Sandwich-structured graphene hollow spheres limited Mn2SnO4/SnO2 heterostructures as anode materials for high-performance lithium-ion batteries

Zhuang, Hua; Han, Mingrui; Ma, Wencheng; Ou, Yanghao; Jiang, Yong; Li, Wenrong; Liu, Xiaoyu; Zhao, Bing; Zhang, Jiujun

doi:10.1016/j.jcis.2020.10.062

Cited by 24 publications

(13 citation statements)

References 41 publications

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“…This heterojunction structure also improved the lithium-ion diffusion rates, which were obtained from the slopes of the real part of the impedance spectra (Z re ) in the low-frequency area vs ω À1/2 (Figure 5D). 4,33 The ex-situ EIS data after the 10th and 50th cycles (Figure S5) corroborate the capacity decay process of the CoClHy-C sample, and emphasize the stability of the CoOHCl@C and CoOHCl samples. During repeated cycling, the R ct value of CoClHy-C after 10th, 50th, and 100th cycles gradually increased because drastic volume changes engendered cracks, and SEI layers grew on the cracks.…”

Section: Resultssupporting

confidence: 63%

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Kim

Park

2022

Intl J of Energy Research

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Heterojunction structures from transition metal compound (TMC) with multiple anions are considered promising to improve the electrochemical performance of anode materials for lithium-ion batteries. In this study, yolk-shell structures consisting of cobalt hydroxy chloride yolk and carbon shell (CoOHCl@C) were synthesized through simple infiltration and in-situ hydroxylation. The capillary force caused the dissolved cobalt chloride to permeate into the hollow carbon, and then, during the hydroxylation process, water molecules facilitated Ostwald ripening to centralize cobalt hydroxy chloride. This novel synthesis process is eco-friendly and economical because this method generates no by-product and effluent. Especially, the hydroxylation step could be easily applied in classic heating furnace. The synthesized cobalt hydroxy chloride formed a heterojunction structure of cobalt hydroxide and cobalt chloride crystals after the first discharge and charge step, and the nanocrystals induced a built-in electric field at the heterointerfaces to decrease charge transfer resistance and improve the rate performance. In addition, the applied carbon shell synergized with the heterojunction structure to improve the stability during repeated cycling. The CoO-HCl@C anode exhibited stable cycle performance over 100 cycles at 2.0 A g À1 , wherein a discharge capacity of 665 mA h g À1 was delivered at the 100th cycle, and its capacity retention was 91.5%.

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Section: Resultssupporting

confidence: 63%

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Kim

Park

2022

Intl J of Energy Research

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“…Meanwhile, the shoulder peaks at 493.2 and 484.8 eV correspond to Sn 3d 3/2 and Sn 3d 5/2 of metallic Sn 0 , which agree well with the reported results of Sn and Sn 4+ . 2,33 These results further confirm the reduction of partial Sn 4+ to Sn 0 by high-temperature carbothermal reduction. As for Mn 2p (Figure 3e), two peaks at 653.3 and 641.5 eV are associated with the spin orbits of bivalent Mn 2+ .…”

Section: Resultsmentioning

confidence: 96%

Binary-Metal Mn₂SnO₄ Nanoparticles and Sn Confined in a Cubic Frame with N-Doped Carbon for Enhanced Lithium and Sodium Storage

Wan

Liu

Cheng

et al. 2021

ACS Appl. Mater. Interfaces

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Sn-based materials have been popularly researched as anodes for energy storage due to their high theoretical capacity. However, the sluggish reaction kinetics and unsatisfied cycling stability caused by poor conductivity and dramatic volume expansion are still pivotal barriers for the development of Sn-based materials as anodes. In this work, the binary-metal Mn2SnO4 nanoparticles and Sn encapsulated in N-doped carbon (Sn@Mn2SnO4-NC) were fabricated by multistep reactions and employed as the anode for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). The coexistence of binary metals (Sn and Mn) can improve intrinsic conductivity. Simultaneously, hollow architecture along with carbon relieves internal stress and prevents structural collapse. A Sn@Mn2SnO4-NC anode delivers an appealing capacity of 1039.5 mAh g–1 for 100 cycles at 100 mA g–1 and 823.8 mAh g–1 for 600 cycles at 1000 mA g–1 in LIBs. When evaluated as an anode in SIBs, the Sn@Mn2SnO4-NC anode tolerates up to 7000 cycles at 2000 mA g–1 and maintains a capacity of 185.8 mAh g–1. Quantified kinetic investigations demonstrate the high contribution of pseudocapacitive effects during the cycle process. Furthermore, density functional theory (DFT) calculations further verify that introduction of the second metal (Mn) improves the conductivity of the material, which is favorable for charge transport. This work is expected to provide a feasible preparation strategy for binary-metal materials to enhance the performance of lithium- and sodium-ion batteries.

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“…The category and ratio of metals determine the capacity and morphology of the compound. The structure and morphology of the compounds (hollow, 62 porous, 63 and core-shell 64 ) affect the stability of the material. The adjustment of the voltage range can control the chemical reactions of the compounds.…”

Section: Design Strategiesmentioning

confidence: 99%

Bimetallic-based composites for potassium-ion storage: challenges and perspectives

Dong

et al. 2023

Inorg. Chem. Front.

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Sandwich-structured graphene hollow spheres limited Mn2SnO4/SnO2 heterostructures as anode materials for high-performance lithium-ion batteries

Cited by 24 publications

References 41 publications

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Binary-Metal Mn₂SnO₄ Nanoparticles and Sn Confined in a Cubic Frame with N-Doped Carbon for Enhanced Lithium and Sodium Storage

Bimetallic-based composites for potassium-ion storage: challenges and perspectives

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Sandwich-structured graphene hollow spheres limited Mn2SnO4/SnO2 heterostructures as anode materials for high-performance lithium-ion batteries

Cited by 24 publications

References 41 publications

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Binary-Metal Mn2SnO4 Nanoparticles and Sn Confined in a Cubic Frame with N-Doped Carbon for Enhanced Lithium and Sodium Storage

Bimetallic-based composites for potassium-ion storage: challenges and perspectives

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Binary-Metal Mn₂SnO₄ Nanoparticles and Sn Confined in a Cubic Frame with N-Doped Carbon for Enhanced Lithium and Sodium Storage