromobility, batteries are a key technology. Lithium-ion batteries (LIBs) are currently the dominant rechargeable battery technology, mainly due to their high energy density. However, most LIBs contain a number of geochemically scarce metals, e.g.cobalt, lithium and nickel. The production of LIBs is furthermore associated with considerable environmental impacts. Battery researchers and companies therefore try to develop the next generation batteries (NGBs) with the same or even higher energy densities than LIBs, while requiring less of scarce metals and causing lower environmental impacts. One promising NGB technology is the lithium-sulfur (Li-S) battery, with a potential to significantly improve energy density as compared to current state-of-the-art LIBs. Although Li-S batteries still face a number of scientific and technical challenges, they have a significant advantage over LIBs from a resource point of view: the cells do not require any scarce metals besides lithium. Using prospective life cycle assessment, we will assess the life-cycle environmental impacts of Li-S batteries and compare them to those of LIBs, both modeled at large-scale production. In order to investigate the effect of using less scarce metals on resource impacts, the mineral resource impact category will be given extra attention. We will therefore include a range of mineral resource impact assessment methods, e.g. the abiotic depletion indicator, the surplus ore indicator, and the recently developed crustal scarcity indicator, which takes an explicit long-term perspective on elemental resources in the Earth’s crust. The overall aim is thus to compare the prospective life-cycle impacts of this particular NGB to those of LIBs, with a focus on mineral resources.
  •  
4.
  • Wickerts, Sanna, 1992, et al. (författare)
  • How environmentally friendly are batteries with no rare or critical materials?
  • 2022
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • Rechargeable batteries are increasingly used in a number of applications, such as consumer electronics, electric vehicles, and stationary energy storage. An increased use in the latter two applications is envisioned to reduce greenhouse gas emissions.However, the dominant rechargeable battery technology – the lithium-ion battery (LIB) – impacts the environment in several ways throughout its life cycle. In addition, LIBs require critical and/or geochemically scarce materials, such as lithium, natural graphite, and sometimes nickel and cobalt. One promising next generation battery (NGB) is the sodium-ion battery (SIB). While other NGBs can provide higher energy densities, the SIB technology holds great promise from a resource point of view, since it can be made to contain mostly low-cost, abundant and readily available elements, such as sodium and iron. In addition, the manufacturing processes and equipment developed for LIBs can in principle be re-used, enabling convenient scale-up of production. We here assess the life-cycle impacts of a specific SIB with a low content of scarce metals using prospective life cycle assessment (LCA). The SIB is assumed to be a mature technology produced at large scale and this we accomplish by using data from a small-scale producer and scale these up using available large-scale factory data for LIB production. We use a functional unit of 1 kWh of installed battery cell storage capacity and focus on climate and mineral resource impacts, since those have been highlighted in several publications and guidance documents as particularly important to address in LCAs of batteries. Different shares of renewables are considered in energy supply scenarios, along with scenarios for specific energy density developments. The impacts are compared to those of large-scale produced LIBs and to another NGB – the lithium-sulfur battery. To investigate mineral resource impacts of the different technologies in depth, we include two resource impact assessment methods, the crustal scarcity indicator and the surplus ore potential. The aims of the study are (i) to assess the prospective life cycle impacts of the SIB technology in order to reveal whether it is preferable to other battery technologies from an environmental and resource point of view, and (ii) to understand the environmental profile of the SIB in order to identify hotspots.
  •  
5.
  • Wickerts, Sanna, 1992, et al. (författare)
  • Prospective Life Cycle Assessment of Lithium-Sulfur Batteries for Stationary Energy Storage
  • 2023
  • Ingår i: ACS Sustainable Chemistry & Engineering. - 2168-0485. ; 11:26, s. 9553-9563
  • Tidskriftsartikel (refereegranskat)abstract
    • The lithium-sulfur (Li-S) battery represents a promisingnext-generationbattery technology because it can reach high energy densities withoutcontaining any rare metals besides lithium. These aspects could giveLi-S batteries a vantage point from an environmental and resourceperspective as compared to lithium-ion batteries (LIBs). Whereas LIBsare currently produced at a large scale, Li-S batteries are not. Therefore,prospective life cycle assessment (LCA) was used to assess the environmentaland resource scarcity impacts of Li-S batteries produced at a largescale for both a cradle-to-gate and a cradle-to-grave scope. Six scenarioswere constructed to account for potential developments, with the overallaim of identifying parameters that reduce (future) environmental andresource impacts. The specific energy density and the type of electrolytesalt are the two most important parameters for reducing cradle-to-gateimpacts, whereas for the cradle-to-grave scope, the electricity source,the cycle life, and, again, the specific energy density, are the mostimportant. Additionally, we find that hydrometallurgical recyclingof Li-S batteries could be beneficial for lowering mineral resourceimpacts but not necessarily for lowering other environmental impacts. Life cycle assessment of lithium-sulfurbatteries indicatesa similar environmental impact but a potentially lower mineral resourceimpact compared to lithium-ion batteries.
  •  
6.
  • Wickerts, Sanna, 1992, et al. (författare)
  • Prospective life cycle assessment of sodium-ion batteries made from abundant elements
  • 2024
  • Ingår i: Journal of Industrial Ecology. - 1530-9290 .- 1088-1980. ; 28:1, s. 116-129
  • Tidskriftsartikel (refereegranskat)abstract
    • Batteries are enablers for reducing fossil-fuel dependency and climate-change impacts. In this study, a prospective life cycle assessment (LCA) of large-scale production of two different sodium-ion battery (SIB) cells is performed with a cradle-to-gate system boundary. The SIB cells modeled have Prussian white cathodes and hard carbon anodes based only on abundant elements and thus constitute potentially preferable options to current lithium-ion battery (LIB) cells from a mineral resource scarcity point of view. The functional unit was 1 kWh theoretical electricity storage capacity, and the specific energy density of the cells was 160 Wh/kg. Data for the cathode active material come from a large-scale facility under construction and data for the SIB cell production is based on a large-scale LIB cell gigafactory. For other SIB cell materials, prospective inventory data was obtained from a generic eight-step procedure developed, which can be used by other LCA practitioners. The results show that both SIB cells indeed have considerably lower mineral resource scarcity impacts than nickel-manganese-cobalt (NMC)-type LIB cells in a cradle-to-gate perspective, while their global warming impacts are on par. Main recommendations to SIB manufacturers are to source fossil-free electricity for cell production and use hard carbon anodes based on lignin instead of phenolic resin. Additionally, since none of the assessed electrolytes had clearly lower cradle-to-gate impacts than any other, more research into SIB electrolyte materials with low environmental and resource impacts should be prioritized. An improvement of the SIB cell production model would be to obtain large-scale production data specific to SIB cells.
  •  
7.
  • Arvidsson, Patrik, 1969- (författare)
  • Assessment of participation in people with a mild intellectual disability
  • 2013
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The overall aim of this doctoral thesis was to explore an assessment of participation according to the International Classification of Functioning, Disability and Health (ICF) in people with a mild intellectual disability.Study I used secondary data and explored how participation can be assessed. Study II-IV explored participation empirically regarding 68 everyday activities from all nine life domains according to the ICF. Study II explored assessment of self-rated participation by investigating to what extent perceived ability, actual performance and perceived importance correlated. Study III-IV explored the contribution of perceived importance to an assessment of participation; study III by investigating frequencies of everyday activities regarding performance and importance separately as well as regarding combined measures of performance and perceived importance, and study IV by comparing proxy ratings with self-rated measures regarding ability and measures of participation. Study III also correlated measures of participation with a single-item measure of subjective general well-being and study II and IV investigated internal consistency in terms of Cronbach’s alpha. Study II and III included 55 and 69 individuals with intellectual disability respectively. Study IV included 40 individuals with intellectual disability and 40 proxy persons. The informants from the target group were partly the same.Study II and IV supported the suggestions from study I that participation should be assessed by self-ratings and study II found that this is an appropriate method also to people with a mild intellectual disability. Study III showed that participation is related to subjective well-being. Study III-IV found somewhat different results if measuring participation as performance solely or as a combination of performance and perceived importance. Overall, the results of the thesis suggest that performance solely might be sufficient to assess participation at a group level but in a clinical context, when the knowledge of a certain individual is of interest, the perceived aspect of involvement is necessary to include in an assessment of participation.
  •  
8.
  • Arvidsson, Patrik, 1969-, et al. (författare)
  • Important aspects of participation and participation restrictions in people with a mild intellectual disability
  • 2014
  • Ingår i: Disability and Rehabilitation. - : Informa UK Limited. - 0963-8288 .- 1464-5165. ; 36:15, s. 1264-1272
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: This study explored a possibility to assess the concepts of participation and participation restrictions in the International Classification of Functioning, Disability and Health (ICF) by combining self-ratings of the perceived importance with the actual performance of different everyday activities in people with a mild intellectual disability.Method: Structured interviews regarding 68 items from the ICF activity/participation domain were conducted (n = 69). The items were ranked by perceived importance, performance and by combined measures. Furthermore, the measures were related to a single question about subjective general well-being.Results: Rankings of performance highlighted about the same items as "important participation", while rankings of low performance addressed quite different items compared with "important participation restriction". Significant correlations were found between subjective general well-being and high performance (r = 0.56), high performance/high importance (important participation) (r = 0.56), low performance (r = -0.56) and low performance/high importance (important participation restriction; r -0.55).Conclusions: The results support the clinical relevance of the ICF and the studied selection of 68 items. Although performance only may sometimes be a relevant aspect, knowledge about the relationship between the perceived importance and the actual performance is essential for clinical interventions and for research aiming to understand specific needs regarding participation.
  •  
9.
  • Arvidsson, Rickard, 1984, et al. (författare)
  • Life cycle assessment of Biodiesel - Hydrotreated oil from rape, oil palm or Jatropha
  • 2008
  • Ingår i: Annual Poster Exhibition at the Department of Chemical and Biological Engineering, Chalmers University of Technology, Mars 6th, 2008, Göteborg, Sweden.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • There is a need for fuels based on renewable resources that have acceptable emission profiles and that are functional for truck engines used in heavy vehicles. Volvo has participated in the CONCAWE/EUCAR/JRC WTW study, which analyzed a number of candidate fuels, several process routes to produce each fuel as well as different raw material choices. However, the CONCAWE study did not include any second generation hydrogenated vegetable oil type biodiesel. In the present study, Volvo and Chalmers investigate and benchmark hydrogenated vegetable oils. Different production routes from different proposed raw materials are investigated using life cycle assessment modeling. Raw materials considered are oil from rape seed (grown in Germany), palm oil (grown in Malaysia) and oil from the fruits of Jatropha curcas (grown in India). The raw material is converted into hydrogenated oil at a production site in northern Europe and used at the European market. Results regarding life cycle global warming potential and energy use are presented.
  •  
10.
  • Chavez, Zuhara, et al. (författare)
  • From Surviving to Thriving : Industry 5.0 at SMEs Enhancing Production Flexibility
  • 2023
  • Ingår i: Advances in Production Management Systems. - : Springer Nature. ; 689 AICT, s. 789-802
  • Konferensbidrag (refereegranskat)abstract
    • This study explores how human-centered digitalization can contribute to the flexibility and adaptability of small and medium-sized enterprise (SME) production processes, resulting in more resilient systems. This study explains the relationship between digital technologies and production system features through progressively more human-centric stages of a digitalized manufacturing system. The authors present a case study of an SME that implemented a human-centric strategy, placing people's needs and interests at the center of its processes, leading to more flexible and inclusive production processes and consistent with the goals of Industry 5.0. The results suggest that a digitalized working method that considers human capabilities and needs can enable a more diverse workforce and the rapid setup of new and additional production processes, thus helping SMEs respond to supply chain disruptions. The findings have implications for managers and practitioners interested in driving or supporting the transition of SMEs to human-centric, resilient, and sustainable businesses.
  •  
11.
  • Fröling, Morgan, 1966, et al. (författare)
  • Life Cycle Assessment of Second Generation Biodiesel: Biomass to Liquid
  • 2008
  • Ingår i: Designing Pathways for a Sustainable World: At Scale, in Time, and for All, AGS Annual Meeting, MIT, Cambridge, MA. USA, January 28-30 2008. ; , s. abstract in proceedings-
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)
  •  
12.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-12 av 12

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy