Exploring the working mechanism of Li+ in O3-type NaLi0.1Ni0.35Mn0.55O2 cathode materials for rechargeable Na-ion batteries

Zheng, Shiyao; Zhong, Guiming; McDonald, Matthew J.; Gong, Zhengliang; Liu, Rui; Wen, Wen; Yang, Chun Cheng; Yang, Yong

doi:10.1039/c6ta02230h

Cited by 104 publications

(95 citation statements)

References 52 publications

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“…To directly record the formation process of O3‐NaLNMCM material during the calcination process, scanning electron microscopy (SEM) and in situ XRD at different temperatures were executed (Figures S1 and S2, Supporting Information). As shown in Figure a,b, XRD patterns of O3‐NaNM and O3‐NaLNMCM are ascribed to the O3‐type α‐NaFeO 2 layered structure with rhombohedral R

\overset{true¯}{3}

m space group . Figure c displays that the crystal structures of typical O3‐type Na‐based layered oxides (view along b axis and c axis) are composed of alternately stacking of edge sharing TMO 6 octahedral layers and Na ions layers.…”

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confidence: 86%

“…Many efforts have been devoted toward seeking novel Na + extraction/insertion compounds to realize high‐performance SIBs . Among the various available cathode materials, O3‐type layered oxides, NaTMO 2 (where TM refers to transition metal), are considered to be one of the most fascinating candidates due to their sufficient sodium‐ion reservoirs (an important factor in full cell system), high‐energy density, and simple synthesis process . Nevertheless, the frequent multiple phase transformations and sluggish kinetics in O3‐type cathodes are prone to result in rapid capacity decline and deteriorated rate capability.…”

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confidence: 99%

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Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

et al. 2018

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As one of the most promising cathodes for rechargeable sodium-ion batteries (SIBs), O3-type layered transition metal oxides commonly suffer from inevitably complicated phase transitions and sluggish kinetics. Here, a Na[Li Ni Mn Cu Mg ]O cathode material with the exposed {010} active facets by multiple-layer oriented stacking nanosheets is presented. Owing to reasonable geometrical structure design and chemical substitution, the electrode delivers outstanding rate performance (71.8 mAh g and 16.9 kW kg at 50C), remarkable cycling stability (91.9% capacity retention after 600 cycles at 5C), and excellent compatibility with hard carbon anode. Based on the combined analyses of cyclic voltammograms, ex situ X-ray absorption spectroscopy, and operando X-ray diffraction, the reaction mechanisms behind the superior electrochemical performance are clearly articulated. Surprisingly, Ni /Ni and Cu /Cu redox couples are simultaneously involved in the charge compensation with a highly reversible O3-P3 phase transition during charge/discharge process and the Na storage is governed by a capacitive mechanism via quantitative kinetics analysis. This optimal bifunctional regulation strategy may offer new insights into the rational design of high-performance cathode materials for SIBs.

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confidence: 86%

mentioning

confidence: 99%

Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

et al. 2018

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Section: Introductionmentioning

confidence: 99%

“…Among various candidates, layered transition metal oxides, transition metal sulfides and fluorides were extensively studied. Prussian blue analogues and polymers have attracted considerable attention globally in terms of higher specific capacity but delivers poor cycling stability . Recently, a polyanionic compound (Na 3 V 2 (PO 4 ) 3 ) with a Na super ionic conductor (NASICON) structure possessing stable 3D open framework for the rapid Na‐ion migration attracted tremendous attention in the search of cathode materials for SIBs as it facilitated stable structure, high voltage profile, excellent reversible capacity and cycling performance .…”

Section: Introductionmentioning

confidence: 99%

Effect of Crystal Structure and Morphology on Na₃V₂(PO₄)₂F₃ Performances for Na‐Ion Batteries

Mukherjee

Sharabani

Sharma

et al. 2020

Batteries & Supercaps

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Na‐ion batteries (SIB) are considered promising systems for energy storage devices, however diversity of available cathode materials is lower compared to lithium ion batteries. Recently, Na3V2(PO4)2F3 (NVPF) has been demonstrated as promising cathode material for SIB owing to high specific capacity and electrochemical reversibility. However, most of reports demonstrates capacities lower than theoretical value and optimization of electrochemical performances by controlled morphology and crystal structure was not demonstrated yet. Here, we demonstrate a scalable synthesis strategy to tailor the crystal structure and morphology of NVPF and showed that our approach enables to optimize the Na+ ion accommodation, diffusion and stability. A flower morphology (NVPF‐F) crystalizes in tetragonal structure, demonstrates discharge capacity of 109.5 mA.h.g−1 and 98.1 % columbic efficiency whereas a hollow spherical morphology (NVPF‐S) with orthorhombic structure exhibits discharge capacity of 124.8 mA.h.g−1 (very close to theoretical value) and 99.5 % columbic efficiency. The observed discharge capacity for NVPF‐S is highest reported value which is ascribed due to stable crystal structure and monodispersed morphology. Long term stability with negligible capacity loss is demonstrated over 550 cycles. Our findings shed light on importance of crystal structure and morphology of NVPF on electrochemical response, and realization as cathode material for SIB.

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“…[152] The introduction of lithium is believed to be also beneficial for the electrochemical performance of the Ni/Mn-based O3-type material as it effectively eases the reversible O3-P3 phase transformations. [153,154] Unfortunately, Li + might migrate from TM layers to Na layers, and a loss of Li + is observed during the Na + extraction/insertion process.…”

Section: Wwwadvenergymatdementioning

confidence: 99%

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

Wang

You

Yin

et al. 2017

Advanced Energy Materials

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sources into large-scale grids, inexpensive, efficient, and fast-responding electrical energy storage (EES) systems are essential to store the off-peak energy and releasing the stored energy during the onpeak period. Among various EES systems, rechargeable batteries represent one of the most competitive technologies because of their high conversion efficiency and environmental friendliness. [1][2][3][4] For stationary EES systems, batteries with low cost, high safety, high rate capability, and long cycle stability are highly desired.Lithium (Li)-ion batteries (LIBs) have achieved great success in the market of portable electronics and electric vehicles since their commercialization by Sony Company in 1991. However, the shortage of Li resources in nature gives rise to a concern about its sustainable development in grid scale. Compared with Li, sodium resource has rich natural abundance in the earth crust and a worldwide distribution, consequently leading to a low price of sodium-based raw materials (e.g., the cost of Na 2 CO 3 is about 25-30 times lower than that of Li 2 CO 3 ). Besides, sodium has a suitable redox potential (E 0 (Na + /Na) = −2.71 V versus standard hydrogen electrode (SHE), 0.3 V above that of Li + /Li) and similar physical and chemical properties with lithium. [5,6] Therefore, rechargeable sodium-ion batteries (SIBs), which have a similar "rockingchair" working principle of LIBs, are emerging as an appealing choice as alternatives for LIBs. Note that it is difficult for SIBs to bypass LIBs in terms of energy densities because of the much higher weight of Na and lower standard electrochemical potential. [7][8][9][10] Nevertheless, the use of low-cost materials, including inexpensive Na-based raw materials and Al current collectors for both cathodes and anodes in SIBs, could significantly reduce the cost. In this case, SIBs could be applied where cost-effectiveness rather than energy density is the most critical issue, e.g., in the field of large-scale EES. As a result, sodiumbased electroactive materials are enjoying renewed interest especially for very low cost systems for grid storage. [11,12] Given that cathode materials are the key component that determines energy density and cost, tremendous efforts have been devoted to exploring suitable positive electrode materials with high reversible capacity, rapid Na ions insertion/extraction, and good cycling stability in the past few years. [13,14] A broad range of compounds, including layered oxides, polyanionic frameworks, hexacyanoferrates, and organics, haveThe increasing demand for replacing conventional fossil fuels with clean energy or economical and sustainable energy storage drives better battery research today. Sodium-ion batteries (SIBs) are considered as a promising alternative for grid-scale storage applications due to their similar "rockingchair" sodium storage mechanism to lithium-ion batteries, the natural abundance, and the low cost of Na resources. Searching for appropriate electrode materials with acceptable electrochemical perfor...

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Exploring the working mechanism of Li⁺ in O3-type NaLi_0.1Ni_0.35Mn_0.55O₂ cathode materials for rechargeable Na-ion batteries

Abstract: Li-substitution can improve the structural stability by forming an intermediate O′3 phase that can ease the destructive O3–P3 direct phase transition.

Cited by 104 publications

References 52 publications

Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

Effect of Crystal Structure and Morphology on Na₃V₂(PO₄)₂F₃ Performances for Na‐Ion Batteries

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

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Exploring the working mechanism of Li+ in O3-type NaLi0.1Ni0.35Mn0.55O2 cathode materials for rechargeable Na-ion batteries

Abstract: Li-substitution can improve the structural stability by forming an intermediate O′3 phase that can ease the destructive O3–P3 direct phase transition.

Cited by 104 publications

References 52 publications

Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High‐Performance Capacitive Sodium‐Ion Oxide Cathode

Effect of Crystal Structure and Morphology on Na3V2(PO4)2F3 Performances for Na‐Ion Batteries

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

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Exploring the working mechanism of Li⁺ in O3-type NaLi_0.1Ni_0.35Mn_0.55O₂ cathode materials for rechargeable Na-ion batteries

Effect of Crystal Structure and Morphology on Na₃V₂(PO₄)₂F₃ Performances for Na‐Ion Batteries