Sandwich-structured dual carbon modified bismuth nanosphere composites as long-cycle and high-rate anode materials for sodium-ion batteries

Hu, Chenjing; Zhu, Yansong; Ma, Guangyao; Tian, Fang; Zhou, Yanli; Yang, Jian; Qian, Yitai

doi:10.1016/j.electacta.2020.137379

Cited by 34 publications

(20 citation statements)

References 42 publications

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“…Compared with the second discharge capacity (320 mAh g –1 ), the capacity retention was 88.4%. From Figure g, the cycle performance of the honeycomb-like nano-Bi/N-doped C composite was very excellent when compared with previously reported Bi anode materials. ,,− …”

Section: Results and Discussionmentioning

confidence: 56%

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Zhong

Chen

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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A new honeycomb-like nano-Bi/N-doped C composite is synthesized through simple physical blending followed by pyrolysis, using polyvinylpyrrolidone and bismuth nitrate pentahydrate as starting materials. In the synthesized composite, the particle sizes of Bi nanospheres are concentrated in 4–16 nm, and most of them are embedded in N-doped C. When used as an anode for sodium-ion batteries, it displays a stable reversible capacity of around 285 mAh g–1 at 5 A g–1. After the electrode was cycled for 20 000 times, the capacity remained at 283 mAh g–1, with 88.4% capacity retention relative to the second discharge capacity (320 mAh g–1). The honeycomb-like nano-Bi/N-doped C anode presents an interface and charge transfer resistance of less than 2 Ω and fast Na+ diffusion coefficients of around 10–6 cm2 s–1. Full cells composed of the honeycomb-like nano-Bi/N-doped C anode and the sodium vanadium phosphate/reduced graphene oxide cathode exhibit high energy density and excellent cycle performance. This work demonstrates the feasibility of synthesizing high-performance Bi/C composites through facile and scalable methods using inexpensive starting materials.

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Section: Results and Discussionmentioning

confidence: 56%

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Zhong

Chen

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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“…In order to demonstrate that the underlying mechanism is also adopted by other anode materials, TiO 2 /C, Bi/C and MoS 2 were also synthesized, according to previous work. 27–29 Hard carbon was provided by Shandong Yuhuang New Energy Co., Ltd.…”

Section: Methodsmentioning

confidence: 99%

Unravelling binder chemistry in sodium/potassium ion batteries for superior electrochemical performances

Wang

et al. 2022

J. Mater. Chem. A

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“…11,27,28 The combination of carbon skeletons within different dimensions can not only elastically prevent the inflation and ensure the structural integrity but also immensely improve the conductivity and endow high-rate properties, which is an effective and general approach to improve the performance of conversion and alloying materials. 29,30 Therefore, we believe that, if highly active heterojunctions are integrated with appropriately designed dual-carbon skeletons, a high-performance anode material and a novel composite structure for SIBs will be obtained.…”

Section: Introductionmentioning

confidence: 99%

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Sui

Zan

Wen

et al. 2022

ACS Appl. Mater. Interfaces

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Transition metal sulfides and oxides with high theoretical capacities have been regarded as promising anode candidates for a sodium-ion battery (SIB); however, they have critical issues including sluggish electrochemical kinetics and poor long-term stability. Herein, a dual carbon design strategy is proposed to integrate with highly active heterojunctions to overcome the above issues. In this new design, CoS2/CoO hollow dodecahedron heterojunctions are sandwiched between open framework carbon-spheres (OFCs) and a reduced graphene oxide (rGO) nanomembrane (OFC@CoS2/CoO@rGO). The CoS2/CoO heterojunctions effectively promote electron transfer on their surface and provide more electrochemical active sites through their hierarchical hollow structures assembled by nanodots. Meanwhile, the dual-carbon framework forms a highly conductive network that enables a better rate capability. More importantly, the dual carbon can greatly buffer volume expansion and stable reaction interfaces of electrode material during the charge/discharge process. Benefitting from their synergistical effects, the OFC@CoS2/CoO@rGO electrode achieves a high reversible capacity of 460 mAh g–1 at 0.05 A g–1 and still maintains 205.3 mAh g–1 even when current density is increased by 200 times when used as an anode material for SIBs. Their cycling property is also remarkable with a maintained capacity of 161 mAh g–1 after 3500 charging/discharging cycles at a high current density of 1 A g–1. The dual-carbon strategy is demonstrated to be effective for enhanced reaction kinetics and long-term cycling property, providing siginificant guidance for preparing other high-performance electrode materials.

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Sandwich-structured dual carbon modified bismuth nanosphere composites as long-cycle and high-rate anode materials for sodium-ion batteries

Cited by 34 publications

References 42 publications

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Unravelling binder chemistry in sodium/potassium ion batteries for superior electrochemical performances

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

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Sandwich-structured dual carbon modified bismuth nanosphere composites as long-cycle and high-rate anode materials for sodium-ion batteries

Cited by 34 publications

References 42 publications

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Facile Synthesis of a Honeycomb-Like Nano-Bi/N-Doped C Composite as an Anode for Sodium-Ion Batteries with Superb Cycle Stability

Unravelling binder chemistry in sodium/potassium ion batteries for superior electrochemical performances

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS2/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

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Product

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Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating