1
|
Hu W, Liu S, Wang Z, Feng X, Gao M, Song F. In Situ Reduced Graphene Oxide and Polyvinyl Alcohol Nanocomposites With Enhanced Multiple Properties. Front Chem 2022; 10:856556. [PMID: 35392418 PMCID: PMC8980314 DOI: 10.3389/fchem.2022.856556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
The nanocomposites formed by graphene oxide (GO) and carbazate-modified polyvinyl alcohol (PVA-N) were developed to investigate their multiple properties for wide applications. Their physicochemical characterizations confirmed that the in situ reduced GO (rGO) not only decreased the crystallization but also induced the porous structures inside the nanocomposites. Significantly, it revealed that the comprehensive performance of PVA-N2-2%GO consisted of PVA-N2 with the carbazate degree of substitution (DS) of 7% and the weight ratio (wt%) of 2% GO displayed 79% of tensile elongation and tensile strength of 5.96 N/mm2 (MPa) by tensile testing, glass transition temperature (Tg) of 60.8°C and decomposition temperature (Td) of 303.5°C by TGA and DSC, surface contact angle at 89.4 ± 2.1°, and electrical conductivity of 9.95 × 10−11 S/cm. The abovementioned comprehensive performance was enhanced with the increased amount of in situ rGO, contributed by the high DS of the carbazate group in PVA-N and high amount of GO. The rGO by in situ reduction was the main driving force for enhancing the multiple properties inside the nanocomposites.
Collapse
Affiliation(s)
- Wenwen Hu
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Collaborative Innovation Center of Regenerative Medicine and Medical Bioresource Development and Application, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Shuhan Liu
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Collaborative Innovation Center of Regenerative Medicine and Medical Bioresource Development and Application, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhonghai Wang
- Information and Management College, Guangxi Medical University, Nanning, China
| | - Xianjing Feng
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Pharmaceutical College, Guangxi Medical University, Nanning, China
| | - Ming Gao
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Collaborative Innovation Center of Regenerative Medicine and Medical Bioresource Development and Application, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- *Correspondence: Ming Gao, ; Fangming Song,
| | - Fangming Song
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Collaborative Innovation Center of Regenerative Medicine and Medical Bioresource Development and Application, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- *Correspondence: Ming Gao, ; Fangming Song,
| |
Collapse
|
2
|
Hou BH, Wang YY, Ning QL, Fan CY, Xi XT, Yang X, Wang J, Zhang JP, Wang X, Wu XL. An FeP@C nanoarray vertically grown on graphene nanosheets: an ultrastable Li-ion battery anode with pseudocapacitance-boosted electrochemical kinetics. NANOSCALE 2019; 11:1304-1312. [PMID: 30603754 DOI: 10.1039/c8nr08849g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In order to develop promising anode materials for lithium-ion batteries (LIBs), a unique nanocomposite abbreviated as G⊥FP@C-NA, in which a carbon-coated FeP nanorod array (FP@C-NA) is vertically grown on a conductive reduced graphene oxide (G) network, has been successfully prepared via a scalable strategy. Benefiting from the distinctive structure, G⊥FP@C-NA exhibits much improved conductivity, structural stability and pseudocapacitance-boosted ultrafast electrochemical kinetics for Li storage. As a result, the G⊥FP@C-NA delivers a high Li-storage capacity (1106 mA h g-1 at 50 mA g-1), outstanding rate capability (565 mA h g-1 at 5000 mA g-1) and long-term cycling stability (1009 mA h g-1 at 500 mA g-1 after 500 cycles and 310 mA h g-1 at 2000 mA g-1 after 2000 cycles) when used as an anode material for LIBs. As expected, this kind of nanoarray structure is attractive and can also be extended to other electrode materials for various energy storage systems.
Collapse
Affiliation(s)
- Bao-Hua Hou
- National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|