Energy Storage Materials
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2020
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IF 16.28
Jianlong Cong,Xiu Shen,Zhipeng Wen,Xin Wang,Longqing Peng,Jing Zeng,Jinbao Zhao
Although aqueous zinc metal batteries (AZMBs) have attractive advantages such as high safety, low cost and eco-friendliness, severe dendrites formation and side reactions of zinc metal anodes cause a serious challenge for commercial applications. Herein, a polyanionic hydrogel electrolyte, poly 2-acrylamido-2-methyl-1-propane sulfonate zinc (PAMPSZn) is firstly designed and synthesized by ion exchange and free-radical polymerization. The PAMPSZn hydrogel electrolyte owns fixed polyanionic chain and restricted Zn 2+ transport channels, which can effectively alleviate the side reactions and prevent the formation of Zn dendrites simultaneously. Consequently, the anode-friendly electrolyte not only enables ultra-stable Zn plating/stripping over 4500 h at 1.0 mA cm −2 , but also achieves high preferred orientation deposition during the procedure of repeated plating/stripping. It delivers high reversibility with high initial coulombic efficiency (87.5%) and average coulombic efficiency (99.3%) in Zn/Cu cells at 0.5 mA cm −2 . Zn/V 2 O 5 cells with the developed electrolyte also possess outstanding cycle stability with capacity retention of 80.2% after 400 cycles at 0.5 A g −1 . The PAMPSZn hydrogel electrolyte with unique fixed polyanionic chain and restricted Zn 2+ transport channels demonstrates an effective strategy to solve both dendrites formation and side reactions in AZMBs, providing a new opportunity for high performance AZMBs.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2019
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IF 6.309
Jinyuan Wang,Jian Wu,Yuqing Luo,Yong Zhang,Sharon Guo,Sanshui Pan
Peroxide curing can provide rubber products with good thermal aging resistance, low compression set and light color. But butyl rubber (IIR) and bromobutyl rubber (BIIR) will incur severe main chain degradation when using a peroxide as a curing agent . The presence of 2,2,6,6-tetramethylpiperidinyl- N -oxyl (TEMPO) and in situ formed zinc disorbate (ZDS) in dicumyl peroxide cured BIIR system can inhibit the degradation of BIIR without compromising the curing extent of BIIR vulcanizates. ZDS is grafted on BIIR, while TEMPO functions as a free radical scavenger and nitroxide mediator for the grafting reaction. The in situ formation and grafting reaction of ZDS in BIIR are characterized by FTIR, XRD and NMR spectroscopy. In the presence of TEMPO and ZDS, BIIR does not suffer degradation but exhibits a continuous increase in torque and crosslink density with time during the post-cure period. The presence of TEMPO could effectively improve the thermal stability and aging resistance of BIIR vulcanizates. The study provides an effective route to avoid the degradation and promote the crosslinking of BIIR that can easily incur β -scission when reacting with peroxides.
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高影响因子
Journal of Energy Chemistry
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2016
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IF 2.322
Zhipeng Xie,Qi Su,Anhong Shi,Bin Yang,Baixiong Liu,Jianchai Chen,Xiaochun Zhou,Dingjian Cai,Liang Yang
A green low-cost redox flow battery using Zn/Zn 2+ redox couple in HAc/NaAc medium and Fe 2+ /Fe 3+ redox couple in H 2 SO 4 medium was first proposed and investigated for potential stationary energy storage applications . The presence of HAc/NaAc in the negative electrolyte can keep the pH between 2.0 and 6.0 even when a large amount of H + ions move into negative electrolyte from positive electrolyte through ion exchange membrane . In the pH range of 2.0–6.0, the chemical reaction of Zn species with H + species is very insignificant; furthermore, the electroreduction of H + ion on the negative electrode is significantly suppressed at this pH range. The zinc-ferrum redox flow battery (Zn/Fe RFB) operated within a voltage window of 0.5–2.0 V with a nearly 90% utilization ratio, and its energy efficiency is around 71.1% at room temperature. These results show that Zn/Fe RFB is a promising option as a stationary energy storage equipment.
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高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
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2025
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IF 2.4
Ke Yang,Sisi Cheng,Shijia Li,Kun Zhu,Ziqin Yao
The influencing factors of ZIF-8 synthesis were systematically investigated by the green synthesis method and the samples were also compared with ZIF-8 synthesized in other ways, and an optimal synthesis route was found by exploring the synthesis conditions. On this basis, the synthesis mechanism of ZIF-8 was analyzed. The research results show that the key influencing factors in the reaction process are the amount of NaOH and the pH value of the system. Different amounts of NaOH will produce different intermediates, and these intermediates further affect the pH value of the entire reaction system. The pH value of the system plays a decisive role in the deprotonation process of the ligand in the reaction, and this process is the key to whether the ZIF-8 structure can be formed. It is worth mentioning that the ZIF - 8 synthesized in this study demonstrates varying removal performances for different dyes under different conditions. Under specific conditions, it exhibits the maximum removal rate for Rhodamine B (RhB), reaching 99.97 %. This excellent removal performance is closely associated with the pore - structure characteristics of the synthesized material, which fully indicates that the ZIF - 8 synthesized through the green route has certain application potential and promising application prospects in related fields.
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高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
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IF 14.7
Huang Zhongliang,Hu Shengnan,Sun Mingzi,Xu Yong,Liu Shangheng,Ren Renjie,Zhuang Lin,Chan Ting-Shan,Hu Zhiwei,Ding Tianyi,Zhou Jing,Liu Liangbin,Wang Mingmin,Huang Yu-Cheng,Tian Na,Bu Lingzheng,Huang Bolong,Huang Xiaoqing
Bimetallic PtRu are promising electrocatalysts for hydrogen oxidation reaction in anion exchange membrane fuel cell, where the activity and stability are still unsatisfying. Here, PtRu nanowires were implanted with a series of oxophilic metal atoms (named as i-M-PR), significantly enhancing alkaline hydrogen oxidation reaction (HOR) activity and stability. With the dual doping of In and Zn atoms, the i-ZnIn-PR/C shows mass activity of 10.2 A mg Pt+Ru −1 at 50 mV, largely surpassing that of commercial Pt/C (0.27 A mg Pt −1 ) and PtRu/C (1.24 A mg Pt+Ru −1 ). More importantly, the peak power density and specific power density are as high as 1.84 W cm −2 and 18.4 W mg Pt+Ru −1 with a low loading (0.1 mg cm −2 ) anion exchange membrane fuel cell. Advanced experimental characterizations and theoretical calculations collectively suggest that dual doping with In and Zn atoms optimizes the binding strengths of intermediates and promotes CO oxidation, enhancing the HOR performances. This work deepens the understanding of developing novel alloy catalysts, which will attract immediate interest in materials, chemistry, energy and beyond.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Junyan Tang,Dehua Wang,Wen Qin,Siyu Fang,Ting Xu,Jiming Huang,Mi Tang,Zhengbang Wang
Nanofiller/polymer composite electrolytes have been regarded as promising candidates for all-solid-state lithium-metal batteries. However, well-dispersion of nanofillers in polymer composite electrolytes is still a great challenge. Herein, we report an in-situ solvent-free processable method to the MOF/polymer composite electrolyte with highly dispersed and defected MOF nanoparticles. The high MOF dispersion without aggregation not only suggests the uniform composite structure with high utilization of MOF nanofillers but also induces the formation of continuous and uniform Li + transport paths. The defected MOF structure is favorable to adsorb anions and promote Li + transportation. As a result, Such MOF/polymer electrolyte demonstrates enhanced electrochemical performance and the assembled LiFePO 4 /Li full cells also exhibit both the excellent rate capability and cycling stability. This study proposes a simplified and efficient methodology for the highly dispersed MOF/polymer composite electrolytes for high performance solid-state batteries.
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高影响因子
危险品化学品经营许可证（带存储）