Sökning: "sodium ion"

Visar resultat 16 - 20 av 138 avhandlingar innehållade orden sodium ion.

1. 16. Polymers at the Electrode-Electrolyte Interface : Negative Electrode Binders for Lithium-Ion Batteries

   Författare :Fabian Jeschull; Daniel Brandell; Bernard Lestriez; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; binder; CMC-Na; PAA; graphite; silicon; lithium-ion battery; photoelectron spectros-copy; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Sammanfattning : We are today experiencing an increasing demand for high energy density storage devices like the lithium-ion battery for applications in portable electronic devices, electric vehicles (EV) and as interim storage for renewable energy. High capacity retention and long cycle life are prerequisites, particularly for the EV market. LÄS MER

3. 17. Modelling of Battery Electrolyte Interactions

   Författare :Gustav Åvall; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion batteries; semi-empirical Methods.; sodium-ion batteries; ab initio molecular dynamics; electrolytes; density functional theory;

   Sammanfattning : The rechargeable lithium-ion battery (LIB), powering our portable electronics, has transformed our everyday lives. Even though the success of the LIB there is a need for next generation batteries, due to a lack of abundant lithium and a need for greater performance and sustainable chemistries, in order to move towards a sustainable society with applications such as hybrid and electrical vehicles (EVs) and large scale energy storage for solar and wind power. LÄS MER

4. 18. Titanium-Based Negative Electrode Materials for Rechargeable Batteries : In Search of the Redox Reactions

   Författare :Tatiana Koriukina; Kristina Edström; Egbert Figgemeier; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion batteries; sodium-ion batteries; MXenes; perovskite oxides; redox reactions; XPS; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : Rechargeable batteries, particularly, lithium-ion batteries (LIBs) have proven to be stable and reliable energy storage devices over the past few decades. The rapid demands regarding battery applications and the pressure to move away from the fossil fuel era drive the search for new materials for better rechargeable batteries for electric vehicles, renewable energy storage, and portable electronics. LÄS MER

5. 19. Some factors affecting the amount of residual phase lignin during kraft pulping

   Författare :Mikael E. Lindström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Deligniflcation; Residual phase lignin; Hydrogensulfide ion; Hydroxide ion; Polysulfides; Ionic strength; Temperature; Lignin; Kraftpulping; Selectivity; viscosity; Kappa number; chemical degradation; Disproportionation; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Sammanfattning : The amount of lignin which needs to be removed according to the slow residual delignification phase in kraft pulping, i e residual phase lignin, has been studied as a function of the process conditions. The variebles studied were the concentrations of hydroxide ions, hydrogensulfide ions, sodium ions (ionic strength) and temperature. LÄS MER

7. 20. Operando X-Ray Imaging of Battery Electrodes

   Författare :Antoine Klein; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; lithium-ion batteries; XTM; sodium-ion batteries; lithium-sulfur batteries; SAXS.; X-ray imaging;

   Sammanfattning : Batteries are now part of our daily life as they enable easy usage of portable devices and are now essential for us to travel, communicate, work, read, or listen to music. The diversity of battery applications continuously increases and new demands of for instance capacity, charge time and sustainability have emerged. LÄS MER