Three-dimensional-graphene flower skeleton composition used for advanced supercapacitors and batteries for light weighted electrical devices and vehicles, comprises coconut husk, dilute hydrochloric acid, sulfuric acid, polyvinyl alcohol, double distilled water, and potassium iodide
	ARYA T; BHATT D; MATIYANI M; BOHRA B S; PATHAK M; TEWARI C; TATRARI G; SAHOO N G
	2023-07-28
专利权人	UNIV KUMAUN (UYKU-Non-standard)
申请日期	2023-07-28
专利号	IN202311051097-A
成果简介	NOVELTY - Three-dimensional (3D)-graphene flower skeleton composition comprises 10 4000-6000 gm coconut husk (CH), 1-3 ml dilute hydrochloric acid, 1-3 ml sulfuric acid, 1-3 gm polyvinyl alcohol (PVA),15-25 ml double distilled water (DDW), and 15 0.5-2 gm potassium iodide (KI). USE - Three-dimensional (3D)-graphene flower skeleton composition used for advanced supercapacitors and batteries for the light weighted electrical devices and vehicles. ADVANTAGE - The three-dimensional-graphene flower skeleton composition can develop electrode materials for the fabrication of supercapacitors at a large potential window that may vary from -1 to +2 volt (V), fabricate a device ensuring high capacitance and more than 99% of retention rate, and deliver an expeditious and cost-effective supercapacitor device featuring an exceptionally high capacitance value of more than 500 gravimetric capacitance (F/g) at a good scan rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a manufacturing 3D-graphene flower skeletons from coconut husk fibers for advanced supercapacitors and batteries, which involves: (a) crushing 4000-6000 gm of coconut husk (CH) and mixing with 1-3 ml of dilute hydrochloric acid to treat acid-dipped CH with ultrasonic hominization for 1 hour for breaking CH into carbonic skeleton resulting in an easier growth of the graphene skeleton; (b) placing the ultrasonicated sample into a high-temperature exfoliation unit at 820℃ for the next 4 hours under the inert atmosphere for electrochemical exfoliation; (c) treating the carbonic skeleton with a microwave oven-based exfoliation sample for removing the remaining impurities from the material thereby processing the obtained material under a ball mill for 6-8 hours (h) and resulting in black charr; (d) collecting and washing the black charr multiple times thoroughly by 15-25 ml of DDW to remove the other impurities from the material to obtain graphene nanosheets (coconut husk-derived reduced graphene (CHG)); (e) developing polymer gel electrolytes by using 1-3 gm of polyvinyl alcohol (PVA), 1-3 ml sulfuric acid (H2SO4), and 0.5-2 gm of potassium iodide (KI); (f) preparing electrodes and placing the prepared electrodes in a sandwich manner separated by a separator which is a Whatman membrane such that the separator prevents the device from any short circuit, and stores the electrolytes in its pores and passage of ions during charging and discharging; and (g) soaking the separator in 1M H2SO4which is acting as the aqueous electrolyte for the complete process thereby preparing a first device (Cell 1), where further two more electrodes are placed in a sandwich manner separated by the PVA-KI/H2SO4polymer-gel electrolyte sheet, which works as both electrolyte and separator for preparing a second device (Cell 2).
IPC 分类号	H01G-011/34 ; H01G-011/56 ; H01M-010/0585 ; H01M-050/403 ; H01M-050/431
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/21079
专题	中国科学院新疆生态与地理研究所
作者单位	UNIV KUMAUN (UYKU-Non-standard)
推荐引用方式 GB/T 7714	ARYA T,BHATT D,MATIYANI M,et al. Three-dimensional-graphene flower skeleton composition used for advanced supercapacitors and batteries for light weighted electrical devices and vehicles, comprises coconut husk, dilute hydrochloric acid, sulfuric acid, polyvinyl alcohol, double distilled water, and potassium iodide. IN202311051097-A[P]. 2023.

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