SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Chao Peng,Hang Su,Jing Li,Qiuyue Duan,Qianhui Li,Junyan Xiao,Zhiliang Ku,Jie Zhong,Wei Li,Yong Peng,Fuzhi Huang,Yi-bing Cheng
Compared with traditional rigid perovskite solar cells fabricated on glass, flexible perovskite solar cells have a wider range of applications due to their lightweight and bendability , which have attracted great attention. Besides, carbon materials have shown some advantages of abundance, long-term stability and appropriate energy level as top electrode in perovskite solar cells. However, the reports of flexible devices based on carbon electrode are quite rare for the mismatch between the configuration of flexible perovskite solar cells and common carbon electrode techniques. Here, we introduce carbon film electrode into flexible perovskite solar cells for the first time. A new composite carbon film electrode is prepared on a highly conductive and flexible substrate of conductive cloth. Considerable PCEs of 15.37% and 14.05% have been obtained in small area (0.1 cm 2 ) and large area (1 cm 2 ) carbon based flexible devices, respectively. The comparable performance with standard Au electrode device, enhanced stability and suitability for roll-to-roll manufacturing reveals promising application of this low-cost composite carbon electrode.
研究领域:
材料科学
·
可再生能源
·
太阳能电池
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Zonglin Pan,Fangpeng Yu,Lin Li,Ming Liu,Chengwen Song,Jiawei Yang,Hanxu Li,Chunlei Wang,Yanqiu Pan,Tonghua Wang
A novel electrochemical filtration carbon membrane (ECM) was developed from caking coal via self-bonding in this work. The evolutions of chemical structure, morphology, carbon microstructure from nonconductive precursor membrane to conductive ECM during carbonization were systemically investigated by FTIR, SEM, Raman and XRD. The evolution mechanism of electrical conductivity and electrochemical performance of ECM was proposed and discussed. The electrochemical filtration performance of ECM was evaluated by using the phenol as simulated pollutant in wastewater treatment. It was found that the precursor membrane underwent the violent thermal decomposition and condensation during carbonization. The electrical conductivity and electrochemical performance of ECM depended strongly on carbonization temperature (CT), which was attributed to the evolution of carbon microstructure such as the growth of the conductive carbon clusters and defect graphite lattices (active sites) as CT increased. The electrochemical filtration performance of ECM on phenolic water was strongly correlated to its electrochemical properties. The higher electrochemical activity of ECM would result in the better electrochemical filtration performance. The ECM obtained at 950 °C exhibited the optimal overall performance, and its phenol and COD removal rates were up to 91.65% and 81.89% under the applied voltage of 2.0 V, respectively. The mechanism of electrochemical oxidation involved in ECM included the direct oxidation and indirect oxidation, in which the indirect oxidation was caused by the electro-catalytic activity of minerals existed in ECM.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xue-Jie Zhang,Wen-Cui Li,Ya-Qi Ba,Gang Li,Guang-Ping Hao,An-Hui Lu
The uptake of hydrogen (H 2 ) from natural gas pipelines (CH 4 ) through membrane separation technology is an efficient avenue of obtaining H 2 resources. Carbon membranes have the potential to be an attractive option for energy-efficient gas separations in the next generation of membranes due to their precise molecular discrimination ability and easy scalability. Here, we report a carbon membrane composed of a mesoporous substrate, seed layer and sieving layer, achieving a one-step uptake with 55.3 × 10 -9 mol·m −2 ·s −1 Pa −1 permeance and a separation factor for H 2 /CH 4 of 359.1 by feeding hydrogen (20 vol%). As revealed by the kinetic diffusion experiment, H 2 is transported in mesoporous substrate via Knudsen flow, differing from the transition flow taken by CH 4 , thus H 2 diffusion rates exceed CH 4 by an order of magnitude, which substantially increased H 2 purity from 20 vol% to higher purity as gas mixtures passed through the substrate. Then, the H 2 passed through the seed layer and sieving layer, resulting in a final H 2 purity of ∼ 99 vol%, a sharp increase from the initial low concentration. This carbon membrane integrates three functions of capture, pre-separation and purification into one material and provides a new solution for the uptake of H 2 from CH 4 .
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Haifeng Jiang,Xin Xie,Jie Chen,Xuefan Guo,Yanfeng He,Zhengru Lian
This work cleverly utilizes the sulfur contained in lignin itself to achieve the self-growth of calcium sulfide on the surface of electrospun lignin-based carbon membranes, and successfully applies it to the efficient capture of CO 2 . The membrane is synthesized through electrospinning technology combined with one-step calcium loading and carbonization process. The maximum adsorption capacity of the membrane is 1.56 mmol/g at 500 ℃ with a mixed gas of 99 % N 2 and 1 % CO 2 . The Avrami fractional kinetic model indicates that the CO 2 adsorption process is a combination of single-layer and multi-layer adsorption behavior. More importantly, this work innovatively proposes utilizing the CO 2 capture process to promote the migration of sulfur in lignin. Sulfur containing product such as calcium sulfate is generated during the CO 2 capture process. All in all, this work not only lays the foundation for the application of lignin in CO 2 capture, but also provides crucial support for the efficient capture of CO 2 and the advancement of poly-generation technology based on carbon capture.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Yihua Wang,Dongshan Li,Lunlin Shang,Fu Wang
In this work, the tribological properties of polyhydroxy molecule ascorbic acid as lubricating additive was investigated in graphite-like amorphous carbon film/bearing steel interface under polyethylene glycol lubrication . It was shown that ascorbic acid is an excellent friction modifier in graphite-like carbon film solid-liquid lubrication. The friction coefficient decreased from 0.12 of polyethylene glycol to around 0.02 (83.3 % reduction) of polyethylene glycol with >1 wt% ascorbic acid. Ascorbic acid had a little effect on the wear rate of graphite-like carbon film but promoted the steel ball wear. Ascorbic acid inhibited the oxidation of worn surface of steel ball and induced a more oxidized carbon film surface. The oxidized carbon surface and the increased contact area due to steel ball wear facilitated the adsorption of polyethylene glycol molecules at the sliding interface, which helped to establish fluid lubrication film and thereby resulted in ultra-low friction. This suggests that ascorbic acid is a promising candidate friction modifier to design novel ultra-low friction solid-liquid composite lubrication systems based on amorphous carbon films.
研究领域:
材料科学
·
表面工程
·
润滑技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yaqin Rong,Shuai Li,Junjian Niu,Zhongde Wang,Xiaogang Hao,Chengwen Song,Tonghua Wang,Guoqing Guan
Radioactive cesium ( 137 Cs) ions exhibit high-energy gamma radiation and long half-life. When they enter water body, serious environmental problems and damage to the human body are always generated. Herein, an electroactive composite membrane was facilely prepared by uniformly deposition of nickel hexacyanoferrate (NiHCF) nanoparticles on the surface and inner wall of coal-based tubular carbon membrane (CTCM) for rapid and selective separation of Cs + from wastewater. This NiHCF incorporated CTCM tube exhibited an extremely high removal rate (over 99.99%) over a long period. Meanwhile, it also demonstrated extreme Cs + selectivities even in the solutions with high coexisting ion concentrations (e.g., Cs + :Na + = 1:99, Cs + :K + = 1:99). The rapid and selective Cs + uptake/release should be attributed to the better dispersion of NiHCF nanoparticles with high selectivity to Cs + in the CTCM tube, which reduced the mass transfer distance, increased fluid turbulence and accelerated mass transfer rate. It is expected that such a NiHCF incorporated CTCM tube could be a promising alternative of conventional materials for the separating of radioactive Cs + ions.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Guoliang Xu,Mingming Wu,Taotao Ji,Chen Wang,Sixing Chen,Yi Liu
Although having shown great promise in gas separation, reverse osmosis , and nanofiltration , preparation of carbon membranes, which commonly involves elaborate high-temperature pyrolysis or exfoliation-reassembly, still suffers from complicated fabrication procedure and/or high production cost. In this study, we pioneered the preparation of continuous asymmetric carbon membrane through facile mechanical rubbing of a pencil graphite. Among them, 2B-type pencil with 64 wt% graphite exhibited superior nanofiltration performance (Congo Red rejection rate of 99.4% and water flux of 21.91 L·m −2 ·h −1 ·bar −1 ). Long-time operation confirmed its excellent stability. Of particular note, the spent membrane could be facilely recovered by erasing, resulting in not only zero pollutant discharge but also full recovery and reutilization of the substrate. The above protocol is anticipated to pave an avenue for facile and sustainable production of versatile carbon membranes with superior separation performances.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Joule
·
2022
·
IF 46.048
Sunmiao Fang,Jidong Li,Ying Xu,Chun Shen,Wanlin Guo
The conversion of ambient heat into electricity through ubiquitous natural evaporation offers hope for new green energy technologies. So far, evaporation-induced electricity has relied mainly on the classical streaming potential, which is an electric potential generated by driving an electrolyte through a narrow channel under a pressure gradient. Here, we show that evaporation of ethanol from nanostructured carbon films can produce a sustainable volt-level potential in an environment free from the streaming potential, which we term the evaporating potential. This evaporating potential is proven to occur within a narrow partially wetted region ahead of the main capillary film and is directly generated by carrier transfer driven by evaporation of ethanol molecules. It is also shown that other polar solvents can generate potentials comparable to those induced by ethanol. The finding could open a new way to harvest environmental energy through natural processes.
研究领域:
能源科学
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材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2021
·Vol. 30
·期 4
·2462-2472
·
IF 1.819
Zang Chao,Yang Ming,Jia Zhengfeng,Zhang Jing,Jiang Jinlong,Li Wei,Su Changhua,Zhang Ran
In this study, dopamine and graphene oxide (GO) solutions were spin-coated on the silicon wafers to obtain the GO/polydopamine (PDA) films. The carbon films were subsequently fabricated by annealing the GO/PDA films in argon atmosphere. The atomic force microscopy analysis was performed to characterize the morphology and tribological properties of the composite films. The developed carbon films exhibited lower friction coefficient and high adhesion between composite films and substrate as compared to the untreated films, which was attributed to the enhanced hydrophobicity, improved hardness and elastic modulus and chemical bonding of the films with substrate. The findings obtained in this study would lead to an efficient design of the anti-wear nanofilms for the micro-/nanoelectronic mechanical systems.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2019
·
IF 3.31
Shiwei Liu,Kai Li,Xuebin Zheng
A facile UV-photolysis method has been developed to synthesize birnessite-type MnO 2 nanosheets on carbon film at room temperature for supercapacitor electrode materials. The results clearly demonstrated that the specific capacitance of carbon/MnO 2 composite electrodes was controlled by the adjustable UV-photolysis reaction time in KMnO 4 solution. For the optimized composite electrode obtained after 2 h reaction, a superior specific capacitance of 277 F g −1 was achieved at current density of 0.2 A g −1 . This finding suggests that UV-photolysis is a potential method to fabricate MnO 2 on carbon film for supercapacitor.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Chemosensors
·
2021
·Vol. 9
·期 8
·236
·
IF 3.398
Chuqing Zhang,Yang He,Jianbo Wu,Manqing Ai,Wei Cai,Ying Ye,Chunhui Tao,Pingping Zhang,Quan Jin
Real-time measurements of carbonate ion concentrations in the ocean are critical to advancing marine environmental monitoring and research into deep-sea hydrothermal activity. Herein, we report the first example of deep-sea hydrothermal field exploration using a carbonate ion-selective electrode (ISE). The novel carbonate ISE was composed of a Ni wire as substrate, carbon film as transducers and carbonate-selective membrane layers. This paper describes the preparation process of the electrode and characterises its performance via scanning electron microscopy (SEM) and electrochemical analysis. The detection limit of the electrode for CO32−is 2.821 × 10−6mol/L, the linear response range is 1.0 × 10−5–1.0 × 10−1mol/L and the Nernst slope was −30.4 mV/decade. In April 2021, the carbonate ISE was mounted on multi-parameter sensors with pH and Eh (redox) electrodes for the search of hydrothermal activity at the Southwest Indian Ridge. The simultaneous potential anomalies appeared at this carbonate electrode with the pH and Eh electrodes when passing through the hydrothermal field. The study of the hydrothermal field was supported by the in situ camera video and the sulphide samples. Additionally, the carbonate electrode provides enhanced information of water chemistry for the study of the hydrothermal field.Keywords:ion-selective electrode;carbonate determination;carbon film;hydrothermal field
研究领域:
海洋科学
·
环境监测
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Dawei Xu,Dipan Xuan,Yongchao Liao,Fenqiang Luo,Taiyu Lyu,Minghao Chen,Chaoran Liu,Qian Liu,Zhuang Wang,Shuirong Li,Dechao Wang,Zhifeng Zheng,Lingzheng Bu
In order to obtain high performance, economic and environmentally friendly supercapacitor electrodes, lignin is converted into lignin-based phenolic resin and spun with polyvinyl alcohol (PVA) to obtain lignin-derived carbon membrane (LCM). Then LCM is used as substrate, and α-Fe 2 O 3 /LCM and LCM@ppy-10 composite materials are prepared as positive and negative electrodes, respectively, of supercapacitor electrodes. The results show that the composite electrodes have excellent electrochemical performance . At the current density of 1 mA cm −2 , α-Fe 2 O 3 /LCM and LCM@ppy-10 show a high area specific capacitance of 487 mF cm −2 and 440 mF cm −2 , respectively. The capacitance of the symmetrical button cells assembled by each electrode almost shows stability after 5000 cycles. In different systems, such as asymmetric aqueous supercapacitor and solid-state asymmetric supercapacitor , the composite electrodes also have excellent performance. The voltage of asymmetric supercapacitors is 1.6 V with area specific capacitance of 101 mF cm −2 at 1 mA cm −2 . After 10,000 cycles at 2 mA cm −2 , the specific capacitance decreases by only 5 %. The area specific capacitance and volume specific capacitance of solid-state asymmetric supercapacitor is 89 mF cm −2 and 1.74 F cm −3 , respectively, at 1 mA cm −2 . The maximum energy density and maximum power density of the solid-state asymmetric supercapacitor can reach 0.62 mWh cm −3 and 77.2 mW cm −3 . This method can provide a new reference for the preparation of composite electrode with LCM as current collector.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）