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  • 1. Agostini, Marco
    et al.
    Lim, Du Hyun
    Brutti, Sergio
    Lindahl, Niklas
    Chalmers University of Technology, Sweden.
    Ahn, Jou Hyeon
    Scrosati, Bruno
    Matic, Aleksandar
    Free-standing 3D-sponged nanofiber electrodes for ultrahigh-rate energy-storage devices2018Ingår i: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 10, nr 40, s. 34140-34146Artikel i tidskrift (Refereegranskat)
  • 2. Bitenc, Jan
    et al.
    Košir, Urban
    Vizintin, Alen
    Lindahl, Niklas
    University of Gothenburg, Sweden.
    Krajnc, Andraž
    Pirnat, Klemen
    Jerman, Ivan
    Dominko, Robert
    Electrochemical mechanism of Al metal–organic battery based on phenanthrenequinone2021Ingår i: Energy Material Advances, ISSN 2692-7640, Vol. 2021Artikel i tidskrift (Refereegranskat)
  • 3. Bitenc, Jan
    et al.
    Lindahl, Niklas
    Chalmers University of Technology, Sweden .
    Vizintin, Alen
    Abdelhamid, Muhammad E.
    Dominko, Robert
    Johansson, Patrik
    Concept and electrochemical mechanism of an Al metal anode ‒ organic cathode battery2020Ingår i: Energy Storage Materials, ISSN 2405-8289, E-ISSN 2405-8297, Vol. 24, s. 379-383Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aluminum (Al) batteries are fundamentally a promising future post-Li battery technology. The recently demonstrated concept of an Al-graphite battery represents some significant progress for the technology, but the cell energy density is still very modest and limited by the quantity of the AlCl3 based electrolyte, as it relies on AlCl4‒ intercalation. For further progress, cathode materials capable of an electrochemical reaction with Al positively charged species are needed. Here such a concept of an Al metal anode ‒ organic cathode battery based on anthraquinone (AQ) electrochemistry with a discharge voltage of 1.1 V is demonstrated. Further improvement of both the cell capacity retention and rate capability is achieved by nano-structured and polymerized cathodes. The intricate electrochemical mechanism is proven to be that the anthraquinone groups undergo reduction of their carbonyl bonds during discharge and become coordinated by AlCl2+ species. Altogether the Al metal anode – AQ cathode cell has almost the double energy density of the state-of-the-art Al-graphite battery.

  • 4. Brown, Rosemary
    et al.
    Vorokhta, Mykhailo
    Khalakhan, Ivan
    Dopita, Milan
    Vonderach, Thomas
    Skála, Tomáš
    Lindahl, Niklas
    Chalmers University of Technology, Sweden.
    Matolínová, Iva
    Grönbeck, Henrik
    Neyman, Konstantin M.
    Matolín, Vladimír
    Wickman, Björn
    Unraveling the Surface Chemistry and Structure in Highly Active Sputtered Pt3Y Catalyst Films for the Oxygen Reduction Reaction2020Ingår i: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 12, nr 4, s. 4454-4462Artikel i tidskrift (Refereegranskat)
  • 5. Dittmer, Staffan
    et al.
    Olofsson, Niklas
    University of Gothenburg, Sweden.
    Weis, J Ek
    Nerushev, O A
    Gromov, A V
    Campbell, Eleanor EB
    In situ Raman studies of single-walled carbon nanotubes grown by local catalyst heating2008Ingår i: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 457, nr 1-3, s. 206-210Artikel i tidskrift (Refereegranskat)
  • 6. Fu, Yifeng
    et al.
    Carlberg, Björn
    Lindahl, Niklas
    Chalmers University of Technology, Sweden.
    Lindvall, Niclas
    Bielecki, Johan
    Matic, Aleksandar
    Song, Yuxin
    Hu, Zhili
    Lai, Zonghe
    Ye, Lilei
    Sun, Jie
    Zhang, Yahui
    Zhang, Yan
    Liu, Johan
    Templated Growth of Covalently Bonded Three-Dimensional Carbon Nanotube Networks Originated from Graphene2012Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 24, nr 12, s. 1576-1581Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A template-assisted method that enables the growth of covalently bonded three-dimensional carbon nanotubes (CNTs) originating from graphene at a large scale is demonstrated. Atomic force microscopy-based mechanical tests show that the covalently bonded CNT structure can effectively distribute external loading throughout the network to improve the mechanical strength of the material.

  • 7. Jankowski, Piotr
    et al.
    Lindahl, Niklas
    Chalmers University of Technology, Sweden.
    Weidow, Jonathan
    Wieczorek, Władysław
    Johansson, Patrik
    Impact of sulfur-containing additives on lithium-ion battery performance: from computational predictions to full-cell assessments2018Ingår i: ACS Applied Energy Materials, E-ISSN 2574-0962, Vol. 1, nr 6, s. 2582-2591Artikel i tidskrift (Refereegranskat)
  • 8. Jankowski, Piotr
    et al.
    Poterała, Marcin
    Lindahl, Niklas
    Chalmers University of Technology, Sweden.
    Wieczorek, Władysław
    Johansson, Patrik
    Chemically soft solid electrolyte interphase forming additives for lithium-ion batteries2018Ingår i: Journal of Materials Chemistry A, Vol. 6, nr 45, s. 22609-22618Artikel i tidskrift (Refereegranskat)
  • 9. Jeong, Goo-Hwan
    et al.
    Olofsson, Niklas
    University of Gothenburg, Sweden.
    Falk, Lena KL
    Campbell, Eleanor EB
    Effect of catalyst pattern geometry on the growth of vertically aligned carbon nanotube arrays2009Ingår i: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 47, nr 3, s. 696-704Artikel i tidskrift (Refereegranskat)
  • 10.
    Lindahl, Niklas
    University of Gothenburg, Sweden.
    Nanoelectromechanical systems from carbon nanotubes and graphene2012Doktorsavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    Carbon nanotubes and graphene have many interesting properties. To exploit the properties in applications their synthesis and incorporation in devices has to be understood and controlled. This thesis is based on experimental studies on synthesis of carbon nanotubes and fabrication of nanoelectromechanical systems from carbon nanotubes and graphene. Vertically aligned nanotube arrays with heights over 800 µm have been grown using acetylene with iron as catalyst on alumina support using thermal chemical vapor deposition. By varying the partial pressure of acetylene it was found that the addition-rate of carbon was proportional to the coverage of acetylene molecules on the catalyst nanoparticle. In certain conditions the macroscopic pattern of the catalyst areas influenced the microscopic properties of the carbon nanotubes. It was shown that the initial carbonprecursor flow conditions could determine the number of walls produced. The amount of carbon incorporated into nanotubes was constant but regions that experienced less carbon precursor gas flow due e.g. to depletion, produced longer but fewer-walled nanotubes. Arrays of vertically aligned nanotubes were shown to deflect as a single unit under electrostatic actuation, making possible the fabrication of varactors. Measurements of deflection were used to determine an effective Young’s modulus of 6 ± 4 MPa. The capacitance of such a device could be reproducibly changed by more than 20 %. Devices based on the nanoelectromechanical properties of few-layer graphene were fabricated and characterized. Electrostatic actuation of buckled beams and membranes led to a ”snap-through” switching at a critical applied voltage. By characterizing this behavior for different sizes and geometries of membranes, it was possible to extract the bending rigidity of bilayered graphene, yielding a value of 35+20 −15 eV. CNTFETs with suspended graphene gates were fabricated. It was shown that a moveable graphene gate could control the conductance of the carbon nanotube and improve the switching characteristics. Inverse sub-threshold slope down to 53 mV per decade were measured at 100 K. The experimental data were compared with theoretical simulations and it was inferred that the subthreshold slope could be improved beyond the thermal limit by improving the design of the device.

  • 11.
    Lindahl, Niklas
    et al.
    Chalmers University of Technology, Sweden; .
    Bitenc, Jan
    Dominko, Robert
    Johansson, Patrik
    Aluminum Metal–Organic Batteries with Integrated 3D Thin Film Anodes2020Ingår i: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 30, nr 51Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Abstract Aluminum 3D thin film anodes fully integrated with a separator are fabricated by sputtering and enable rechargeable aluminum metal batteries with high power performance. The 3D thin film anodes have an approximately four to eight times larger active surface area than a metal foil, which significantly both reduces the electrochemical overpotential, and improves materials utilization. In full cells with organic cathodes, that is, aluminum metal?organic batteries, the 3D thin film anodes provide 165 mAh g?1 at 0.5 C rate, with a capacity retention of 81% at 20 C, and 86% after 500 cycles. Post-mortem analysis reveals structural degradation to limit the long-term stability at high rates. As the multivalent charge carrier active here is AlCl2+, the realistic maximal specific energy, and power densities at cell level are ≈100 Wh kg?1 and ≈3100 W kg?1, respectively, which is significantly higher than the state-of-the-art for Al batteries.

  • 12.
    Lindahl, Niklas
    et al.
    RISE Research Institutes of Sweden, Säkerhet och transport, Elektrifiering och pålitlighet. University of Gothenburg, Sweden.
    Johansson, Patrik
    Chalmers University of Technology, Sweden; ALISTORE-European Research Institute, France.
    Early stage techno-economic and environmental analysis of aluminium batteries2023Ingår i: Energy Advances, ISSN 2753-1457, Vol. 2, nr 3, s. 420-429Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    For any proper evaluation of next generation energy storage systems technological, economic, and environmental performance metrics should be considered. Here conceptual cells and systems are designed for different aluminium battery (AlB) concepts, including both active and passive materials. Despite the fact that all AlBs use high-capacity metal anodes and materials with low cost and environmental impact, their energy densities differ vastly and only a few concepts become competitive taking all aspects into account. Notably, AlBs with high-performance inorganic cathodes have the potential to exhibit superior technological and environmental performance, should they be more reversible and energy efficient, while at the system level costs become comparable or slightly higher than for both AlBs with organic cathodes and lithium-ion batteries (LIBs). Overall, with continued development, AlBs should be able to complement LIBs, especially in light of their significantly lower demand for scarce materials. 

  • 13.
    Lindahl, Niklas
    et al.
    University of Gothenburg, Sweden.
    Midtvedt, Daniel
    Svensson, Johannes
    Nerushev, Oleg A
    Lindvall, Niclas
    Isacsson, Andreas
    Campbell, Eleanor EB
    Determination of the bending rigidity of graphene via electrostatic actuation of buckled membranes2012Ingår i: Nano Letters, ISSN 1530-6984, E-ISSN 1530-6992, Vol. 12, nr 7, s. 3526-3531Artikel i tidskrift (Refereegranskat)
  • 14.
    Lindahl, Niklas
    et al.
    Chalmers University of Technology, Sweden;.
    Zamburlini, Eleonora
    Feng, Ligang
    Grönbeck, Henrik
    Escudero‐Escribano, Maria
    Stephens, Ifan EL
    Chorkendorff, Ib
    Langhammer, Christoph
    Wickman, Björn
    High specific and mass activity for the oxygen reduction reaction for thin film catalysts of sputtered Pt3Y2017Ingår i: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 4, nr 13Artikel i tidskrift (Refereegranskat)
  • 15. Maffre, Marion
    et al.
    Bouchal, Roza
    Freunberger, Stefan A
    Lindahl, Niklas
    Chalmers University of Technology, Sweden;.
    Johansson, Patrik
    Favier, Frédéric
    Fontaine, Olivier
    Bélanger, Daniel
    Investigation of electrochemical and chemical processes occurring at positive potentials in “water-in-salt” electrolytes2021Ingår i: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 168, nr 5Artikel i tidskrift (Refereegranskat)
  • 16.
    Olofsson, Niklas
    et al.
    University of Gothenburg, Sweden.
    Ek-Weis, Johan
    Eriksson, Anders
    Idda, Tonio
    Campbell, Eleanor EB
    Determination of the effective Young’s modulus of vertically aligned carbon nanotube arrays: A simple nanotube-based varactor2009Ingår i: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 20, nr 38Artikel i tidskrift (Refereegranskat)
  • 17. Ponrouch, A.
    et al.
    Bitenc, J.
    Dominko, R.
    Lindahl, Niklas
    Chalmers University of Technology, Sweden;.
    Johansson, P.
    Palacin, M. R.
    Multivalent rechargeable batteries2019Ingår i: Energy Storage Materials, ISSN 2405-8289, E-ISSN 2405-8297, Vol. 20, s. 253-262Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Rechargeable battery technologies based on the use of metal anodes coupled to multivalent charge carrier ions (such as Mg2+, Ca2+ or Al3+) have the potential to deliver breakthroughs in energy density radically leap-frogging the current state-of-the-art Li-ion battery technology. However, both the use of metal anodes and the migration of multivalent ions, within the electrolyte and the electrodes, are technological bottlenecks which make these technologies, all at different degrees of maturity, not yet ready for practical applications. Moreover, the know-how gained during the many years of development of the Li-ion battery is not always transferable. This perspective paper reviews the current status of these multivalent battery technologies, describing issues and discussing possible routes to overcome them. Finally, a brief section about future perspectives is given.

  • 18. Svensson, Johannes
    et al.
    Lindahl, Niklas
    University of Gothenburg, Sweden.
    Yun, Hoyeol
    Seo, Miri
    Midtvedt, Daniel
    Tarakanov, Yury
    Lindvall, Niclas
    Nerushev, Oleg
    Kinaret, Jari
    Lee, SangWook
    Carbon nanotube field effect transistors with suspended graphene gates2011Ingår i: Nano Letters, ISSN 1530-6984, E-ISSN 1530-6992, Vol. 11, nr 9, s. 3569-3575Artikel i tidskrift (Refereegranskat)
  • 19. Wang, Teng
    et al.
    Jeppson, Kjell
    Lindahl, Niklas
    Chalmers University of Technology, Sweden;.
    Campbell, Eleanor EB
    Liu, Johan
    Through silicon vias filled with planarized carbon nanotube bundles2009Ingår i: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 20, nr 48Artikel i tidskrift (Refereegranskat)
  • 20. Wickman, Björn
    et al.
    Fredriksson, Mattias
    Feng, Ligang
    Lindahl, Niklas
    Chalmers University of Technology, Sweden;.
    Hagberg, Johan
    Langhammer, Christoph
    Depth probing of the hydride formation process in thin Pd films by combined electrochemistry and fiber optics-based in situ UV/vis spectroscopy2015Ingår i: Physical Chemistry Chemical Physics, Vol. 17, nr 29, s. 18953-18960Artikel i tidskrift (Refereegranskat)
1 - 20 av 20
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