Synthesis and search for superconductivity in LiBC

Bharathi, A.; Balaselvi, S. Jemima; Premila, M.; Sairam, T.N.; Reddy, G.L.N.; Sundar, C. S.; Hariharan, Y.

doi:10.1016/s0038-1098(02)00474-x

Cited by 48 publications

(41 citation statements)

References 17 publications

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“…[84][85][86][87][88] LiBC has advantages in terms of not only low reactivity with complex hydrides but also capacity due to its light-weight constituent elements. If Li + ions can be reversibly extracted from the crystal structure of LiBC, as shown in the following reaction, a signifi cantly high capacity (for example, 450 mAh g − 1 for x = 0.5) may theoretically be obtained .…”

Section: Possible Application Of Complex Hydrides As Solid Electrolytesmentioning

confidence: 99%

Lithium Fast‐Ionic Conduction in Complex Hydrides: Review and Prospects

Matsuo¹,

Orimo²

2011

Advanced Energy Materials

242

261

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Complex hydrides exhibit various energy-related functions such as hydrogen storage, microwave absorption, and neutron shielding. Furthermore, another novel energy-related function was recently reported by the authors; lithium fast-ionic conduction, which suggests that complex hydrides may be a potential candidate for solid electrolytes in lithium-ion batteries. This review presents the recent progress in the development of lithium fast-ionic conductors of complex hydrides. First, the fast-ionic conduction in LiBH 4 as a result of clarifying the mechanism of microwave absorption is presented, and then the conceptual development of complex hydrides as a new type of solid-state lithium fast-ionic conductors in LiBH 4 -, LiNH 2 -, and LiAlH 4 -based complex hydrides is discussed. Finally, the future prospects of this study from both application and fundamental viewpoints are described: possible use as solid electrolytes for batteries, formation of ionic liquids in complex hydrides, and similarity between complex hydrides and Laves-phase metal hydrides.Motoaki Matsuo and Shin-ichi Orimo* Figure 1 . Crystal structures of the a) LT and b) HT phases of LiBH 4 . [7][8][9]

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Section: Possible Application Of Complex Hydrides As Solid Electrolytesmentioning

confidence: 99%

Lithium Fast‐Ionic Conduction in Complex Hydrides: Review and Prospects

Matsuo¹,

Orimo²

2011

Advanced Energy Materials

242

261

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“…A number of groups have synthesized and begun to characterize LiBC. [17,18,21,19,20,22] There are two reports of deintercalation of Li. Zhao, Klavins, and Liu reported evaporation of Li upon vacuum annealing, with no sign of superconductivity in the annealed samples.…”

Section: A LI 1−x Bcmentioning

confidence: 99%

Electron-phonon coupling in MgB2-like materials: its magnitude and its limits

Pickett¹

2003

Braz. J. Phys.

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That very strong coupling of the B-B bond-stretching E2g branch of phonons to the B 2pσ bonding hole states is responsible for the remarkable superconductivity in MgB 2 is well established. This entirely new manner of driving the superconducting Tc to high levels requires additional analysis. Here recent findings, such as how this strong coupling is related to possible structural instability, are discussed, and investigation into the practical limits of such coupling is initiated.

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“…Motivated by the prediction, the hole-doped Li x BC (x < 1) has been tried to synthesize by evacuation [6,7], Li-flux [8] and oxidation methods [9]. For example, Zhao et al have prepared Li x BC (x = 0.63-0.8) by vacuum deintercalation of LiBC at temperature ranging from 873 to 1073 K [7].…”

Section: Introductionmentioning

confidence: 99%