Reduced expansion and improved full-cell cycling of a SnO<sub>x</sub>#C embedded structure for lithium-ion batteries

Yang, Lie; Sun, Liuyang; Zhang, Rongrong; Xu, Yawen; Ning, Xiaojun; Qin, Yuanbin; Narayan, Ranjani; Li, Ju; Shan, Zhiwei

doi:10.1039/c8ta04822c

Cited by 10 publications

(4 citation statements)

References 41 publications

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“…41-1445). 8,21,30 Moreover, the diffraction peaks observed at 40.0°, 46.5°, 68.0°, 82.0°, and 86.5°correspond to the (111), ( 200), ( 220), (311), and (222) crystalline planes of the face-centered cubic (fcc) structure for all the obtained catalysts (Figure 4C), consistent with the standard metallic Pd diffraction pattern (JCPDS No. 46-1043).…”

Section: ■ Results and Discussionsupporting

confidence: 79%

“…Meanwhile, the presence of SnO 2 crystals for CNTs@SnO 2 , CNTs-NH 2 @SnO 2 , Pd/CNTs@SnO 2 , and Pd/CNTs-NH 2 @SnO 2 results in the diffraction peaks at 26.3°, 33.8°, 37.8°, 51.4°, 61.2°, and 65.5° as displayed in Figure B,C, assigned to the (110), (101), (200), (211), (310), and (301) crystalline planes of rutile SnO 2 (JCPDS No. 41-1445). ,, Moreover, the diffraction peaks observed at 40.0°, 46.5°, 68.0°, 82.0°, and 86.5° correspond to the (111), (200), (220), (311), and (222) crystalline planes of the face-centered cubic ( fcc ) structure for all the obtained catalysts (Figure C), consistent with the standard metallic Pd diffraction pattern (JCPDS No. 46-1043) .…”

Section: Resultssupporting

confidence: 77%

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Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Yang

Shen

et al. 2019

ACS Sustainable Chem. Eng.

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Aiming to unravel the cooperative synergy of palladium, tin oxide, and aniline-functionalized carbon nanotubes for the ethanol oxidation reaction (EOR), we constructed a new ternary palladium/tin oxide/aniline-functionalized carbon nanotubes electrocatalyst (denoted as Pd/CNTs-NH2@SnO2) by a layer-by-layer synthetic strategy. The aniline groups were first grafted on the surface of CNTs by a diazo-reaction under mild reaction conditions. Subsequently, the SnO2 and Pd nanoparticles were orderly anchored on the prepared support by a facile and surfactant-free approach. Exhilaratingly, the Pd/CNTs-NH2@SnO2 presents impressive electrochemical performance toward EOR in an alkaline medium, including excellent electrocatalytic activity and high durability. The promoted intrinsic electrochemical performance of the Pd/CNTs-NH2@SnO2 is possibly attributed to the efficient ternary synergism of the Pd, SnO2, and aniline-functionalized carbon nanotubes via the heterointerfaces. The tin oxide and aniline groups can facilitate the good dispersion of small sized nanoparticles and efficaciously prevent the detachment of Pd. Moreover, abundant OH species generated by neighboring SnO2 speed up the oxidative removal of CO-like intermediates at Pd sites, thereby enhancing the antipoisoning capability. Accordingly, the Pd/CNTs-NH2@SnO2 is an attractive alternative as an electrocatalyst of EOR, and the layer-by-layer synthetic strategy is a promising strategy to produce similar electrocatalysts with high performance.

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Section: ■ Results and Discussionsupporting

confidence: 79%

Section: Resultssupporting

confidence: 77%

Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Yang

Shen

et al. 2019

ACS Sustainable Chem. Eng.

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“…1−3 However, alternative anode materials with higher theoretical capacities are highly desired to improve the performance of LIBs. 4,5 As a nontoxic and abundant metal element with high electrical conductivity, the tin (Sn) anode has attracted much attention because of its theoretical capacity of 992 mAh g –1 (Li 22 Sn 5 ). The appropriate working potential (0.3–0.6 V) of Sn makes the advantages more prominent than graphite (<0.1 V) by improving the safety.…”

Section: Introductionmentioning

confidence: 99%

“…During the past few decades, lithium-ion batteries (LIBs) was considered as one of the most remarkable energy storage devices for electric devices, vehicles, and regional power grids, owing to their advantages of high energy density, long cycling life, cost effectiveness, and environmental benignity. − However, alternative anode materials with higher theoretical capacities are highly desired to improve the performance of LIBs. , As a nontoxic and abundant metal element with high electrical conductivity, the tin (Sn) anode has attracted much attention because of its theoretical capacity of 992 mAh g –1 (Li 22 Sn 5 ). The appropriate working potential (0.3–0.6 V) of Sn makes the advantages more prominent than graphite (<0.1 V) by improving the safety.…”

Section: Introductionmentioning

confidence: 99%

Traditional Electrodeposition Preparation of Nonstoichiometric Tin-Based Anodes with Superior Lithium-Ion Storage

2019

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Herein, nonstoichiometric structured tin-based anodes for lithium-ion batteries were directly prepared by a simple and traditional electrodeposition method. These tin-based anodes show high electrode capacity, excellent rate performance, and superior stable cycling stability, which delivers an outstanding reversible capacity of 728 mAh g –1 at the current density of 100 mA g –1 after 400 cycles. When cycled at the current density of 6 A g –1 for 250 cycles, the capacity of the tin-based anode was kept at about 300 mAh g –1 . The tin-based anode with its nonstoichiometric structure can effectively overcome the volume expansion, stabilize the electrode structure, and enhance the cyclic stability through structural reconstruction. By improving the traditional preparation method, the excellent electrochemical anode can be obtained, which may greatly promote the commercial application of alloy mechanism anode materials in lithium-ion batteries.

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Sn‐Alloy Foil Electrode with Mechanical Prelithiation: Full‐Cell Performance up to 200 Cycles

Chen

et al. 2019

Advanced Energy Materials

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Self‐supporting Sn foil is a promising high‐volumetric‐capacity anode for lithium ion batteries (LIBs), but it suffers from low initial Coulombic efficiency (ICE). Here, mechanical prelithiation is adopted to improve ICE, and it is found that Sn foils with coarser grains are prone to cause electrode damage. To mitigate damage and prepare thinner lithiated electrodes, 3Ag0.5Cu96.5Sn foil is used that has more refined grains (5–10 µm) instead of Sn (50–100 µm), where the abundant grain boundaries (GBs) offer more sliding systems to release stress and reduce deep fractures. Thus, the thickness of Lix3Ag0.5Cu96.5Sn can be reduced to 50 µm, compared to 100 µm LixSn. When the foils contact open air, the Sn‐Li‐O(H) products are more stable than Li‐O(H), thus Lix3Ag0.5Cu96.5Sn shows outstanding air stability. The as‐prepared 50 µm foil anode achieves stable 200 cycles in LiFePO4//Lix3Ag0.5Cu96.5Sn full cell (≈2.65 mAh cm−2) and the capacity retention is 95%. Even at 5C, the capacity of Lix3Ag0.5Cu96.5Sn is still up to ≈1.8 mAh cm−2. The cycle life of NCM523//Lix3Ag0.5Cu96.5Sn full cell exceeds that of NCM523//Li. Furthermore, 70 µm Lix3Ag0.5Cu96.5Sn is used as double‐sided anode for a 3 cm × 2.8 cm pouch cell and its actual volumetric capacity density is 674 mAh cm−3 after 50 cycles.

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Reduced expansion and improved full-cell cycling of a SnO_x#C embedded structure for lithium-ion batteries

Abstract: Embedded SnOx#C composite, with excellent structural robustness, exhibits stable full-cell performance and enhanced gravimetric/volumetric capacity.

Cited by 10 publications

References 41 publications

Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Traditional Electrodeposition Preparation of Nonstoichiometric Tin-Based Anodes with Superior Lithium-Ion Storage

Sn‐Alloy Foil Electrode with Mechanical Prelithiation: Full‐Cell Performance up to 200 Cycles

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Reduced expansion and improved full-cell cycling of a SnOx#C embedded structure for lithium-ion batteries

Abstract: Embedded SnOx#C composite, with excellent structural robustness, exhibits stable full-cell performance and enhanced gravimetric/volumetric capacity.

Cited by 10 publications

References 41 publications

Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Unraveling the Cooperative Synergy of Palladium/Tin Oxide/Aniline-Functionalized Carbon Nanotubes Enabled by Layer-by-Layer Synthetic Strategy for Ethanol Electrooxidation

Traditional Electrodeposition Preparation of Nonstoichiometric Tin-Based Anodes with Superior Lithium-Ion Storage

Sn‐Alloy Foil Electrode with Mechanical Prelithiation: Full‐Cell Performance up to 200 Cycles

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Product

Resources

About

Reduced expansion and improved full-cell cycling of a SnO_x#C embedded structure for lithium-ion batteries