Configuration‐dependent anionic redox in cathode materials

Yang, Lu; Chen, Rusong; Liu, Zepeng; Gao, Yurui; Wang, Xuefeng; Wang, Zhaoxiang; Chen, Liquan

doi:10.1002/bte2.20210015

Cited by 38 publications

(28 citation statements)

References 175 publications

(528 reference statements)

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“…In view of the critical role played by the surface chemistry of NLO particles, suitable surface treatment becomes indispensable to combat interfacial and structural degradation before their electrochemical applications . Accordingly, surface coating is a straightforward protocol that has been generally resorted to for NLO stabilization. , Despite the intense recent efforts on surface engineering of NLOs, a clear picture of the surface physicochemical properties and their corresponding functions remains very scarce due to the complicated nature of the surface, which is meanwhile vulnerable to environmental conditions. − On the one hand, the NLO powder has undesirable high sensitivity to both air and moisture . This setback makes the surface treatment of NLO materials a challenging process due to the facile irreversible structural damage, which is particularly troublesome as most water-based procedures become inappropriate .…”

Section: Introductionmentioning

confidence: 99%

Surface Lattice Modulation through Chemical Delithiation toward a Stable Nickel-Rich Layered Oxide Cathode

Zhang

Meng

et al. 2023

J. Am. Chem. Soc.

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Nickel-rich layered oxides (NLOs) are considered as one of the most promising cathode materials for next-generation high-energy lithium-ion batteries (LIBs), yet their practical applications are currently challenged by the unsatisfactory cyclability and reliability owing to their inherent interfacial and structural instability. Herein, we demonstrate an approach to reverse the unstable nature of NLOs through surface solid reaction, by which the reconstructed surface lattice turns stable and robust against both side reactions and chemophysical breakdown, resulting in improved cycling performance. Specifically, conformal La(OH) 3 nanoshells are built with their thicknesses controlled at nanometer accuracy, which act as a Li + capturer and induce controlled reaction with the NLO surface lattices, thereby transforming the particle crust into an epitaxial layer with localized Ni/Li disordering, where lithium deficiency and nickel stabilization are both achieved by transforming oxidative Ni 3+ into stable Ni 2+ . An optimized balance between surface stabilization and charge transfer is demonstrated by a representative NLO material, namely, LiNi 0.83 Co 0.07 Mn 0.1 O 2 , whose surface engineering leads to a highly improved capacity retention and excellent rate capability with a strong capability to inhibit the crack of NLO particles. Our study highlights the importance of surface chemistry in determining chemical and structural behaviors and paves a research avenue in controlling the surface lattice for the stabilization of NLOs toward reliable high-energy LIBs.

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Section: Introductionmentioning

confidence: 99%

Surface Lattice Modulation through Chemical Delithiation toward a Stable Nickel-Rich Layered Oxide Cathode

Zhang

Meng

et al. 2023

J. Am. Chem. Soc.

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“…Atoms with similar Z numbers have different coherent neutron scattering lengths, for example 2.49 and 10.3 femto meters for Co and Ni [79] . Therefore, ND is valuable in detecting the positions of light atoms in the lattice and recognizing the positions of elements with similar atomic numbers in multi‐metal oxide materials [80] …”

Section: Advanced Characterization Techniques For Detecting Tm Vacancymentioning

confidence: 99%

Transition Metal Vacancy in Layered Cathode Materials for Sodium‐Ion Batteries

Zhou

2023

Chemistry A European J

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Anionic redox has been considered as a promising strategy to break the capacity limitation of cathode materials that solely relies on the intrinsic cationic redox in secondary batteries. Vacancy, as a kind of defect, can be introduced into transition metal layer to trigger oxygen redox, thus enhancing the energy density of layer-structured cathode materials for sodium-ion batteries. Herein, the formation process, recent progress in working mechanisms of triggering oxygen redox, as well as advanced characterization techniques for transition metal (TM) vacancy were overviewed and discussed. Strategies applied to stabilize the vacancy contained structures and harness the reversible oxygen redox were summarized. Furthermore, the challenges and prospects for further understanding TM vacancy were particularly emphasized.

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“…(2) insulation, discharge products (ZnO) with poor reversibility; and (3) continuous consumption of electrolytes. The operation of ZIBs is based on the stripping and plating of Zn on the anode, Zn ion insertion, extraction, and conversion reactions at the cathode, and Zn ion transfer between the cathode and anode [17,18]. However, ZABs only involve stripping and plating of Zn on the anode in aqueous electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte

Ge¹,

Feng²,

Liu³

2023

Nano Research Energy

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Zn-based batteries have attracted extensive attention due to their high theoretical energy density, safety, abundant resources, environmental friendliness, and low cost. They are a new energy storage and conversion technology with significant development potential and have been widely used in renewable energy and portable electronic devices. Considerable attempts have been devoted to improving the performance of Zn-based batteries. Specifically, battery cycle life and energy efficiency can be improved by electrolyte modification and the construction of highly efficient rechargeable Zn anodes. This review compiles the progress of the research related to Zn anodes and electrolytes, especially in the last five years. This review will introduce fundamental concepts, summarize recent development, and inspire further systematic research for high-performance Zn-based batteries in the future.

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Configuration‐dependent anionic redox in cathode materials

Cited by 38 publications

References 175 publications

Surface Lattice Modulation through Chemical Delithiation toward a Stable Nickel-Rich Layered Oxide Cathode

Surface Lattice Modulation through Chemical Delithiation toward a Stable Nickel-Rich Layered Oxide Cathode

Transition Metal Vacancy in Layered Cathode Materials for Sodium‐Ion Batteries

Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte

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