COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Ping Shen,Yuanyuan Hu,Shanguo Ji,Hao Luo,Cuiping Zhai,Kai Yang
Hydrogel electrolytes are an attractive class of conductive materials for flexible energy storage devices given their reassuring flexibility and stable electrochemical performance . However, it still remains a challenge to assemble the smart battery with mechanical stability and self-healing property when suffering from inevitable physical damages. Here, a novel Zn 2+ -based polyacrylamide/halloysite nanotubes (PAAm/HNTs) nanocomposite hydrogel electrolyte is designed and prepared through rigid HNTs doped into the chemical cross-linked PAAm network. The PAAm/HNTs hydrogel with tensile performance, self-healing property and extended Zn 2+ transport channels was used as hydrogel electrolyte in Zn/MnO 2 batteries which possess an initial capacity of 347 mA h g 1 at a current density of 0.2 A g –1 with good cycle stability. This work offers an effective design method to improve strength , self-healing and fatigue resistance of nanocomposite hydrogel electrolytes which would provide alterative view for the construct of hydrogel electrolytes with desirable properties.
研究领域:
材料科学
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电化学
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能量存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zihan Qi,Murong Xi,Zhenjie Liu,Rui Sheng,Wei Wang,Tianlong Wu,Yudai Huang
The Zn/electrolyte interface stability is related to HER, passivation, dendrites, corrosion and Zn 2+ deposition orientation. Reducing the occupation of H 2 O dipoles in the inner layer of electrical double layer (EDL) is conducive to the inhibition of interfacial side reactions and directing the deposition of Zn 2+ along the (002) crystalline surface, which are beneficial to the reduction of dendrites and the improvement of plating/stripping reversibility. A mechanism is elucidated by which Acetyl-L-carnitine Hydrochloride (A-L-CN) reconfigures the EDL structure and guides the selective deposition of Zn 2+ in this paper. Theoretical calculations show that A-L-CN can cover the high-energy active sites on the Zn (101) crystal plane and control the specific crystal orientation of the deposits along the (002) crystal plane to produce faceted epitaxial growth. The electrochemical test results show that the Zn anode has excellent plating/stripping reversibility as well as good cumulative capacity (10 mA cm −2 , 1 mA h cm −2 , ACE of 99.80 %, CPC of 7,753 mA h cm −2 ). The assembled Zn 2+ hybrid supercapacitor (ZHS) and Zn//PANI full cell show excellent performance (ZHS up to 60,000 cycles; the capacity retention ratio of Zn//PANI full cell is 76.7 % after 1,000 cycles). The work offers the possibility of achieving stabilized Zn/electrolyte interface performance.
研究领域:
电化学
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材料科学
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储能技术
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Zhiyan Yan,Chenrui Liu,Yun Liu,Xiaoqian Tan,Xinyue Li,Yan Shi,Chunlian Ding
Cr(VI) contaminated water usually contains other contaminants like engineered nanomaterials (ENMs). During the process of microbial treatment , the inevitable interaction of Cr(VI), ENMs, and microorganisms probably determines the efficiency of Cr(VI) biotransformation , however, the corresponding information remains elusive. This study investigated the interaction of ZnO nanoparticles (NPs), Cr(VI), and Pannonibacter phragmitetu s BB (hereafter BB), which changed the process of microbial Cr(VI) reduction. ZnO NPs inhibited Cr(VI) reduction, but had no effect on bacterial viability. In particular, Cr(VI) induced BB to produce organic acids and to drive Zn 2+ dissolution from ZnO NPs inside and outside of cells. The dissolved Zn 2+ not only promoted Cr(VI) reduction to Cr(V)/Cr(IV) by strengthening sugar metabolism and inducing increase in NAD(P)H production, but also hindered Cr(V)/Cr(IV) transformation to Cr(III) through down-regulating Cr(VI) reductase genes. A novel bacterial driven ROS scavenging mechanism leading to the inhibition of Cr(VI) reduction was elucidated. Specifically, the accumulated Cr(VI) and Cr(V)/Cr(IV) formed a redox dynamic equilibrium, which triggered the disproportionation of superoxide radicals mimicking superoxide dismutase through the flip-flop of Cr(VI) and Cr(V)/Cr(IV) in bacterial cells. This study provided a realistic insight into design the applicability of biological remediation technology for Cr(VI) contaminant and evaluating environmental risks of ENMs.
研究领域:
环境科学
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微生物学
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纳米技术
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生物修复
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
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2023
·Vol. 14
·期 1
·1-11
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IF 16.6
Li Wenda,Xu Hengyue,Zhang Hongyi,Wei Facai,Huang Lingyan,Ke Shanzhe,Fu Jianwei,Jing Chengbin,Cheng Jiangong,Liu Shaohua
Stable cathodes with multiple redox-active centres affording a high energy density, fast redox kinetics and a long life are continuous pursuits for aqueous zinc-organic batteries. Here, we achieve a high-performance zinc-organic battery by tuning the electron delocalization within a designed fully conjugated two-dimensional hydrogen-bonded organic framework as a cathode material. Notably, the intermolecular hydrogen bonds endow this framework with a transverse two-dimensional extended stacking network and structural stability, whereas the multiple C = O and C = N electroactive centres cooperatively trigger multielectron redox chemistry with super delocalization, thereby sharply boosting the redox potential, intrinsic electronic conductivity and redox kinetics. Further mechanistic investigations reveal that the fully conjugated molecular configuration enables reversible Zn 2+ /H + synergistic storage accompanied by 10-electron transfer. Benefitting from the above synergistic effects, the elaborately tailored organic cathode delivers a reversible capacity of 498.6 mAh g −1 at 0.2 A g −1 , good cyclability and a high energy density (355 Wh kg −1 ).
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
Small
·
2023
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IF 13.3
Xiaodan Wei,Honglin Huang,Junhan Guo,Ningxi Li,Qingzhi Li,Tian Zhao,Geng Yang,Lulu Cai,Hong Yang,Chunhui Wu,Yiyao Liu
Reprogramming the immunologically “cold” environment of solid tumors is currently becoming the mainstream strategy to elicit powerful and systemic anticancer immunity. Here, a facile and biomimetic nano-immunnoactivator ( CuS/Z@M 4T1 ) is detailed by engineering a Zn 2+ -bonded zeolitic imidazolate framework-8 (ZIF-8) with CuS nanodots (NDs) and cancer cell membrane for amplified near-infrared-II (NIR-II) photothermal immunotherapy via Zn 2+ metabolic modulation. Taking advantage of the NIR-II photothermal effect of CuS NDs and the acidic responsiveness of ZIF-8, CuS/Z@M 4T1 rapidly causes intracellular Zn 2+ pool overload and disturbs the metabolic flux of 4T1 cells, which effectively hamper the production of heat shock proteins and relieve the resistance of photothermal therapy (PTT). Thus, amplified immunogenic cell death is evoked and initiates the immune cascade both in vivo and in vitro as demonstrated by dendritic cells maturation and T-cell infiltration. Further combination with antiprogrammed death 1 (aPD-1) achieves escalated antitumor efficacy which eliminates the primary, distant tumor and avidly inhibits lung metastasis due to cooperation of enhanced photothermal stimulation and empowerment of cytotoxic T lymphocytes by aPD-1. Collectively, this work provides the first report of using the intrinsic modulation property of meta-organometallic ZIF-8 for enhanced cancer photoimmunotherapy together with aPD-1, thereby inspiring a novel combined paradigm of ion-rich nanomaterials for cancer treatment.
研究领域:
纳米技术
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癌症免疫治疗
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生物医学工程
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材料科学
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药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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