Structural and electrochemical characteristics of Co and Al co-doped lithium nickelate cathode materials for lithium-ion batteries

Cao, Hui; Xia, Baojia; Xu, Na; Zhang, Chuanfu

doi:10.1016/j.jallcom.2004.01.008

Cited by 67 publications

(42 citation statements)

References 13 publications

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“…To address these shortcomings, LiNi 1−x Co x O 2 (0 < x < 1) compounds have been developed motivated in part by the fact that LiCoO 2 and LiNiO 2 have the same layered ␣-NaFeO 2 structure [4][5][6]. Elements such as Al [7,8], Cr [9], Fe [10], Ga [11], Mg [12], Sn [13], Sr [14], Ti [15], and Zn [16] have been used for partial substitution of Ni or Co to further enhance the electrochemical performance of the LiNi 0.8 Co 0.2 O 2 , which is a promising cathode material among these compounds. Lee [17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

Ju¹,

Ryu²

2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

Ju¹,

Ryu²

2011

Journal of Alloys and Compounds

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“…LiNiO 2 is superior to LiCoO 2 in its lower cost and higher specific capacity [3]; however, it suffers from poor cycling reversibility and thermal instability, which prevents practical uses. More recently, LiNi 0.8 Co 0.15 Al 0.05 O 2 is being considered as a promising cathode material because of its improved stability and electrochemical performance brought by Co and Al substitutions for Ni in LiNiO 2 [4][5][6][7][8]. Since the radii of Co 3+ and Al 3+ are smaller than that of Ni 3+ , the substitutions of these ions result in shrinkage of the a-axis, which is considered to be an origin of stabilizing the layered structure [8].…”

Section: Introductionmentioning

confidence: 99%

In situ XAFS and micro-XAFS studies on LiNi0.8Co0.15Al0.05O2 cathode material for lithium-ion batteries

Nonaka

Okuda

Seno

et al. 2006

Journal of Power Sources

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“…27 Various studies reported beneficial effects of Al doping on LiCoO 2 and LiNiO 2 and NCMs. [28][29][30][31][32][33] ), and found that Al doping reduces the reversible capacity, but significantly improves the thermal stability of the electrode in the de-intercalated state. 36 Al doping in Li-rich-Mn-rich NCMs has also improved the thermal stabilities of these materials.…”

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confidence: 99%

Unraveling the Effects of Al Doping on the Electrochemical Properties of LiNi_0.5Co_0.2Mn_0.3O₂Using First Principles

Dixit

Markovsky

Aurbach

et al. 2017

J. Electrochem. Soc.

124

108

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One of the prevailing approaches to tune properties of materials is lattice doping with metal cations. Aluminum is a common choice, and numerous studies have demonstrated the ability of Al 3+ doping to stabilize different positive electrode materials, such as Li [Ni-Co-Mn] In recent decades, rechargeable batteries have demonstrated tremendous promise as alternate energy storage devices. In particular, Li-ion batteries (LIB) have revolutionized electronic devices, ranging from portable electronics to electric vehicles (EVs), due to their excellent power and energy density.1 The bottleneck of LIB in terms of capacity and performance is often considered to be the nature of the positive electrodes (cathodes).1-6 Among the cathode materials for LIB, layered transition metal (TM) oxides (LiTMO 2, TM = Ni, Co, Mn) are very promising candidates, and in particular LiCoO 2 . However, in spite of the commercialization and wide use of LiCoO 2 in portable LIB, it suffers from several drawbacks. Key disadvantages include high cost and safety concerns associated with cobalt.2-6 Other limitations of LiCoO 2 include low practical capacity (140 mAhg −1 ) and oxygen loss on charge. 7-10 Consequently, in a quest to move beyond LiCoO 2 , a new class of mixed transition metal oxides were designed, wherein Ni and Mn were introduced into the material (i.e. Li[Ni x Co y Mn z ]O 2 or simply NCM).11,12 The Ni-rich variants of these materials have emerged as the most promising low-cost and high capacity alternatives to the already mature LiCoO 2 . 10,13,14,11 These Nirich materials show improved performance; however, the capacities and stabilities are still too low for practical commercialization for EVs. 12Key hurdles in the commercialization of these materials for EV applications are associated with oxygen release at high voltages and cation migration, which leads to structural transformations. 15,16 Recently, it has been demonstrated that oxygen loss and cation migration are concurrent events. 16,17 To address these challenges, lattice doping of cations 18 has been adopted to improve the performance of these materials, and various cations were explored.18-24 A particularly promising dopant for these materials is Al, although its effect is still not fully understood. Early theoretical studies proposed that Al substitution in LiCoO 2 25 and NCMs 26 could increase the intercalation potential, and these predictions were verified experimentally. 27 Various studies reported beneficial effects of Al doping on LiCoO 2 and LiNiO 2 and NCMs. ), and found that Al doping reduces the reversible capacity, but significantly improves the thermal stability of the electrode in the de-intercalated state.36 Al doping in Li-rich-Mn-rich NCMs has also improved the thermal stabilities of these materials. 37 In a detailed theoretical study, Dianat et al. studied the effect of Al doping on Li-Mn-Ni-O based cathode materials.38 They reported that Al doping stabilizes the partially intercalated states, but increases the Li-diffusion barriers. Park et al. studie...

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Structural and electrochemical characteristics of Co and Al co-doped lithium nickelate cathode materials for lithium-ion batteries

Cited by 67 publications

References 13 publications

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

In situ XAFS and micro-XAFS studies on LiNi0.8Co0.15Al0.05O2 cathode material for lithium-ion batteries

Unraveling the Effects of Al Doping on the Electrochemical Properties of LiNi_0.5Co_0.2Mn_0.3O₂Using First Principles

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Structural and electrochemical characteristics of Co and Al co-doped lithium nickelate cathode materials for lithium-ion batteries

Cited by 67 publications

References 13 publications

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core–shell structure as cathode material for Li-ion batteries

In situ XAFS and micro-XAFS studies on LiNi0.8Co0.15Al0.05O2 cathode material for lithium-ion batteries

Unraveling the Effects of Al Doping on the Electrochemical Properties of LiNi0.5Co0.2Mn0.3O2Using First Principles

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Unraveling the Effects of Al Doping on the Electrochemical Properties of LiNi_0.5Co_0.2Mn_0.3O₂Using First Principles