JOURNAL OF APPLIED ELECTROCHEMISTRY
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2024
·
IF 2.4
Bi Cen,Wen Qing,Chen Ye,Xu Haitao
Microbial fuel cell (MFC) has been regarded as a promising green and clean electricity generation device. The anode plays a crucial role in the electricity generation process within the MFC. This study employed a hydrothermal method for the doping of sulfur onto MXene nanosheets to alleviate the stacking, followed by an in situ polymerization process to fabricate sufur-doped MXene/polypyrrole (S–MXene/PPy) composite hydrogel on carbon felt (CF). The MFC constructed with this anode exhibited the highest power density of 8.05 W m −3 and a maximum output voltage of 646 mV, higher than that of MXene/PPy (623 mV, 6.03 W m −3 ), PPy (594 mV, 4.91 W m −3 ), and unmodified CF (574 mV, 4.05 W m −3 ). This improved performance can be attributed to the reduction of charge transfer resistance in the material while improving the bacteria affinity, leading to enhanced extracellular electron transfer (EET) efficiency. High-throughput sequencing indicates that the excellent biocompatibility significantly promotes the attachment and growth of electroactive microorganisms ( Geobacter , 45.34%) on the S–MXene/PPy anode. This study demonstrates that S–MXene/PPy hydrogel has good potential as an anode from the perspective of MFC electricity generation and microbial analysis. Graphical abstract
研究领域:
环境科学
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材料科学
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wenli Ma,Lin Tian,Qingqing Zhu,Shuhuan Zhang,Fanghui Wang,Hong Zhu
To prepare anion exchange membranes with high water electrolysis and single fuel cell performance, an inorganic–organic composite (IOC) strategy with click cross-linked membranes coated with different contents of hydrophilic polar nanozirconia is proposed to fabricate composite membranes (CM) PBP-SH-Zrx. The performance test results showed that the CM PBP-SH-Zr4 not only has good through-plane ionic conductivity (167.7 mS cm–1, 80 °C), but also exhibits satisfactory dimensional stability (SR 16.5%, WU 206.4%, 80 °C), especially demonstrating excellent alkaline stability with only 16% degradation (2 M NaOH for 2200 h). In water electrolysis, the “microgap” between the membrane and catalyst layer (solid–solid interface) is alleviated, and the membrane electrode assembly (MEA) interfacial compatibility (liquid–solid–solid interface) is enhanced. The CM PBP-SH-Zr4 showed the lowest charge transfer resistance (Rct, 0.037 Ω cm2) and a high current density of 2.5 A cm–2 at 2.2 V, while the voltage drop was 0.361 mV h–1 after 360 h of endurance (six start–stop cycles) at 60 °C and 500 mA cm–2, proving a good water electrolysis durability. Moreover, an acceptable peak power density of 0.464 W cm–2 at 80 °C is achieved in a H2/O2 fuel cell with a PBP-SH-Zr4-AEM. Therefore, the IOC strategy can enhance the membrane’s comprehensive performance and interface compatibility of MEA and may promote the development of anion exchange membranes (AEMs) for water electrolysis and fuel cells.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY
·
2025
·
IF 9.4
Haojie Zhu,Junbiao Li,Yuan Zhang,Zhipeng Liu,Junda You,Guoqing Ma,Ling Fu,Senran Hao,Hongxin Yang,Shuo Zhai,Pengfei Wang,Jing Zhu,Suling Shen,Jialiang Chen,Ying Teng,Bin Chen,Heping Xie
The traditional utilization of coal fuels is primarily through direct combustion to generate electricity, with low efficiency and significant carbon dioxide emissions conflicting with the goal of carbon neutrality. Here, for the first time, we proposed a novel electrochemical system to achieve the tri-generation of hydrogen, power, and methane from coal-based fuels, with CO 2 emission efficiency reduced in tail gas, enabled by protonic ceramic fuel cells (PCFCs) combined with water gasification of coal and CO 2 methanation. As demonstrated, the system firstly achieved an enhanced hydrogen production rate of up to 34.8 μmol min −1 g −1 from the syngas produced by coal gasification. Sequentially, the system achieved an excellent peak power density of 868 mW cm −2 at 600 °C in the PCFCs fueled by the syngas, enhanced by a catalytic functional layer (CFL, NiMn@YSZ). In addition, the system is able to produce methane at 6.3 mL min −1 during in-situ CO 2 methanation at 500 °C with a current density of 110 mA cm −2 . This work introduces a new electrochemical strategy for efficiently utilizing coal to generate electricity and value-added chemicals.
研究领域:
能源科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2016
·Vol. 163
·期 13
·F1309
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IF 3.014
Xiaojing Chen,Wen Wen,Jing Hu,Hejia Su,Haibin Li,Xiangyang Kong,Marta Boaventura
Based on CsH5(PO4)2, sulfonated poly(ether ether ketone) (SPEEK), and phosphosilicate sol, proton-conducting CsH5(PO4)2/phosphosilicate/SPEEK composite electrolyte membranes have been prepared by a sol–gel method followed by mechanical ballmilling. The chemical structures, morphologies, thermal performances, stability, and proton conductivities of the composite electrolyte membranes were investigated. After incorporating the SPEEK polymer, these composite membranes exhibited adequate flexibility and mechanical performance; despite inorganic content of up to 80 wt%, a tensile strength of 6.2 MPa was maintained. Specifically, the composite electrolyte membrane displays a high proton conductivity of 14.6 mS cm−1 at 250°C under 47% H2O/N2 atmosphere. A fuel cell equipped with the composite electrolyte membrane showed a stable output voltage over the continuous measurement of 50 h under a constant output current density of 40 mA cm−2.
研究领域:
材料科学
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能源工程
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化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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IF 4.939
Ting Pan,Baohua Yue,Liuming Yan,Guangbo Zeng,Yidong Hu,Shufa He,Wei Lu,Hongbin Zhao,Jiujun Zhang
Novel functionalized polysulfone with high local density of sulfonic acid groups, N , N -bis(sulfopropyl)aminyl-4-phenyl polysulfone or O , O′ -bis(sulfopropyl)resorcinol-5-yl-4-phenyl polysulfone (PSF-X-C 3 H 6 SO 3 H, X = N or O) are synthesized. These polymers are synthesized by bromination of polysulfone followed by Suzuki cross-coupling reaction to graft the aminophenyl groups and the dimethoxyphenyl groups onto the polymeric backbone, followed by introduction of the sulfopropyl groups via sultone ring-opening reaction. In addition, the composite membrane of PSF-O-C 3 H 6 SO 3 H and PSF-N-C 3 H 6 SO 3 H is also synthesized for comparison. The maximum proton conductivity of composite PSF-O-C 3 H 6 SO 3 H and PSF-N-C 3 H 6 SO 3 H reaches 46.66 mS cm −1 at 95 °C and 90% RH, higher than PSF-O-C 3 H 6 SO 3 H (42.06 mS cm −1 ) and PSF-N-C 3 H 6 SO 3 H (38.76 mS cm −1 ). Meanwhile, the composite exhibits compromised water uptake and swelling ratio, and low methanol permeability . The excellent overall performance of the composite is attributed to phase-separation between the hydrophilic and the hydrophobic subphases, and the hydrogen-bonding network developed in the hydrophilic subphases.
研究领域:
材料科学
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化学工程
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
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2017
·Vol. 7
·期 7
·201
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IF 3.082
Xinxin Jin,Yan Xie,Jiahui Huang
Metal macrocycle based non-noble metal electrocatalysts (NNMEs) with highly efficient oxygen reduction reaction (ORR) activity, good stability, and excellent resistance to the methanol cross-over effect have been regarded as one of the most important alternatives for Pt or Pt based alloys, which are widely used in fuel cells. However, the expensive price of most metal macrocycles hinder further investigation of such a family of NNMEs in large production for practical applications. Here, we introduce a simple strategy to synthesize metal macrocycle based porous carbon (MMPC) material with low cost and easy production of metal macrocycles (hemin (Hm) and vitamin B12(VB12)) as raw materials by using a hard template of MgO. The pyrolysis of MMPC under the optimal temperature at 900 °C shows comparative ORR performance relative to commercial Pt/C, which could be attributed to the large surface area, macro-/mesoporous structure, the carbon layer encapsulating transition metal based oxides, as well as N-doped carbon species. In addition, MMPC (900) displays a better electrochemical property than 20 wt % Pt/C in terms of durability and tolerance to methanol in O2-saturated 0.1 M KOH media.Keywords:metal macrocycle;macro-/mesoporous structure;oxygen reduction reaction;fuel cell
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Chen Ding,Zijie Mao,Jia-Shun Liang,Xianxian Qin,Qing Zhang,Fan Yang,Qing Li,Wen-Bin Cai
The commercialization of proton exchange membrane fuel cells (PEMFCs) calls for the development of active and durable Pt-based catalysts for oxygen reduction reaction (ORR) by means of a cost-effective and environmentally benign protocol. We report herein an all aqueous phase preparation of carbon supported Au-modified Pt–Co alloy catalyst (Au/Pt–Co/C), which involves the dimethylamine borane co-reduction of aqueous Pt(II) and Co(II) precursors to form a Pt–Co/C catalyst and the ethanol reduction of an aqueous Au(III) precursor to form Au/Pt–Co/C. This Au/Pt–Co/C catalyst not only shows a greatly enhanced ORR activity like the homemade Pt–Co/C and state-of-art Pt–Co/C(com) catalysts as compared to the Pt/C catalyst but also exhibits a much higher durability over the Pt/C(com), homemade Pt–Co/C, and state-of-art Pt–Co/C(com) catalysts in accelerated degradation tests (ADTs) with both half-cell and single-cell configurations. Specifically, the maximum power density of a PEMFC involving the Au/Pt–Co/C cathode suffers only a 6% loss after 30 000 cycles of a standard ADT while that involving the state-of-art Pt–Co/C(com) suffers a 37% loss. This research provides an alternative route to prepare efficient and durable Pt-based ORR catalysts toward a widespread application of PEMFCs.
研究领域:
材料科学
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化学工程
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Environmental Research and Public Health
·
2023
·Vol. 20
·期 4
·3437
·
IF 4.614
Fan Zhao,Yini Chen,Shiyang Zhang,Meng Li,Xinhua Tang
A three-dimensional (3D) anode is essential for high-performance microbial fuel cells (MFCs). In this study, 3D porous carbon monoliths from a wax gourd (WGCM) were obtained by freeze-drying and carbonization. Nano-TiO2was further coated onto the surface of WGCM to obtain a nano-TiO2/WGCM anode. The WGCM anode enhanced the maximum power density of MFCs by 167.9% compared with the carbon felt anode, while nano-TiO2/WGCM anode additionally increased the value by 45.8% to achieve 1396.2 mW/m2. WGCM enhancement was due to the 3D porous structure, the good conductivity and the surface hydrophilicity, which enhanced electroactive biofilm formation and anodic electron transfer. In addition, nano-TiO2modification enhanced the enrichment ofAcinetobacter, an electricigen, by 31.0% on the anode to further improve the power production. The results demonstrated that the nano-TiO2/WGCM was an effective anode for power enhancement in MFCs.Keywords:microbial fuel cells;anode;carbon monolith;nano-TiO2;Acinetobacter
研究领域:
环境科学
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微生物学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the American Chemical Society
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2022
·
IF 16.383
Fei Xiao,Yian Wang,Gui-Liang Xu,Fei Yang,Shangqian Zhu,Cheng-Jun Sun,Yingdan Cui,Zhiwen Xu,Qinglan Zhao,Juhee Jang,Xiaoyi Qiu,Ershuai Liu,Walter S. Drisdell,Zidong Wei,Meng Gu,Khalil Amine,Minhua Shao
The poor durability of Pt-based nanoparticles dispersed on carbon black is the challenge for the application of long-life polymer electrolyte fuel cells. Recent work suggests that Fe- and N-codoped carbon (Fe–N–C) might be a better support than conventional high-surface-area carbon. In this work, we find that the electrochemical surface area retention of Pt/Fe–N–C is much better than that of commercial Pt/C during potential cycling in both acidic and basic media. In situ inductively coupled plasma mass spectrometry studies indicate that the Pt dissolution rate of Pt/Fe–N–C is 3 times smaller than that of Pt/C during cycling. Density functional theory calculations further illustrate that the Fe–N–C substrate can provide strong and stable support to the Pt nanoparticles and alleviate the oxide formation by adjusting the electronic structure. The strong metal–substrate interaction, together with a lower metal dissolution rate and highly stable support, may be the reason for the significantly enhanced stability of Pt/Fe–N–C. This finding highlights the importance of carbon support selection to achieve a more durable Pt-based electrocatalyst for fuel cells.
研究领域:
材料科学
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电化学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Xinyue Li,Hongjing Fei,Yanlin Zhang,Zheng Zhang,Huakang Zong,Bo Liu,Guotao Duan,Yuanyuan Luo
The detection of low-concentration hydrogen at room temperature is still a challenge, which contributes to taking precautions as soon as possible when hydrogen leaks. In this study, we prepared Pt/SnO 2 -Pd nanomaterial as nanoelectrode applied for a fuel cell-type hydrogen sensor with zero power consumption . The sensing results show that such fuel cell-type H 2 gas sensor has high selectivity and good sensitivity to H 2 gas, with an unprecedented low detection limit of 1 ppm, and the humidity has little impact on the sensor's performance. Based on DFT calculations, the low adsorption energy and the electron transfer interaction between Pd and H promote the adsorption and dissociation processes of H 2 molecules, which lead to the hydrogen oxidation reaction acceleration and shorter times of response and recovery. In addition, this Pt/SnO 2 -Pd based sensor has also advantages of high selectivity and zero-power consumption, which may provide a broad application prospect for fuel cell vehicles and voltage transformers, etc.
研究领域:
材料科学
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纳米技术
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2018
·
IF 4.136
Qingfeng Xu,Wenlong Chen,Yucong Yan,Zhemin Wu,Yi Jiang,Junjie Li,Ting Bian,Hui Zhang,Jianbo Wu,Deren Yang
Incorporating Pt with core metals into Pt-based core-shell catalysts is regarded as a promising strategy to substantially enhance the catalytic properties towards oxygen reduction reaction (ORR) in fuel cells due to the synergetic effect between distinct metals. In this wok, ultrathin Pt skins with two atomic layers were epitaxially coated on as-prepared icosahedral Au 50 Pd 50 , Au 60 Pd 40 and Au 66 Pd 34 nanocrystal seeds, which are constructed with alloyed cores and Pd shells with different thickness. Through electron microscopic characterizations, Pd interlayers with tunable thickness of 3, 6, and 12 atomic layers can be found in the Au 66 Pd 34 @Pt, Au 60 Pd 40 @Pt and Au 50 Pd 50 @Pt icosahedra, respectively. These icosahedral AuPd@Pd@Pt nanocrystals show substantially enhanced activities and durabilities in electrocatalytic measurements towards ORR compared to Au 75 Pd 25 @Pt icosahedra without Pd interlayer and commercial Pt/C catalysts. Specifically, Au 60 Pd 40 @Pt icosahedra with 6 atomically thick Pd interlayer display the best electrocatalytic performances, whose mass activities before and after durability tests of 50,000 cycles are 11.6 and 30.2 times, respectively, as high as that of the commercial Pt/C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yanru Yin,Qi Xiao,Wenying Zhang,Kai Li,Dong Yan,Jian Li,Lichao Jia
Cathode materials greatly govern the performance of protonic ceramics fuel cells (PCFCs), and development of suitable cathodes for PCFCs now becomes important. In this study, the traditional proton conductor BaZrO 3 is tailored with Sr and Fe elements, aiming to design proper cathodes for PCFCs. The structural, electronic, and catalytic effects of dual-element doping on BaZrO 3 -based materials are systemically investigated. Experimental and computational analyses reveal that a 75 % iron doping concentration (BaZr 0 · 25 Fe 0 · 75 O 3 ) markedly enhances oxygen vacancy concentration, reduces proton migration barriers, and elevates electrical conductivity. Notably, moderate strontium doping (50 %) synergistically improves performance, whereas excessive doping (75 %) induces adverse effects on oxygen vacancy concentration, proton migration, and electrical conductivity. The optimized Ba 0 · 5 Sr 0 · 5 Zr 0 · 25 Fe 0 · 75 O 3 cathode achieves a peak power density of 945 mW cm -2 at 700 °C. These findings elucidate the interplay between dopant elements, doping concentrations, and material properties related to electrochemical performance, offering actionable strategies for designing high-performance PCFC cathodes.
研究领域:
材料科学
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能源科学
✓ 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）