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Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries.
ACS Appl Mater Interfaces 2019; 11(4):3897-3908AA

Abstract

The emerging ubiquitous flexible/wearable electronics are in high demand for compatible flexible/high-energy rechargeable batteries, which set a collaborative goal to promote the electrochemical performance and the mechanical strength of the fundamental flexible electrodes involved. Herein, freestanding flexible electrode of Si/graphene films is proposed, which is fabricated through a scalable, zinc-driven redox layer-by-layer assembly process. In the hybrid films, silicon nanoparticles are intimately encapsulated and confined in multilayered reduced graphene oxide (rGO) nanosheet films. The designed monolithic rGO/Si film possesses several structural benefits such as high mechanical integrity and three-dimensional conductive framework for accessible charge transport and Li+ diffusion upon cycling. When adopted as binder-free electrode in half-cells, the optimized hybrid rGO/Si film delivers high gravimetric capacity (981 mA h g-1 at 200 mA g-1 with respect to the total weight of the electrode) and exceptional cycling stability (0.057% decay per cycle over 1000 cycles at 1000 mA g-1). Besides, the binder-free rGO/Si film anode is further combined with a commercial LiCoO2 foil cathode for completely flexible full cell/battery, which exhibits excellent cycling performance and a high capacity retention of over 95% after 30 cycles under continuous bending. This solution-processable, elaborately engineered, and robust Si/graphene films will further harness the potential of silicon-carbon composites for advanced flexible/wearable energy storage.

Authors+Show Affiliations

College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , P. R. China.College of Materials and Energy , South China Agricultural University , Guangzhou , Guangdong 510642 , P. R. China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30628439

Citation

Cai, Xin, et al. "Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries." ACS Applied Materials & Interfaces, vol. 11, no. 4, 2019, pp. 3897-3908.
Cai X, Liu W, Zhao Z, et al. Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries. ACS Appl Mater Interfaces. 2019;11(4):3897-3908.
Cai, X., Liu, W., Zhao, Z., Li, S., Yang, S., Zhang, S., ... Fang, Y. (2019). Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries. ACS Applied Materials & Interfaces, 11(4), pp. 3897-3908. doi:10.1021/acsami.8b18134.
Cai X, et al. Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries. ACS Appl Mater Interfaces. 2019 Jan 30;11(4):3897-3908. PubMed PMID: 30628439.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous Encapsulation of Nano-Si in Redox Assembled rGO Film as Binder-Free Anode for Flexible/Bendable Lithium-Ion Batteries. AU - Cai,Xin, AU - Liu,Wen, AU - Zhao,Zhongqiang, AU - Li,Simeng, AU - Yang,Siyuan, AU - Zhang,Shengsen, AU - Gao,Qiongzhi, AU - Yu,Xiaoyuan, AU - Wang,Hongqiang, AU - Fang,Yueping, Y1 - 2019/01/18/ PY - 2019/1/11/pubmed PY - 2019/1/11/medline PY - 2019/1/11/entrez KW - binder-free film anode KW - flexible full cells KW - flexible/wearable energy storage KW - lithium-ion batteries KW - silicon SP - 3897 EP - 3908 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 4 N2 - The emerging ubiquitous flexible/wearable electronics are in high demand for compatible flexible/high-energy rechargeable batteries, which set a collaborative goal to promote the electrochemical performance and the mechanical strength of the fundamental flexible electrodes involved. Herein, freestanding flexible electrode of Si/graphene films is proposed, which is fabricated through a scalable, zinc-driven redox layer-by-layer assembly process. In the hybrid films, silicon nanoparticles are intimately encapsulated and confined in multilayered reduced graphene oxide (rGO) nanosheet films. The designed monolithic rGO/Si film possesses several structural benefits such as high mechanical integrity and three-dimensional conductive framework for accessible charge transport and Li+ diffusion upon cycling. When adopted as binder-free electrode in half-cells, the optimized hybrid rGO/Si film delivers high gravimetric capacity (981 mA h g-1 at 200 mA g-1 with respect to the total weight of the electrode) and exceptional cycling stability (0.057% decay per cycle over 1000 cycles at 1000 mA g-1). Besides, the binder-free rGO/Si film anode is further combined with a commercial LiCoO2 foil cathode for completely flexible full cell/battery, which exhibits excellent cycling performance and a high capacity retention of over 95% after 30 cycles under continuous bending. This solution-processable, elaborately engineered, and robust Si/graphene films will further harness the potential of silicon-carbon composites for advanced flexible/wearable energy storage. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30628439/Simultaneous_Encapsulation_of_Nano_Si_in_Redox_Assembled_rGO_Film_as_Binder_Free_Anode_for_Flexible/Bendable_Lithium_Ion_Batteries_ L2 - https://dx.doi.org/10.1021/acsami.8b18134 DB - PRIME DP - Unbound Medicine ER -