scholarly journals Graphitic Porous Carbon Derived from Waste Coffee Sludge for Energy Storage

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3972
Author(s):  
Hyeyoung Jung ◽  
Jihyeon Kang ◽  
Inho Nam ◽  
Sunyoung Bae
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Lower Cost ◽  
Carbon Materials ◽  
Storage Capacity ◽  
Hydrothermal Carbonization ◽  
Waste Sludge ◽  
Electronic Conductivities ◽  
Porous Carbon Electrodes ◽  
Waste Handling

Coffee is one of the largest agricultural products; however, the majority of the produced coffee is discarded as waste sludge by beverage manufacturers. Herein, we report the use of graphitic porous carbon materials that have been derived from waste coffee sludge for developing an energy storage electrode based on a hydrothermal recycling procedure. Waste coffee sludge is used as a carbonaceous precursor for energy storage due to its greater abundance, lower cost, and easier availability as compared to other carbon resources. The intrinsic fibrous structure of coffee sludge is based on cellulose and demonstrates enhanced ionic and electronic conductivities. The material is primarily composed of cellulose-based materials along with several heteroatoms; therefore, the waste sludge can be easily converted to functionalized carbon. The production of unique graphitic porous carbon by hydrothermal carbonization of coffee sludge is particularly attractive since it addresses waste handling issues, offers a cheaper recycling method, and reduces the requirement for landfills. Our investigations revealed that the graphitic porous carbon electrodes derived from coffee sludge provide a specific capacitance of 140 F g−1, with 97% retention of the charge storage capacity after 1500 cycles at current density of 0.3 A g−1.

All-carbon lithium capacitor based on salt crystal-templated, N-doped porous carbon electrodes with superior energy storage

2018 ◽  
Vol 6 (37) ◽  
pp. 18276-18285 ◽  
Author(s):  
Yongpeng Cui ◽  
Wei Liu ◽  
Yan Lyu ◽  
Yuan Zhang ◽  
Huanlei Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Porous Carbon ◽  
Lower Cost ◽  
Carbon Electrodes ◽  
Salt Crystal ◽  
Porous Carbon Electrodes ◽  
Carbon Network

All-carbon LIC with higher energy density and lower cost are constructed based on NaHCO3 crystal designed N-doped carbon network.

Sorghum biomass-derived porous carbon electrodes for capacitive deionization and energy storage

2021 ◽  
Vol 312 ◽  
pp. 110757
Author(s):  
Minjun Kim ◽  
Hyunsoo Lim ◽  
Xingtao Xu ◽  
Md Shahriar A. Hossain ◽  
Jongbeom Na ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Carbon Electrodes ◽  
Capacitive Deionization ◽  
Porous Carbon Electrodes

Three-dimensional porous carbon materials and their composites as electrodes for electrochemical energy storage systems

2019 ◽  
Vol 3 (11) ◽  
pp. 2221-2245 ◽  
Author(s):  
Xiaoyang Deng ◽  
Jiajun Li ◽  
Liying Ma ◽  
Junwei Sha ◽  
Naiqin Zhao
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Recent Progress ◽  
Carbon Materials ◽  
Storage Systems ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
Energy Storage Systems ◽  
Porous Carbon Materials ◽  
Electrochemical Energy

This review describes the recent progress of 3D porous carbon materials and their composites as electrodes for electrochemical energy storage systems.

Rich sulfur doped porous carbon materials derived from ginkgo leaves for multiple electrochemical energy storage devices

2017 ◽  
Vol 5 (5) ◽  
pp. 2204-2214 ◽  
Author(s):  
Enchao Hao ◽  
Wei Liu ◽  
Shuang Liu ◽  
Yuan Zhang ◽  
Huanlei Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Multilayered Structure ◽  
Electrochemical Energy Storage ◽  
Energy Storage Devices ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
Excellent Electrochemical Performance

Based on the unique multilayered structure of ginkgo leaves, interconnected carbon nanosheets with rich micro/meso pores have been fabricated, showing excellent electrochemical performance in multiple energy storage devices.

Preparation of multifunctional porous carbon electrodes through direct laser writing on a phenolic resin film

2019 ◽  
Vol 7 (37) ◽  
pp. 21168-21175 ◽  
Author(s):  
Junbo Liu ◽  
Lijing Zhang ◽  
Cheng Yang ◽  
Shengyang Tao
Keyword(s):  
Laser Irradiation ◽  
Joule Heating ◽  
Porous Carbon ◽  
Phenolic Resin ◽  
Carbon Materials ◽  
Electrochemical Sensors ◽  
Carbon Electrodes ◽  
Direct Laser Writing ◽  
Direct Laser ◽  
Porous Carbon Electrodes

Multifunctional porous carbon materials prepared by laser irradiation on a phenolic resin were engineered into electrochemical sensors, microsupercapacitors, and Joule-heating devices.

scholarly journals Porous Carbon Materials Obtained by the Hydrothermal Carbonization of Orange Juice

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 655 ◽  
Author(s):  
Francesco Veltri ◽  
Francesca Alessandro ◽  
Andrea Scarcello ◽  
Amerigo Beneduci ◽  
Melvin Arias Polanco ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Photoelectron Spectroscopy ◽  
Orange Juice ◽  
Carbon Materials ◽  
Sorption Isotherms ◽  
Hydrothermal Carbonization ◽  
Carbon Quantum Dots ◽  
Energy Storage Devices ◽  
X Ray ◽  
Porous Carbon Materials

Porous carbon materials are currently subjected to strong research efforts mainly due to their excellent performances in energy storage devices. A sustainable process to obtain them is hydrothermal carbonization (HTC), in which the decomposition of biomass precursors generates solid products called hydrochars, together with liquid and gaseous products. Hydrochars have a high C content and are rich with oxygen-containing functional groups, which is important for subsequent activation. Orange pomace and orange peels are considered wastes and then have been investigated as possible feedstocks for hydrochars production. On the contrary, orange juice was treated by HTC only to obtain carbon quantum dots. In the present study, pure orange juice was hydrothermally carbonized and the resulting hydrochar was filtered and washed, and graphitized/activated by KOH in nitrogen atmosphere at 800 °C. The resulting material was studied by transmission and scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and nitrogen sorption isotherms. We found porous microspheres with some degree of graphitization and high nitrogen content, a specific surface of 1725 m2/g, and a pore size distribution that make them good candidates for supercapacitor electrodes.

scholarly journals Nitrogen-doped porous carbon materials generated via conjugated microporous polymer precursors for CO2 capture and energy storage

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32496-32501 ◽  
Author(s):  
Yongjie Xu ◽  
Shaoping Wu ◽  
Shijie Ren ◽  
Junyi Ji ◽  
Yong Yue ◽  
...  
Keyword(s):  
Energy Storage ◽  
Co2 Capture ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Porous Carbon Material ◽  
Nitrogen Doped ◽  
Storage Performance ◽  
Polymer Precursors ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer

Nitrogen-doped porous carbon material NPCM-1 exhibits much higher supercapacitive energy storage performance than its non-doped analogue PCM-1.

Heteroatom-doped porous carbon derived from “all-in-one” precursor sewage sludge for electrochemical energy storage

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45827-45835 ◽  
Author(s):  
Shi-Jie Yuan ◽  
Xiao-Hu Dai
Keyword(s):  
Energy Storage ◽  
Sewage Sludge ◽  
Porous Carbon ◽  
Storage Capacity ◽  
Electrochemical Energy Storage ◽  
Charge Storage ◽  
Carbon Nanomaterial ◽  
Excellent Stability ◽  
Electrochemical Energy

A unique heteroatom (N, O) doped porous carbon nanomaterial with favorable charge storage capacity and excellent stability and durability was synthesized via direct pyrolysis of “all-in-one” precursor sewage sludge.

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