Enhanced constraint and catalysed conversion of lithium polysulfides <i>via</i> composite oxides from spent layered cathodes

Yin, Wenze; Wu, Zhenguo; Tian, Wen; Chen, Yanxiao; Xiang, Wei; Feng, Guilin; Li, Yongchun; Wu, Chunjin; Xu, Chunliu; Bai, Changjiang; Zhong, Benhe; Wang, Xinlong; Zhang, Jun; He, Fan; Alshehri, Abdulmohsen Ali; Guo, Xiaodong

doi:10.1039/c9ta06116a

Cited by 32 publications

(32 citation statements)

References 52 publications

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“…[6,35] Further, it has been proved that the catalytic ability of NiO-based materials can to some extent accelerate the conversion kinetics of intermediate LiPSs. [24,36,37] Despite this, profound microstructure design is necessary to combine zinc oxide based and nickel oxide based nanomaterials to enhance the cycling stability for Li−S batteries.…”

Section: Introductionmentioning

confidence: 99%

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Liu

Zeng

et al. 2020

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Achieving strong adsorption and catalytic ability toward polar lithium polysulfide species (LiPSs) of the sulfur host in lithium–sulfur (Li–S) batteries is essential for their electrochemical cyclic stability. Herein, a strategy of “self‐termination of ion exchange” is put forward to synthesize the novel yolk‐shell sulfur host composed of ZnO nanoparticles confined in Co‐doped NiO (CDN) polyhedron (ZCCDN). After sulfur infiltration, the obtained S/ZCCDN cathode achieves excellent performance of 738.56 mAh g−1 after 500 cycles at 0.5 C with a very low capacity decay rate of only 0.048% per cycle. Even at 1 C, 501.05 mAh g−1 could be retained after 500 cycles, suggesting a capacity decay ratio of only 0.076% per cycle. The good cycle performance is attributed to the improved LiPSs’ conversion kinetics, which originates from ZCCDN's sturdy chemical affinity and strong catalytic ability to polar LiPSs. For the first time, by electron holography, the local interfacial polarization electric field is clarified to be existed in the material which is conducive to the capture of LiPSs and the migration of electrons and Li+ from the mesopores. This work provides a rational way for the use of zeolitic imidazolate frameworks (ZIFs) and development of cathode materials for Li–S batteries.

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Section: Introductionmentioning

confidence: 99%

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Liu

Zeng

et al. 2020

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“…The adsorption behavior of Li 2 S, AN, EC, and DMC at the surface of the NCM 523 cathode is first investigated by DFT. Different crystal planes such as (003) and (012) have been addressed in previous studies, where the (012) is regarded as dominant plane in some work. − However, the HRTEM result (Figure S1) indicates that (003) is the major exposed crystal plane in the NCM523 particle explored in this work, which may be due to the specific synthetic conditions applied by the manufacture company. Therefore, the adsorption energies of EC, DMC, AN, and Li 2 S onto the (003) crystal plane of the NCM 523 cathode are simulated here.…”

Section: Results and Discussionmentioning

confidence: 77%

“…All the energy was calculated with final optimized crystal models. The adsorption energy of the EC, DMC, AN, and Li 2 S is defined as E ads = E M/surf – E M – E surf , where E M/surf and E surf are the total energy of NCM523 with and without EC, DMC, AN, and Li 2 S, respectively, and E M is the energy of EC, DMC, AN, and Li 2 S in a vacuum.…”

Section: Methodsmentioning

confidence: 99%

Stable Electrode/Electrolyte Interface for High-Voltage NCM 523 Cathode Constructed by Synergistic Positive and Passive Approaches

Shi

Zheng

Xiong

et al. 2021

ACS Appl. Mater. Interfaces

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Increasing the working voltage of lithium-ion batteries (LIBs) is an efficient way to increase energy density. However, high voltage triggers excessive electrolyte decomposition at the electrode−electrolyte interfaces, where the electrochemical performance such as cyclic stability and rate capability is seriously deteriorated. A new synergistic positive and passive approach is proposed in this work to construct a stable electrode−electrolyte interface at high voltage. As a positive approach, inorganic lithium sulfide salt (Li 2 S) is used as an electrolyte additive to build a stable cathode electrolyte interface (CEI) at the LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523) cathode surface. In a passive way, acetonitrile (AN) is applied as a solvent additive to suppress oxidative decomposition of a carbonate electrolyte via preferential solvation with a lithium ion. Because of the synergistic interaction between the positive and passive approaches, the cyclic stabilities of NCM523/Li cells improved with a tiny amount of Li 2 S (0.01 mg mL −1 ) and AN (0.5 vol %). The capacity retention increased to 80.74% after 200 cycles compared to the cells with the blank electrolyte (67.98%) and AN-containing electrolyte (75.8%). What is more, the capacity retention of the NCM523/graphite full cell is increased from 65 to 81% with the addition of the same amount of Li 2 S and AN after 180 cycles. The mechanism is revealed on the basis of the theoretical calculations and various characterizations. The products derived from the preferential adsorption and oxidation of Li 2 S on the surface of NCM523 effectively increase the content of inorganic ingredients. However, the presence of AN prevents oxidation of the solvent. This study provides new principle guiding studies on a high-voltage lithium-ion battery with excellent electrochemical performance.

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“…The two main peaks are found in the spectrum of all samples at 642.5 eV (2p 3/2 ) and 653.4 eV (2p 1/2 ) according to the peak fitting of S-NCM622. As shown in Figure d, the two split peaks at 641.2 and 652.4 eV belong to Mn 3+ and those at 642.3 and 653.8 eV correspond to Mn 4+ . The contents of Mn 4+ and Mn 3+ are 65.3 and 34.7 at.…”

Section: Resultsmentioning

confidence: 91%

“…As shown in Figure 4d, the two split peaks at 641.2 and 652.4 eV belong to Mn 3+ and those at 642.3 and 653.8 eV correspond to Mn 4+ . 31 The contents of Mn 4+ and Mn 3+ are 65.3 and 34.7 at. %, respectively.…”

Section: Resultsmentioning

confidence: 95%

Restoring Surface Defect Crystal of Li-Lacking LiNi_0.6Co_0.2Mn_0.2O₂ Material Particles toward More Efficient Recycling of Lithium-Ion Batteries

Yang

Zhang

Xiao

et al. 2021

ACS Sustainable Chem. Eng.

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Lithium-ion batteries are the core components of new energy vehicles. Recycling of spent lithium-ion batteries resources is beneficial for the sustainable development of new energy vehicles. However, the current traditional recycling strategy has the disadvantages of high energy consumption and complex treatment process, which do not meet the requirements of green and energy saving. Here, we report a simpler and greener approach to regenerate spent cathode materials by preoxidation followed by a short annealing approach. The generated cathode material has a good crystal structure and lower Li/Ni mixing. Owing to the stable structure, the generated cathode material exhibits a capacity of 153.82 mA h g–1 at 1C over 2.8–4.3 V with retention reaching 94.74% after 100 cycles. β-NiOOH obtained by preoxidation is beneficial for transformation of the original layered structure in the subsequent short annealing process. The novel approach provides efficient and green ideas for efficient direct regeneration of spent cathode materials.

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Enhanced constraint and catalysed conversion of lithium polysulfides via composite oxides from spent layered cathodes

Abstract: Intergrown multi-phase composite oxides are critical for LiPS adsorption.

Cited by 32 publications

References 52 publications

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Stable Electrode/Electrolyte Interface for High-Voltage NCM 523 Cathode Constructed by Synergistic Positive and Passive Approaches

Restoring Surface Defect Crystal of Li-Lacking LiNi_0.6Co_0.2Mn_0.2O₂ Material Particles toward More Efficient Recycling of Lithium-Ion Batteries

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Enhanced constraint and catalysed conversion of lithium polysulfides via composite oxides from spent layered cathodes

Abstract: Intergrown multi-phase composite oxides are critical for LiPS adsorption.

Cited by 32 publications

References 52 publications

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Yolk−Shell Nano ZnO@Co‐Doped NiO with Efficient Polarization Adsorption and Catalysis Performance for Superior Lithium−Sulfur Batteries

Stable Electrode/Electrolyte Interface for High-Voltage NCM 523 Cathode Constructed by Synergistic Positive and Passive Approaches

Restoring Surface Defect Crystal of Li-Lacking LiNi0.6Co0.2Mn0.2O2 Material Particles toward More Efficient Recycling of Lithium-Ion Batteries

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Restoring Surface Defect Crystal of Li-Lacking LiNi_0.6Co_0.2Mn_0.2O₂ Material Particles toward More Efficient Recycling of Lithium-Ion Batteries