ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Yiding Jiao,Fangyan Li,Wei Mao,Hongli Chen,Wei Li,Er He,Dan Li,Lie Wang,Luhe Li,Shuo Yang,Chenyu Bai,Zhenjie Zhang,Rui Gao,Jie Song,Tingting Ye,Jiang Lu,Hao Chen,Qianming Li,Yiran Li,Jiacheng Wang,Yuanzhen Wang,Junye Ren,Ping He,Yu Deng,Peng Wang,Ye Zhang
Appropriate treatment of mass-produced degraded batteries is desired to alleviate resource waste and environmental pollution caused by direct disposal. However, current technologies, which aim to recycle high-value components from degraded batteries to refabricate new batteries, suffer from complex destruction-refabrication processes and massive energy/resource inputs. Here it is found that without disassembling the degraded battery, the lost capacity is rejuvenated to its pristine state by simply applying electrical activation at a controlled voltage. It is shown that repeated application of electrical activation regenerates 22 life cycles for zinc-ion batteries, increasing the total discharge energy by 78 times. The capacity rejuvenation by electrical activation originates from the transformation of redox-inert Zn-Mn-O by-products on the degraded cathode to redox-active Mn-O nanoribbons, which recovers diffusion kinetics of Zn 2+ /H + charge carriers. Simultaneously, the dendrites on the degraded anode are flattened to prevent short circuits while maintaining the electrolyte integrity. The electrical activation strategy is extendable to other batteries, such as lithium batteries, promising tremendous economic and environmental benefits. Besides, electrical activation rejuvenates implanted batteries to avoid the pain and hazards of replacing degraded batteries with conventional surgeries. This work presents a general and commercially viable route to treat degraded batteries.
研究领域:
材料科学
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能源技术
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xingyue Wu,Yiping Qiu,Wenrong Cai,Junyao Li,Datong Wu,Laidi Xu,Yong Kong
Melamine foam (MF) supported NiCo 2 S 4 /Ag nanowires (AgNWs) were facilely prepared and used as the compressible electrode for the asymmetric supercapacitor (ASC). AgNWs and NiCo 2 S 4 were successively decorated on the surface of MF by a two-step impregnation approach, and the resultant NiCo 2 S 4 /AgNWs/MF exhibited a high deformation-tolerance and outstanding electrochemical behaviors due to the flexible skeleton of MF, high electrical conductivity of AgNWs and high specific capacitance of NiCo 2 S 4 . More importantly, the nanosized NiCo 2 S 4 could be effectively activated by charging/discharging as the NiCo 2 S 4 nanoparticles were gradually converted into NiOOH and CoOOH nanosheets during the repeated charging/discharging cycles, resulting in significantly high capacitance retention (155 % after 2000 charging/discharging cycles). Finally, an ASC was fabricated by using NiCo 2 S 4 /AgNWs/MF as the cathode and MF supported Ti 3 C 2 T x /AgNWs (Ti 3 C 2 T x /AgNWs/MF) as the anode, which showed a high energy density of 28.8 mWh cm −3 at the power density of 754 mW cm −3 .
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
CELLULOSE
·
2021
·Vol. 28
·期 6
·3647-3662
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IF 5.044
Yang Junjie,Yao Jintong,Ma Yingying
Biological gel paper actuators (BGPAs) constitute a rising class of electroactive smart artificial muscles with the advantages of large deformation and high energy density at low cost, and they are extensively used in areas such as soft robots, aerospace applications, and biomedical engineering. In this study, a double-side casting process and evaluation methods were proposed for manufacturing electroactive BGPAs and testing their output force characteristics. Furthermore, the effect and optimization mechanism of the double-side casting temperature on the output force performance and electrically activated mechanochemical behavior of a BGPA were studied in depth under single-cycle and repeated work periods. The experimental results demonstrated that when the casting temperature was 50 °C, various hydrogel membranes of BGPAs had optimal connections, with a penetration thickness of 6 μm, which reduced the interfacial contact resistance and drastically increased the quantity of interlayer hydrated ions. Moreover, the specific capacitance of this BGPA reached a maximum at 551.34 mF/g, but its elastic modulus, internal resistance and water loss rate all reached minimum values of 5.934 MPa, 1.91 Ω and 0.176%, respectively. Hence, the ideal values of the working life and output force density were similarly obtained for the BGPA, which were 891 s and 16.249 mN/g, respectively. In general, this optimized high-performance BGPA holds great value for the development and validation of natural smart polymers and engineering solutions. Graphic abstract
研究领域:
材料科学
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生物医学工程
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智能材料
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Guohua Qi,Xingkang Diao,Yu Tian,Dan Sun,Yongdong Jin
Exosomal miRNA expression derived from tumor cells provides a valuable and promising noninvasive modality for the early diagnosis and assessment of the efficacy of cancer treatment. However, accurate detection and identification of miRNA within exosomes have been challenging due to its low abundance and the complexity and tedious extraction with large sample volumes in the separation process. Here, we developed an electrically activated nanoplatform for rapid and sensitive detection and identification of exosome miRNA, through triggering miRNA release by opening exosomes that were captured on the electrode surface using a slightly applied electric field (50 mV), and simultaneously detected them with surface-enhanced Raman spectroscopy (SERS) in situ. The method possessed superior specificity and sensitivity for exosomal miRNA detection, with a low detection concentration of 0.5 nM. The SERS sensor chips also showed a superior sensing performance of exosomal miRNA in complex body fluids such as urine and blood. We found that exosomal miRNA contents derived from tumor cells were significantly higher than those in normal cells, and importantly, the concentrations of exosomes secreted from three different cell lines were distinctly augmented after mild electrical stimulation (ES) treatment. Furthermore, the miRNA expression within exosomes was upregulated after the ES treatment of cells. The developed approach and SERS detection platform for exosomal miRNA are promising for noninvasive and precise screening, classification, and monitoring of cancer.
研究领域:
癌症生物学
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纳米技术
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生物医学工程
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分析化学
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分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science Bulletin
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2024
·
IF 18.8
Gang Wang,Jingrui Li,Shumin Sun,Yuqi Yang,Zhihui Han,Zifan Pei,Liang Cheng
Excess intracellular H 2 S induces destructive mitochondrial toxicity, while overload of Zn 2+ results in cell pyroptosis and potentiates the tumor immunogenicity for immunotherapy. However, the precise delivery of both therapeutics remains a great challenge. Herein, an electrically activable ZnS nanochip for the controlled release of H 2 S and Zn 2+ was developed for enhanced gas-ionic-immunotherapy (GIIT). Under an electric field, a locality with particularly high concentrations of H 2 S and Zn 2+ was established by the voltage-controlled degradation of the ZnS nanoparticles (NPs). Consequently, the ZnS nanochip-mediated gas-ionic therapy (GIT) resulted in mitochondrial membrane potential depolarization, energy generation inhibition, and oxidative stress imbalance in tumor cells. Interestingly, the cyclic guanosine monophosphate-adenosine monophosphate synthase-stimulator of interferon genes (cGAS-STING) signaling pathway was activated due to the mitochondrial destruction. Moreover, the released Zn 2+ resulted in the increase of the intracellular Zn levels and cell pyroptosis, which enhanced the immunogenicity via the release of damage-associated molecular patterns (DAMPs). In vitro and in vivo studies revealed that the ZnS nanochip-based GIT effectively eliminated the tumors under an electric field and mobilized the cytotoxic T lymphocytes for immunotherapy. The combination with αCTLA-4 further promoted the adaptive immune response and inhibited tumor metastasis and long-term tumor recurrence. This work presented an electrically activable ZnS nanochip for combined immunotherapy, which might inspire the development of electric stimulation therapy.
研究领域:
癌症治疗
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纳米技术
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免疫学
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细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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