SnO<sub>2</sub>nanoparticles embedded in 3D nanoporous/solid copper current collectors for high-performance reversible lithium storage

Hou, Chao; Shi, Xiang‐Mei; Zhao, Chenxu; Lang, Xing‐You; Zhao, Linlin; Wen, Zi; Zhu, Yongfu; Zhao, Ming; Li, Jian-Chen; Jiang, Q.

doi:10.1039/c4ta02604g

Cited by 27 publications

(26 citation statements)

References 59 publications

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“…3c) confirms the existence of Cu 2+ on the surface of SnO 2 -coated Cu foam, in accordance with the partial re-oxidation during the SnO 2 coating process (Fig. 3a) [11,[18][19][20]. In Sn 3d spectrum of the SnO 2 /Etched Cu foam (Fig.…”

Section: Resultssupporting

confidence: 78%

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

Kim

Cho

et al. 2020

J. Electrochem. Sci. Technol

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SnO 2-based high-capacity anode materials are attractive candidate for the next-generation high-performance lithium-ion batteries since the theoretical capacity of SnO 2 can be ideally extended from 781 to 1494 mAh g-1. Here 3D etched Cu foam is applied as a current collector for electron path and simultaneously a substrate for the SnO 2 coating, for developing an integrated electrode structure. We fabricate the 3D etched Cu foam through an auto-catalytic electroless plating method, and then coat the SnO 2 onto the self-supporting substrate through a simple sol-gel method. The catalytic dissolution of Cu metal makes secondary pores of both several micrometers and several tens of micrometers at the surface of Cu foam strut, besides main channel-like interconnected pores. Especially, the additional surface pores on etched Cu foam are intended for penetrating the individual strut of Cu foam, and thereby increasing the surface area for SnO 2 coating by using even the internal of Cu foam. The increased areal capacity with high structural integrity upon cycling is demonstrated in the SnO 2 coated 3D etched Cu foam. This study not only prepares the etched Cu foam using the spontaneous chemical reactions but also demonstrates the potential for electroless plating method about surface modification on various metal substrates.

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Section: Resultssupporting

confidence: 78%

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

Kim

Cho

et al. 2020

J. Electrochem. Sci. Technol

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“… 6 , 41 , 44 − 54 It still stabilized at ∼4.0 mAh/cm 2 after 20 cycles (see Figure 10 e), which is also a quite high areal capacity. It is found when using the loading of 10.1 mg/cm 2 , the capacity density based on electrodes can reach 881 mAh/cm 3 for maximum volumetric and 189 mAh/g for maximum gravimetric, which are much higher than those of previous metallic current collector electrodes such as np-Cu/SnO 2 , 6 np-Cu/MnO 2 , 41 NP Cu@Cu 2 O, 45 Cu/Si/Ge NW@Ni-CF, 46 ZnCo 2 O 4 @Ni-CF, 50 NiO@Ni-CF, 51 ZnCo 2 O 4 –ZnO–C@Ni-CF, 52 Co 3 O 4 @Co 3 S 4 @Ni-CF, 53 graphite anodes (1.3 g/cm 3 , and calculated with a theoretical capacity of 372 mAh/g) on the Cu foil (18 μm thick for half cells), as well as the volumetric energy density of Si–C electrodes on Cu foil (∼734 mAh/cm 3 , see the calculations, Figure 10 f and Table S2 in Supporting Information ). 54 It should be pointed out that, when using a copper foil with a thickness of ∼10 μm in commercial use, the theoretical gravimetric capacity density and volumetric capacity density of graphite anode will increase to 164 mAh/g and 414 mAh/cm 3 .…”

Section: Resultsmentioning

confidence: 91%

“…To the best of our knowledge, no work has reported on the synthesis of 3D metallic nanoporous structure by means of a direct hydrogen thermal reduction of metallic salts without any need of templates and complexes. 1 , 4 , 6 , 13 , 18 , 26 − 28 …”

Section: Resultsmentioning

confidence: 99%

“…In previous studies a big problem about the application of porous metal current collectors was the low areal and volumetric loading of active materials, which caused the low gravimetric and volumetric energy density calculation based on the overall weight of electrodes. 3 , 6 , 24 , 41 , 45 − 53 The use of copper substrates as supports for nanoporous metal current collector films significantly decreases the gravimetric and volumetric capacity density of overall electrodes. 6 , 41 To overcome these problems, we increased the areal loading of active metals and prepared mechanical stale current collectors without using copper substrates.…”

Section: Resultsmentioning

confidence: 99%

“… 3 , 6 , 24 , 41 , 45 − 53 The use of copper substrates as supports for nanoporous metal current collector films significantly decreases the gravimetric and volumetric capacity density of overall electrodes. 6 , 41 To overcome these problems, we increased the areal loading of active metals and prepared mechanical stale current collectors without using copper substrates. The initial areal capacity density of NiC 2 O 4 ·2H 2 O@np-Ni electrodes approached 8.8 mAh/cm 2 , which is also much higher than np-Cu/SnO 2 , np-Cu/MnO 2 , np-Cu@Cu 2 O, Cu/Si/Ge NW@Ni-CF, NiCo 2 O 4 @Ni-CF, Si–C composites, Si/C–graphite electrodes, and graphite anode.…”

Section: Resultsmentioning

confidence: 99%

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Template-Free Synthesis of Nanoporous Nickel and Alloys as Binder-Free Current Collectors of Li Ion Batteries

Andela

Hosson

et al. 2018

ACS Appl. Nano Mater.

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This paper reports a versatile template-free method based on the hydrogen reduction of metallic salts for the synthesis of nanoporous Ni and alloys. The approach involves thermal decomposition and reduction of metallic precursors followed with metal cluster nucleation and ligament growth. Topological disordered porous architectures of metals with a controllable distribution of pore size and ligament size ranging from tens of nanometers to micrometers are synthesized. The reduction processes are scrutinized through X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The formation mechanism of the nanoporous metal is qualitatively explained. The as-prepared nanoporous Ni was tested as binder-free current collectors for nickel oxalate anodes of lithium ion batteries. The nanoporous Ni electrodes deliver enhanced reversible capacities and cyclic performances compared with commercial Ni foam. It is confirmed that this synthesis method has versatility not only because it is suitable for different types of metallic salts precursors but also for various other metals and alloys.

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Self‐Standing 3D Hollow Nanoporous SnO₂‐Modified Cu_xO Nanotubes with Nanolamellar Metallic Cu Inwalls: A Facile In Situ Synthesis Protocol toward Enhanced Li Storage Properties

Yan

Liu

Kang

et al. 2023

Adv Funct Materials

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SnO2 is regarded as a prospective anode material candidate for high energy density lithium‐ion batteries (LIBs). However, rapid structural degradation and low conductivity always bring about poor cycling stability and electrochemical reversibility, becoming critical dilemmas toward its practical application. To address these issues, herein, a facile multi‐step in situ synthesis protocol is developed to tactfully achieve self‐standing 3D hollow nanoporous SnO2‐modified CuxO nanotubes with nanolamellar metallic Cu inwalls (3D‐HNP SnO2/CuxO@n‐Cu) via chemical dealloying, heat treatment, electrochemical replacement, and selective etching. The results show that the unique 3D‐HNP SnO2/CuxO@n‐Cu as a binder‐free integrated anode for LIBs exhibits superior Li storage properties with high initial reversible capacity of 3.34 mAh cm−2 and good cycling stability with 85.6% capacity retention and >99.4% coulombic efficiency after 200 cycles (capacity decay of only 0.002 mAh cm−2 per cycle). This is mainly attributed to the unique 3D hollow nanoporous configuration design composed of interlinked CuxO nanotubes modified by ultrafine SnO2 nanocrystals (4–10 nm) with two‐way mechanical strain cushion and nanolamellar metallic Cu inwalls with boosted electrical conductivity. This work can be expected to offer an original and effective approach for rational design and fabrication of advanced MOx‐based anodes toward high‐performance LIBs.

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SnO₂nanoparticles embedded in 3D nanoporous/solid copper current collectors for high-performance reversible lithium storage

Cited by 27 publications

References 59 publications

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

Template-Free Synthesis of Nanoporous Nickel and Alloys as Binder-Free Current Collectors of Li Ion Batteries

Self‐Standing 3D Hollow Nanoporous SnO₂‐Modified Cu_xO Nanotubes with Nanolamellar Metallic Cu Inwalls: A Facile In Situ Synthesis Protocol toward Enhanced Li Storage Properties

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SnO2nanoparticles embedded in 3D nanoporous/solid copper current collectors for high-performance reversible lithium storage

Cited by 27 publications

References 59 publications

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

SnO2-Coated 3D Etched Cu Foam for Lithium-ion Battery Anode

Template-Free Synthesis of Nanoporous Nickel and Alloys as Binder-Free Current Collectors of Li Ion Batteries

Self‐Standing 3D Hollow Nanoporous SnO2‐Modified CuxO Nanotubes with Nanolamellar Metallic Cu Inwalls: A Facile In Situ Synthesis Protocol toward Enhanced Li Storage Properties

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Product

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SnO₂nanoparticles embedded in 3D nanoporous/solid copper current collectors for high-performance reversible lithium storage

Self‐Standing 3D Hollow Nanoporous SnO₂‐Modified Cu_xO Nanotubes with Nanolamellar Metallic Cu Inwalls: A Facile In Situ Synthesis Protocol toward Enhanced Li Storage Properties