Effect of Al Addition on Formation of Layer-Structured LiNiO2

Lin, Shun-Chieh; Fung, Kuan‐Zong; Hon, Yi-Ming; Hon, Min–Hsiung

doi:10.1006/jssc.2002.9624

Cited by 28 publications

(29 citation statements)

References 22 publications

(22 reference statements)

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“…Aluminum segregation within the slabs was confirmed by a combination of synchrotron XRD, ED, EDX, and EELS on single particles on the nm scale, but also between different particles . In this respect, the claims of homogeneous Al doping and that the presence of Al accelerates the formation of the LNO layered structure are surprising . Structural studies revealed that Al does not significantly improve the layered character of LNO, and a significant fraction of Ni 2+ (ca.…”

Section: Elemental Substitution/dopingmentioning

confidence: 99%

There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

et al. 2019

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This Review provides a comprehensive overview of LiNiO2 (LNO), almost 30 years after its introduction as a cathode active material. We aim to highlight the physicochemical peculiarities that make LNO a complex material in every aspect. We specifically stress the effect of the Li off‐stoichiometry (Li1−zNi1+zO2) on every property of LNO, especially the electrochemical ones. The key instability issues that plague the compound and the strategies that have been implemented so far to overcome them are discussed in detail. Finally, the open questions that remain to be addressed by the scientific community are summarized, and the research directions that seem the most promising to enable LNO to be fully exploited are elucidated.

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Section: Elemental Substitution/dopingmentioning

confidence: 99%

There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

et al. 2019

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“…Mg, 42 Al, 43 Co, [44][45][46][47][48] Ga 49 etc.). All have in common that they allow for a much easier synthesis of the active material.…”

Section: Lithium Cobalt Oxide; Licoomentioning

confidence: 99%

Review—Recent Advances and Remaining Challenges for Lithium Ion Battery Cathodes

Schipper

Erickson

Erk

et al. 2016

J. Electrochem. Soc.

620

497

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Lithium ion batteries have become an integral part of our daily lives. Among a number of different cathode materials nickel-rich LiNi x Co y Mn z O 2 is particularly interesting. The material can deliver high capacities of ∼195 mAh g −1 putting it on the map for electric vehicles. With an increasing nickel content, a number of issues arise in the material limiting its performance. The Li/Ni mixing, highly reactive surface and formation of micro cracks are the most pressing ones. An overview of recent literature exploring these phenomena is herein summarized and were applicable solutions will be highlighted. With the advent of lithium ion batteries (LIB) in 1991 came a rapidly increasing development of consumer electronics.1,2 Soon LIB were the power source of choice for manufacturer of laptop computers and cell phones. While smart phones are getting smaller and have to operate more energy demanding applications LIB have to keep up with the pace. Cell manufactures have developed more refined ways to assemble cells leading to high energy densities of modern LIB for consumer applications. 3,4 In the meantime, scientists have developed better active materials and are constantly improving over existing ones. 5 The early LIB used lithium cobalt oxide (LCO) as cathode and graphite as anode material. LCO has a high tap density making it an ideal choice for small devices. The battery market has grown tremendously over the last 35 years and is expected to increase even more rapidly within the next years. 6 With the new market segment of electrical vehicles (EV) becoming more important every year LIB have found an additional application with a huge potential. Even though fuel cells are a natural competitor for LIB the large commitment necessary to build a hydrogen infrastructure plays into the hands of eager battery suppliers.Electrical propulsion needs battery materials with high capacities to satisfy consumer demands of a ∼500 km driving range long cycle life.4,7 Several materials have been identified as viable candidates for EVs ranging from layered mixed transition metal oxides, layered lithium rich materials and lithium sulfur batteries. [8][9][10][11] The technologically most advanced material option is layered nickel rich LiNi x Co y Mn z O 2 (NCM, x > 0.6) cathodes. The current generation of some EVs is already employing NCM523. Unfortunately, the implementation of higher nickel contents still needs to overcome a number of challenges to be viable. The review at hand will outline the development of the NCM material family with the first emphasis being on the individual endmembers LiCoO 2 , LiNiO 2 and LiMnO 2 . Problems and recent advances of these materials will be outlined. The second emphasis will be on the layered material LiNi x Co y Mn z O 2 with a focus on nickel rich materials. Problems and attempted solutions to mitigate them will be presented.= These authors contributed equally to this work.* Electrochemical Society Fellow. z E-mail: schippf@biu.ac.il Lithium Cobalt Oxide; LiCoO 2The first lithium intercal...

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“…Aluminium‐Entmischung innerhalb der Schichten wurde durch eine Kombination von Synchrotron‐XRD, ED, energiedispersiver Röntgenspektroskopie (EDX) und Elektronenenergieverlust‐Spektroskopie (electron energy loss spectroscopy, EELS) innerhalb einzelner Partikel im nm‐Bereich, aber auch zwischen verschiedenen Partikeln bestätigt . In dieser Hinsicht sind Berichte über homogene Al‐Dotierung und die Beobachtung, dass die Gegenwart von Al die Bildung der LNO‐Schichtstruktur beschleunigt, überraschend . Strukturuntersuchungen ergaben, dass Al den Schichtcharakter von LNO nicht signifikant verbessert und ein signifikanter Anteil von Ni 2+ (ca.…”

Section: Elementsubstitution Und Dotierungunclassified

Hin und zurück – die Entwicklung von LiNiO₂ als Kathodenaktivmaterial

et al. 2019

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Wir geben in diesem Aufsatz einen umfassenden Überblick über LiNiO2 (LNO), fast 30 Jahre nach seiner ursprünglichen Einführung als Kathodenaktivmaterial. Ziel ist es, diejenigen physikalisch‐chemischen Eigenschaften hervorzuheben, die LNO in jeder Hinsicht zu einem komplexen Material machen. Der Effekt der Lithium‐Nichtstöchiometrie (Li1−zNi1+zO2) spielt hierbei eine wichtige Rolle. Sie beeinflusst jede Eigenschaft von LNO, besonders das elektrochemische Verhalten. Die wichtigsten Instabilitätsprobleme, die das Material beeinträchtigen, und die Strategien, die bislang implementiert wurden, um diese Probleme zu lösen, werden im Detail diskutiert. Schließlich werden die wichtigsten offenen Fragen, die vor einer nachhaltigen Nutzung von LNO noch zu klären sind, zusammengefasst, und es wird erläutert, welche Forschungsrichtungen vielversprechend sind, um das volle Potential von LNO zu nutzen.

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Effect of Al Addition on Formation of Layer-Structured LiNiO2

Cited by 28 publications

References 22 publications

There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

Review—Recent Advances and Remaining Challenges for Lithium Ion Battery Cathodes

Hin und zurück – die Entwicklung von LiNiO₂ als Kathodenaktivmaterial

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Effect of Al Addition on Formation of Layer-Structured LiNiO2

Cited by 28 publications

References 22 publications

There and Back Again—The Journey of LiNiO2 as a Cathode Active Material

There and Back Again—The Journey of LiNiO2 as a Cathode Active Material

Review—Recent Advances and Remaining Challenges for Lithium Ion Battery Cathodes

Hin und zurück – die Entwicklung von LiNiO2 als Kathodenaktivmaterial

Contact Info

Product

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There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

There and Back Again—The Journey of LiNiO₂ as a Cathode Active Material

Hin und zurück – die Entwicklung von LiNiO₂ als Kathodenaktivmaterial