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Wu SC, Lin CW, Chang PC, Yang TY, Tang SY, Wu DC, Liao CR, Wang YC, Lee L, Yu YJ, Chueh YL. Ecofriendly Synthesis of Waste-Tire-Derived Graphite Nanoflakes by a Low-Temperature Electrochemical Graphitization Process toward a Silicon-Based Anode with a High-Performance Lithium-Ion Battery. ACS Appl Mater Interfaces 2023; 15:15279-15289. [PMID: 36921119 DOI: 10.1021/acsami.2c20393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Here, the successful transformation of graphitic carbon with a high degree of graphitization and a nanoflake structure from pyrolytic tire carbon black was demonstrated. First, amorphous carbon black with a porous structure was obtained after pyrolysis and simple preacid treatments. Subsequently, the carbon black was converted into a highly graphitic structure at a relatively low temperature (850 °C) through a facile electrochemical route using molten salt, which is ecofriendly and has high potential for large-scale graphitization compared to conventional incineration techniques. Moreover, we further improved the crystallinity and uniformity of the product simultaneously by directly mixing the metal oxide catalyst Fe2O3 with a carbon precursor. The mechanism of this metal-catalyzed electrochemical graphitization has been discussed in detail. To confirm their potential in practical applications, the as-prepared graphitized nanoflakes were used as conductive additives for silicon anodes in lithium-ion batteries, which showed a performance comparable to those utilizing commercial Super-P additives, exhibiting an initial Coulombic efficiency of approximately 79.7% and a high capacity retention of approximately 45.8% after 100 cycles with a reversible capacity of 1220 mAh g-1 at a current rate of 400 mA g-1. Hence, successfully recovered waste-tire-derived carbon black utilizing a low-temperature Fe2O3-catalyzed electrochemical process opens a pathway in low-temperature graphitization toward a sustainable value-added application in the field of energy storage.
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Affiliation(s)
- Shu-Chi Wu
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Ching-Wei Lin
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Pai-Chun Chang
- Greenway Revolution Pte. Ltd., Bartley Ridge, Singapore 368063, Singapore
| | - Tzu-Yi Yang
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Shin-Yi Tang
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
| | - Ding-Chou Wu
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Cheng-Ru Liao
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Yi-Chung Wang
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Ling Lee
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
| | - Yi-Jen Yu
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
- Instrument Center, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan
- College of Semiconductor Research, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yet-Sun University, Kaohsiung 80424, Taiwan
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Wang Y, Wang DN, Liao CR, Hu T, Guo J, Wei H. Temperature-insensitive refractive index sensing by use of micro Fabry-Pérot cavity based on simplified hollow-core photonic crystal fiber. Opt Lett 2013; 38:269-271. [PMID: 23381407 DOI: 10.1364/ol.38.000269] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A temperature-insensitive micro Fabry-Pérot (FP) cavity based on simplified hollow-core (SHC) photonic crystal fiber (PCF) is demonstrated. Such a device is fabricated by splicing a section of SHC PCF with single mode fibers at both cleaved ends. An extremely low temperature sensitivity of ~0.273 pm/°C is obtained between room temperature and 900°C. By drilling vertical micro-channels using a femtosecond laser, the micro FP cavity can be filled with liquids and functions as a sensitive refractometer and the refractive index sensitivity obtained is ~851.3 nm/RIU (refractive index unit), which indicates an ultra low temperature cross-sensitivity of ~3.2×10(-7) RIU/°C.
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Affiliation(s)
- Ying Wang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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Wang Y, Liao CR, Wang DN. Embedded coupler based on selectively infiltrated photonic crystal fiber for strain measurement. Opt Lett 2012; 37:4747-4749. [PMID: 23164900 DOI: 10.1364/ol.37.004747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A photonic crystal fiber (PCF) with embedded coupler is demonstrated for strain measurement. The embedded coupler is constructed by the selective filling of one of the air holes in the PCF. Light propagated in the fiber core can be efficiently coupled to the liquid-filled rod waveguide under phase-matching conditions, resulting in sharp decreasing of resonant wavelength intensity. The highest strain sensitivity is calculated to be ~23.8 pm/με due to the coupling between core mode and fundamental mode of the liquid rod, when the refractive index (RI) of the liquid is 1.46. With the increase of the RI, the resonance can also be observed between the core mode and the higher-order modes of the liquid rod, whereas the strain sensitivity drops to ~6.4 pm/με. The experimentally obtained static strain sensitivity values are ~22 and ~3.8 pm/με for the coupling between the core mode and the fundamental mode or linearly polarized LP(11) modes of the liquid rod, respectively, which are in good agreement with the simulations. The dynamic strain measurement resolution obtained is ~1.2 nε/(Hz)(1/2).
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Affiliation(s)
- Ying Wang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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Yang M, Wang DN, Wang Y, Liao CR. Fiber in-line Mach-Zehnder interferometer constructed by selective infiltration of two air holes in photonic crystal fiber. Opt Lett 2011; 36:636-638. [PMID: 21368932 DOI: 10.1364/ol.36.000636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A fiber in-line Mach-Zehnder interferometer is fabricated through selective infiltrating of two adjacent air holes of the innermost layer in the solid core photonic crystal fiber, assisted by femtosecond laser micromachining. The liquid infiltrated has higher refractive index than that of the background silica, and, hence, the two rods created can support a guide mode with lower effective refractive index than that of silica. The interference is produced by the fiber fundamental mode and the guide mode. The free spectral range (FSR) of the interferometer is found to be dependent on the photonic crystal fiber length, and a large FSR corresponds to a short photonic crystal fiber length. Such an interferometer device is robust and exhibits extremely high temperature sensitivity (∼7.3 nm/°C for the photonic crystal fiber length of 3.4 cm) and flexible operation capability.
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Affiliation(s)
- M Yang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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Abstract
Fiber Bragg grating (FBG) is fabricated in the microfiber by the use of femtosecond laser pulse irradiation. Such a grating can be directly exposed to the surrounding medium without etching or thinning treatment of the fiber, thus possessing high refractive index (RI) sensitivity while maintaining superior reliability. The grating in the microfiber may have a number of propagation modes in its transmission spectrum, depending on the fiber diameter, and the higher order of mode has larger RI sensitivity. The RI sensitivity also depends on the fiber diameter and a smaller diameter corresponds to a large sensitivity. The maximum sensitivity obtained is approximately 231.4 nm per refractive index unit at the refractive index value of approximately 1.44 when the fiber diameter is approximately 2 microm. The FBG fabricated in the microfiber has high potential in various types of optical fiber sensor applications.
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Affiliation(s)
- X Fang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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Fang X, He XY, Liao CR, Yang M, Wang DN, Wang Y. A new method for sampled fiber Bragg grating fabrication by use of both femtosecond laser and CO2 laser. Opt Express 2010; 18:2646-2654. [PMID: 20174094 DOI: 10.1364/oe.18.002646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A new method for sample fiber Bragg grating fabrication by use of both femtosecond laser and CO(2) laser has been proposed and demonstrated. Such a method exhibits the advantages of high fabrication flexibility, and good thermal stability. The sampling period and duty cycle can be easily varied by changing the CO(2) laser beam scanning pattern during operation. The gratings produced have potential applications in optical communications, fiber lasers, and optical fiber sensors.
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Affiliation(s)
- Xia Fang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
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Li Y, Liao CR, Wang DN, Sun T, Grattan KTV. Study of spectral and annealing properties of fiber Bragg gratings written in H2-free and H2- loaded fibers by use of femtosecond laser pulses. Opt Express 2008; 16:21239-21247. [PMID: 19104554 DOI: 10.1364/oe.16.021239] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The spectral and annealing properties of a series of fiber Bragg gratings (FBGs) written in both H(2)-loaded and H(2)-free fibers by use of 800nm femtosecond laser pulse irradiation and created through a phase mask, have been investigated. It is found that type II FBGs inscribed in H(2)- loaded fibers exhibit superior spectral quality when compared with those written in H(2)-free fibers. Isochronal annealing tests shows that type II FBGs written in H(2)-free fibers have the highest thermal stability, followed (in order of stability) by H(2)-loaded type II, H(2)-free type I and then H(2)-loaded type I FBGs. The thermal stability of the H(2)-loaded type II FBGs can effectively be increased by using a high temperature pre-annealing treatment. After the treatment, type II FBGs written into both H(2)-free and H(2)-loaded fibers can sustain long-term annealing (for more than 12 hours) at temperatures of more than 1000 masculineC while their high reflectivities can still be maintained. This demonstrates the real potential of the FBGs developed and investigated in this work to be used as the ideal sensing elements for a series of high temperature measurement applications.
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Affiliation(s)
- Yuhua Li
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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