Nature Communications
·
2022
·Vol. 13
·期 1
·1-8
·
IF 17.694
Tan Jin,Fang Sunmiao,Zhang Zhuhua,Yin Jun,Li Luxian,Wang Xiang,Guo Wanlin
Generating sustainable electricity from ambient humidity and natural evaporation has attracted tremendous interest recently as it requires no extra mechanical energy input and is deployable across all weather and geography conditions. Here, we present a device prototype for enhanced power generation from ambient humidity. This prototype uses both heterogenous materials assembled from a LiCl-loaded cellulon paper to facilitate moisture adsorption and a carbon-black-loaded cellulon paper to promote water evaporation. Exposing such a centimeter-sized device to ambient humidity can produce voltages of around 0.78 V and a current of around 7.5 μA, both of which can be sustained for more than 10 days. The enhanced electric output and durability are due to the continuous water flow that is directed by evaporation through numerous, negatively charged channels within the cellulon papers. The voltage and current exhibit an excellent scaling behavior upon device integration to sufficiently power commercial devices including even cell phones. The results open a promising prospect of sustainable electricity generation based on a synergy between spontaneous moisture adsorption and water evaporation.
研究领域:
能源技术
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Hangchuan Cai,Congzhen Xie,Bin Gou,Jiangang Zhou,An Zhong,Daoming Zhang,Huasong Xu,Chunhui Bi,Rui Wang
Polymer coatings (PC) have been widely used for electrical equipment. However, the hydrophobicity of PC is generally low, which falls short of the need for electrical equipment against safe operation. Here, we report a scalable PC based on a SIS grafted KH590 by click chemistry reaction, and in-situ synthesized SiO 2 filled the coatings with intrinsic micro-nano structures to attain the superhydrophobicity, which are exhibit insulating property ( E b of 110.9 MV/m, wet flashover strength of 39.5 % higher). Both simulation and experimental results confirm that SIS grafted KH590 and TEOS hydrolyzed SiO 2 form dense but rough surface at the micron-nanoscale, decreasing surface energy. In combining the advantages of extraordinary insulating performance, this approach is viable for large-scale production of PC.
研究领域:
材料科学
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电气工程
✓ 已验证
产品关联
DOI
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
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
·
2023
·Vol. 59
·期 10
·817-829
·
IF 1.2
Jiaran Qi,Xu Yongjie,Chu Gang,Liu Xiaohong,Si Youbin
Abstract The widespread use of penoxsulam has increased the potential for environmental risks. In this study, a microbial fuel cell (MFC) was investigated and optimized for degradation of penoxsulam and corresponding power generation performance. Of the electricity producing bacteria tested, Shewanella putrefaciens was found to be the most suitable, and reached a maximum power of 260.4 mW/m 2 along with a penoxsulam degradation efficiency of 95%. MFC electrical performance was greatly enhanced by increasing the anode carbon felt surface area from 5 to 20 cm 2 , which raised the MFC electrical power from 90.3 to 240.3 mW/m 2 and increased the penoxsulam degradation efficiency in parallel. The initial penoxsulam concentration in the reaction system influenced MFC power generation, where higher initial penoxsulam concentrations inhibited microbial activity, decreased the MFC power performance, and reduced the penoxsulam degradation efficiency. In addition, the MFC reaction system pH influenced MFC electrical performance, and adjusting the pH to 8 increased the peak voltage and power density to 0.687 V and 264.8 mW/m 2 , respectively. S. putrefaciens secretes soluble compounds to mediate electron transfer and the addition of Riboflavin (RF) increases the charge transfer efficiency. Our findings provide a basis for revealing the mechanism by which organic contaminants are degraded in MFCs, and demonstrate the feasibility of MFCs for efficient penoxsulam degradation and power generation.
研究领域:
环境科学
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Min Wang,Zhenhua Yan,Baoxu Huang,Jinsheng Zhao,Renmin Liu
Enteromorpha prolifera bloom caused a series of environmental issues and deterioration due to its rapid growth and ability to grow in fresh or seawater. This study explores the utilization of Enteromorpha prolifera collected from southern portions of the Yellow Sea as a resource for electricity generation by air cathode microbial fuel cells (MFCs). The power density reached 1027 mW/m 2 with an initial hydrolysate concentration of 1,000 mg chemical oxygen demand (COD)/liter, while coulombic efficiencies and COD removal reached 69.1% and 76.1% respectively. For comparison, three monosaccharides (rhamnose, xylose and glucose) were also tested as the fuels in the anode solution, their power density, coulombic efficiencies and COD removal are almost at the same level. These results indicated that Enteromorpha prolifera might be suitable resources for electricity generation using the MFC technology.
研究领域:
环境科学
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生物能技术
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海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Luyao Zhao,Weicun Chu,Luyao Li,Cheng Wang,Zeliang Wei,Wei Deng,Riming Nie
Water evaporation-induced electricity devices (WEDs) have become extremely attractive, converting ambient heat into electricity while being environmentally friendly. However, most current WEDs are costly and cumbersome to fabricate, which greatly limits their commercialization process. Here, we present WEDs based on starch cross-linked with glass fiber filter paper (Starch-GF). A single device produced an open-circuit voltage of 0.3 V, a short-circuit current of 1.2 μA, and a maximum power density of 1.8 mW/m2 in a natural environment under 24 h of continuous measurements. Starch-GF devices can drive electronics after charging capacitors and have environmentally friendly properties. This research contributes significantly to the discovery of hydrovoltaic materials and their practical implementation in hydrovoltaic devices.
研究领域:
能源科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Liu Tao,Wang Yunpeng,Wu Yifan,Jiang Wenchuan,Deng Yuchao,Li Qing,Lan Cheng,Zhao Zhiyu,Zhu Liangyu,Yang Dongsheng,Noël Timothy,Xie Heping
Electrochemical CO 2 capture driven by renewable electricity holds significant potential for efficient decarbonization. However, the widespread adoption of this approach is currently limited by issues such as instability, discontinuity, high energy demand, and challenges in scaling up. In this study, we propose a scalable strategy that addresses these limitations by transforming the conventional single-step electrochemical redox reaction into a stepwise electrochemical-chemical redox process. Specifically, the hydrogen evolution reaction (HER) at the cathode and the oxidation of a redox carrier at the anode are employed to modulate the pH of the electrolyte, thereby facilitating effective CO 2 capture. By decoupling the electrochemical swing for CO 2 capture from redox carrier regeneration in both temporal and spatial domains, this approach mitigates unwanted side reactions and enhances system stability. Our results demonstrate a stable CO 2 capture process sustained for over 200 h, with a electrical work of 49.16 kJ e mol -1 CO 2 at a current density of 10 mA cm -2 . Furthermore, a scaled-up system capable of producing approximately 0.4 kg of pure CO 2 per day maintained stable operation for 72 h, highlighting the potential feasibility of this method for large-scale decarbonization applications.
研究领域:
环境科学
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电化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiannan Cheng,Tao Peng,Jie Li,Lijie Liu,Qingquan Tang,Luoxin Wang,Hua Wang,Jiang Gong
With the rapid popularity of liquid crystal polyesters (LCPs) in 5G chip packaging materials, a large amount of waste LCPs were produced. However, the recycling and reutilization of waste LCPs are rarely investigated so far. Herein, the waste LCPs are calcinated by “controlled carbonization” strategy to produce microporous carbons, showing potential in producing freshwater and electricity based on solar-irradiated photothermal conversion. ZnCl 2 /NaCl eutectic salts were used to catalyze the dehydration and decarboxylation of LCPs to form aromatic fragments and then construct microporous carbon skeletons. The resultant carbons show high specific surface areas and solar absorption efficiency. They were used to prepare interfacial solar steam evaporators, showing a high evaporation rate of 2.17 kg/m 2 /h with the energy conversion efficiency of 97.5 % and a high electricity generation with an output power of 0.902 W/m 2 under 1 sun irradiation. This work not only provides a feasible approach to the sustainable conversion of low-cost waste LCPs into valuable carbon materials by a “controlled carbonization” strategy, but also gives impetus to the potential of microporous carbons for application in solar freshwater and electricity generation.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
·
IF 8.1
Xianda Sun,Jinxu Hao,Siyi Bao,Xin Ye,Bingye Song,Xuankai Zhang,Yuandong Yang
The huge energy consumption primarily resulting from the sluggish oxygen evolution reaction (OER) is the paramount hindrance in achieving the cost-effectiveness of hydrogen production via water electrolysis. In this work, alcohols are employed to assist the hydrogen production, and the feasibility of coproducing electricity and hydrogen in the cation-exchange membrane direct alcohol fuel cells is conceptually validated. After the performance optimization, the peak power density of 114 mW cm −2 is achieved at the hydrogen generation current density of 230 mA cm −2 . Impressively, the fairly flat 24-h constant current discharge and hydrogen production plots demonstrate the good durability of the proposed hydrogen production device. Moreover, the fuel flexibility of the cation-exchange membrane direct alcohol fuel cells on methanol, ethanol, propanol, iso-propanol and ethylene glycol furthering suggests its application potential. This work proposes an effective strategy for the energy-saving green hydrogen production.
研究领域:
能源科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jiyan Li,Meichen Liu,Min Qiao,Fei Wang,An Li
Solar-driven interfacial evaporation co-generation (SDIE-CG) technology can effectively solve problems such as low latent heat utilization in the evaporation process, which provides a reliable solution to the problem of hydropower shortage in remote areas. Herein, we report a tea residue microcrystalline cellulose (TMCC) aerogel (abbreviated as TCA), in which TMCC is regenerated by dissolution through the co-solvent method, and microcrystalline cellulose is rearranged by the directional slow freezing technique to get a TCA with a directional aligned pore structure, resulting in a good mechanical and salt-resistant property. Due to the internal doping of carbon black particles, the TCA has an average ultra-high absorbance of 97.46 %. The evaporation rate of TCA is up to 3.066 kg m −2 h −1 under 3 kW m −2 illuminations. The maximum output voltage of the TCA is 44.801 mV under 2 kW m −2 illuminations through the introduction of a suitable wind-assisted hydropower generation device. In addition, the TCA can effectively purify the wastewater containing traditional Chinese medicine, and the chemical oxygen demand (COD) value in wastewater shows a significant decrease after treatment. It is worth noting that TCA can maintain structural integrity and stable evaporation performance in saltwater under extreme pH conditions (2
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ziyi Wang,Yuqian Zhang,Chengping Li,Liang Wang,Ting Bian,Shitan Yan,Kuzmin Anton,Liuting Zhang
Incorporating solar steam generation with the hydrovoltaic effect presents a promising approach to concurrently addressing water scarcity and energy challenges. However, realizing a high water evaporation rate while simultaneously maintaining substantial electrical output in a single device remains a formidable obstacle. Here, this study presents a novel hydrovoltaic and galvanic effects-coupled evaporation platform (HGEP) for dual-function applications in freshwater production and electricity generation from seawater. Coating urchin-like Mn-doped Co 3 O 4 on inclined nickel foam (NF), the system achieves a stable evaporation rate of 1.77 kg m −2 h −1 in 3.5 wt% brine under 1 kW m −2 irradiation with a 30° tilt angle. The inclined structure facilitates unidirectional ion transport by establishing a salinity gradient, effectively preventing salt deposition for up to 8 h. Moreover, integrating Zr-Al electrodes effectively combines the hydrovoltaic and galvanic effects, enabling the HGEP to deliver a stable open-circuit voltage of 1.0 V and a short-circuit current of 1.5 mA—over an order of magnitude higher than the pure hydrovoltaic effect (0.49 V, 0.15 mA)—and achieve a maximum power density of 0.8 W m −2 . This study presents an innovative solar-powered water treatment technology that simultaneously achieves water production and power generation
研究领域:
材料科学
·
能源技术
·
环境工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Guiyun Huang,Jia Liu,Hanxiao Zhang,Wei Zhang,Yong Deng,Jiulong Sha
Moisture-electric generators (MEGs), which convert moisture potential into electrical energy, provide a promising alternative for energy generation due to the widespread and abundant distribution of air humidity in the surrounding environment. However, the low and intermittent electric output of MEGs presents challenges for their direct use in practical applications. In this study, an efficient hydrogel-based MEG integrated with hydrophilicity and ion concentration gradients based on a rational combination of polyvinyl alcohol, cellulose nanofibers, phytic acid, lithium bromide, and multi-walled carbon nanotubes was developed for the first time. The assembled MEG demonstrates outstanding power generation performance, with a single unit providing an output voltage of 1.0 V and a power density of 26.5 μW cm −2 (53.0 μW cm −3 ), enabled by the synergistic effect of its double-gradient structure. Notably, an increased current (4.0 mA) and voltage (45.3 V) were achieved using parallel and series integration of MEG banks, respectively. Scalable MEGs can directly power commercial electronic devices without the need for rectifiers or capacitors. This study provides new insights into MEGs design, contributing to the future development of sustainable power sources.
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）