CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Changpeng Xian,Ruilin He,Qianwei Chen,Qiulin Li,Yandong Ma,Shu-juan Bao,Wei Sun,Hao Chen,Maowen Xu
Aqueous rechargeable zinc-manganese batteries (AZMBs) are strong candidates for the next generation of energy storage technologies. However, poor cycling stability has greatly limited the commercialization process of AZMBs. The irreversible dissolution and low utilization of manganese-based cathodes impact cycling stability. Therefore, this work proposes a cathode for electrolytic zinc-manganese battery, where cobalt and nitrogen co-doped porous carbon with catalytic and adsorptive properties is grown on carbon nanotube films (CoNC-CFs). Through a synergistic approach of ion adsorption and catalytic conversion, it significantly enhances the reversible conversion efficiency of Mn 2+ /MnO 2 , leading to long-term cycling stability for AZMBs. This strategy utilizes the catalytic effect of cobalt to promote the uniform deposition of Mn 2+ during the charging process and ensures the efficient dissolution of the deposited material during discharge, thus achieving over 1300 reversible cycles at 1 mA cm −2 in a near-neutral sulfate electrolyte. This method offers new perspectives for the further development and application of AZMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers of Materials Science
·
2018
·Vol. 12
·期 2
·118-128
·
IF 1.478
Wang Qian,Meng Guihua,Wu Jianning,Wang Yixi,Liu Zhiyong,Guo Xuhong
We fabricated pH and light dual-responsive adsorption materials which could induce the transition of surface wettability between hydrophobicity and hydrophilicity by using ATRP. The structure and morphology of adsorption materials were confirmed by ATR-FTIR, XPS, TGA and SEM. It showed that the modified cellulose (CE)-based foam was hydrophobic, which can adsorb a range of oils and organic solvents in water under pH = 7.0 or visible light irradiation ( λ > 500 nm). Meanwhile, the wettability of robust CE-based foam can convert hydrophobicity into hydrophilicity and underwater oleophobicity under pH = 3.0 or UV irradiation ( λ = 365 nm), giving rise to release oils and organic solvents. Most important of all, the adsorption and desorption processes of the modified CE-based foam could be switched by external stimuli. Furthermore, the modified CE-based foam was not damaged and still retained original performance after reversible cycle repeated for many times with variation of surface wettability. In short, it indicates that CE-based foam materials with switchable surface wettability are new responsive absorbent materials and have owned potential application in the treatment of oil recovery.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Tingting Wang,Xiaotong Fan,Ruyu Li,Jiayun Xu,Junqiu Liu
Natural enzymes are expected to be used in biomedical fields due to their extensive antibacterial activity, good biocompatibility and resistance to bacteria. Herein, we constructed a multi-enzyme protein assembly with ultrathin single protein sheet structure by the strategy of interface assembly and developed an efficient and intelligent antibacterial system based on the combination of multi-enzymes. The multi-enzyme protein assembly not only displayed extremely high antibacterial activity, but can also be turned on and off through the denaturant induced folding and unfolding of natural enzymes, and this process can be realized for several reversible cycles. Such an intelligent antibacterial material provides the possibility for its application in biomedical and other fields.
研究领域:
生物医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xiaolong Li,Limin Guo,Jing Li,Erkang Wang,Tianfu Liu,Guoxiong Wang,Ke Sun,Chuntai Liu,Zhangquan Peng
As one of the greatest inventions in the history of electrochemistry, the lithium-ion battery (LIB) has radically transformed human beings’ daily life by powering portable electronics and electric vehicles. When we look back upon the long and arduous effort devoted to the development of the LIB technology, it is found that the birth of LIBs could have been even earlier if reversible cycling of the graphite electrode had been realized in the propylene carbonate (PC) electrolyte, one of the few dominating electrolytes extensively used in nonaqueous electrochemistry long before the concept of LIBs. In this work, a functional electrolyte additive, that is, ethyl isothiocyanate, has been identified to enable the reversible Li+ ion intercalation/de-intercalation into/out of the graphite electrode in PC electrolyte by forming a high-quality solid electrolyte interphase (SEI) on the graphite electrode. A wide range of advanced in situ and ex situ spectroscopic characterization techniques coupled with theoretical calculations have been employed to understand the SEI formation mechanism. The results reported here rejuvenate the promise of PC as the primary electrolyte solvent for LIBs by artificially rectifying the interfacial electrochemical processes.
研究领域:
电化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Chi Chen,Yangyuanchen Liu,Ximin He,Hua Li,Yujie Chen,Ying Wei,Yusen Zhao,Yanfei Ma,Zhen Chen,Xu Zheng,Hezhou Liu
In the field of bionic soft robots and microrobots, artificial muscle materials have exhibited unique potential for cutting-edge applications. However, current mainstream thermal-responsive artificial muscles based on semicrystalline polymers (SCPs), despite their excellent physical properties, suffer from the limitation of environmental stimuli in practice, while their photodriven counterparts adopting liquid crystal elastomers (LCEs) lack ductility. Herein, a novel multifunctional programmable artificial muscle with a unique patch-sewing structure formed by π–π stacking between azobenzene groups was designed, which combined the advantages of SCPs and LCEs. The nanocomposite demonstrated a unique combination between artificial muscle performance (46.5 times the energy density and 26.6 times the power density of human skeletal muscles) and programmability (274.84% strain and 100% shape-memory recovery rate within 1 s). Meanwhile, coupling the photoisomerization of azobenzene and the photothermal conversion of gold nanorods, the cycle of deformation triggered by ultraviolet light and restoring by infrared light could be accomplished rapidly within 30 s. A COMSOL Multiphysics model was established and the corresponding finite element analysis verified the photoactuation and captured the general principle of light initiation in elastomers. These demonstrate that the multifunctional programmable elastomer is promising for artificial muscle applications, especially for photoinduced actuation.
研究领域:
仿生学
·
软体机器人
·
微机器人
·
材料科学
·
纳米技术
·
光响应材料
✓ 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）