The Experts below are selected from a list of 168 Experts worldwide ranked by ideXlab platform

Matthew T Mcdowell - One of the best experts on this subject based on the ideXlab platform.

  • Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, Zhenda Lu, Matthew T Mcdowell
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report Li_ x Si–Li_2O core–shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. Li_ x Si–Li_2O core–shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li_2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The Li_ x Si–Li_2O core–shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries. Anode prelithiation is used to treat the initial capacity loss and low Coulombic efficiency in lithium-ion batteries, but existing methods are not effective. Here, the authors report lithium silicide–lithium oxide core–shell nanoparticles as a promising prelithiation reagent.

  • Dry-air-stable lithium silicide-lithium oxide core-shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, H. W. Lee, Nian Liu, Zhenda Lu, Matthew T Mcdowell, Yi Cui
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report LixSi-Li2O core-shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. LixSi-Li2O core-shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The LixSi-Li2O core-shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries.

Jie Zhao - One of the best experts on this subject based on the ideXlab platform.

  • Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, Zhenda Lu, Matthew T Mcdowell
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report Li_ x Si–Li_2O core–shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. Li_ x Si–Li_2O core–shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li_2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The Li_ x Si–Li_2O core–shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries. Anode prelithiation is used to treat the initial capacity loss and low Coulombic efficiency in lithium-ion batteries, but existing methods are not effective. Here, the authors report lithium silicide–lithium oxide core–shell nanoparticles as a promising prelithiation reagent.

  • Dry-air-stable lithium silicide-lithium oxide core-shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, H. W. Lee, Nian Liu, Zhenda Lu, Matthew T Mcdowell, Yi Cui
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report LixSi-Li2O core-shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. LixSi-Li2O core-shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The LixSi-Li2O core-shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries.

Zhenda Lu - One of the best experts on this subject based on the ideXlab platform.

  • Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, Zhenda Lu, Matthew T Mcdowell
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report Li_ x Si–Li_2O core–shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. Li_ x Si–Li_2O core–shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li_2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The Li_ x Si–Li_2O core–shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries. Anode prelithiation is used to treat the initial capacity loss and low Coulombic efficiency in lithium-ion batteries, but existing methods are not effective. Here, the authors report lithium silicide–lithium oxide core–shell nanoparticles as a promising prelithiation reagent.

  • Dry-air-stable lithium silicide-lithium oxide core-shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, H. W. Lee, Nian Liu, Zhenda Lu, Matthew T Mcdowell, Yi Cui
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report LixSi-Li2O core-shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. LixSi-Li2O core-shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The LixSi-Li2O core-shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries.

Yi Cui - One of the best experts on this subject based on the ideXlab platform.

  • Dry-air-stable lithium silicide-lithium oxide core-shell nanoparticles as high-capacity prelithiation reagents
    Nature Communications, 2014
    Co-Authors: Jie Zhao, H. W. Lee, Nian Liu, Zhenda Lu, Matthew T Mcdowell, Yi Cui
    Abstract:

    Rapid progress has been made in realizing Battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report LixSi-Li2O core-shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. LixSi-Li2O core-shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li2O passivation shell, indicating that these nanoparticles are potentially compatible with Industrial Battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to >100%. The LixSi-Li2O core-shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries.

R Wagner - One of the best experts on this subject based on the ideXlab platform.

  • Large lead/acid batteries for frequency regulation, load levelling and solar power applications
    Journal of Power Sources, 1997
    Co-Authors: R Wagner
    Abstract:

    Lead/acid batteries are suitable for a multitude of utility applications. This paper presents some examples where large lead/acid batteries have been used for frequency regulation, load levelling and solar power applications. The operational experiences are given together with a discussion about the design and technical specialities of these batteries. In 1986, a 17 MW/14 MWh Battery was installed at BEWAG in Berlin which, at that time, was the largest lead/acid Battery in the world. Designed to strengthen Berlin's 'island' system, it was used since the beginning of 1987 for frequency regulation and spinning reserve. In December 1993, when Berlin was connected to the electricity grid, frequency regulation was no longer required but the Battery was still used for spinning reserve. For many years, the Industrial Battery plant of Hagen in Soest has used a large lead/acid Battery for load levelling. The experience gained during more than ten years shows that load levelling and peak shaving can be a marked benefit for customers and utilities with regard to reducing their peak demand. In the summer of 1992, a 216 V and 2200 Ah lead/acid Battery with positive tubular plates and gelled electrolyte was installed at a solar power plant in Flanitzhütte, a small village in the south of Germany which is not connected to the electricity grid. A report is given of the first years of use and includes a discussion about the best charge strategy for such gel batteries when used for solar power applications. © 1997 Published by Elsevier Science S.A.