JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Yue Zhao,Huilian Hao,Tianliang Song,Xu Wang,Changwang Li,Wenyao Li
By combining the large power density of supercapacitors with the high energy density of ion batteries , a novel zinc-ion hybrid supercapacitor (ZHSC) is proposed and considered a promising candidate. But there are still challenges in the selection and application of reliable cathode materials . Herein, we used a mature and safe one-step hydrothermal method to synthesize N/P co-doped graphene (NPG), which exhibited a unique three-dimensional structure and a large specific surface area, showing great advantages as cathode to assemble Zn//NPG ZHSC with zinc foil. In the 1 M ZnSO 4 solution, the ZHSC shows superior electrochemical performance, which presents an excellent specific capacitance of 210.2 F g −1 under a wide working voltage of 1.8 V, and it achieves both a maximum energy density of 94.6 Wh kg −1 and a large power density of 4500 W kg −1 . More importantly, the capacitance retention rate remains 82% and a coulomb efficiency of ∼100% is achieved after 15,000 cycles. Overall, the results of this study highlight the efficient synthesis and excellent performance of NPG cathode materials, and also promote the rapid development and great application of high-performance Zn-ion hybrid capacitors.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Pengfei Zhou,Songbo Chen,Haoyun Bai,Chunfa Liu,Jinxian Feng,Di Liu,Lulu Qiao,Shuangpeng Wang,Hui Pan
Electrochemical water splitting is the primary method to produce green hydrogen, which is considered an efficient alternative to fossil fuels for achieving carbon neutrality. For meeting the increasing market demand for green hydrogen, high-efficiency, low-cost, and large-scale electrocatalysts are crucial. In this study, we report a simple spontaneous corrosion and cyclic voltammetry (CV) activation method to fabricate Zn-incorporated NiFe layered double hydroxide (LDH) on commercial NiFe foam, which shows excellent oxygen evolution reaction (OER) performance. The electrocatalyst achieves an overpotential of 565 mV and outstanding stability of up to 112 h at 400 mA cm −2 . The active layer for OER is shown to be β-NiFeOOH according to the results of in-situ Raman. Our findings suggest that the NiFe foam treated by simple spontaneous corrosion has promising industrial applications as a highly efficient OER catalyst.
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Journal of Magnesium and Alloys
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2023
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IF 17.6
Pingli Jiang,Depeng Li,Ruiqing Hou,Hong Yang,Junjie Yang,Shijie Zhu,Liguo Wang,Shaokang Guan
Alloying is one of the effective approaches to boost the discharge property of magnesium (Mg) anodes for primary Mg-air batteries and recently micro-alloying is highly recommended at the aim of developing advanced primary Mg system. In this study, micro-alloyed extruded Mg0.5Zn0.2Ge (in wt.%) alloy is evaluated as an anode candidate for primary Mg-air batteries in both half-cell and Mg-air full cell configurations, in comparison with commercially accepted Mg anodes, typified by as-cast HP Mg and extruded AZ31 alloy. The corrosion behavior at open circuit potential (OCP) condition of the three materials is also compared through electrochemical tests. Mg0.5Zn0.2Ge alloy displays the most negative OCP value and the highest corrosion resistance at OCP. During discharge, Mg0.5Zn0.2Ge anode exhibits low wasteful-discharge rate and homogeneous dissolution that gives rise to the absence of “chunk effect”. Consequently, the anodic efficiency and specific capacity of Mg0.5Zn0.2Ge anode are superior to those of HP Mg and AZ31 anodes, e.g. 57.3% and 1257 mAh g −1 at 1 mA cm −2 . Additionally, Mg-air battery based on Mg0.5Zn0.2Ge anode offers higher cell voltage and specific energy than those assembled with HP Mg and AZ31 anodes, which can be further optimized by addition of electrolyte additives. Therefore, micro-alloyed Mg0.5Zn0.2Ge alloy can serve as a promising candidate for anode material of primary Mg-air batteries.
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MOLECULES
·
2023
·Vol. 28
·期 10
·4177
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IF 4.6
Jinxian Huang,Zhao Fu,Chuan-Fu Sun,Wenzhuo Deng
Aqueous zinc-ion batteries (AZIBs) show enormous potential as a large-scale energy storage technique. However, the growth of Zn dendrites and serious side reactions occurring at the Zn anode hinder the practical application of AZIBs. For the first time, we reported a fluorine-containing surfactant, i.e., potassium perfluoro-1-butanesulfonate (PPFBS), as an additive to the 2 M ZnSO4electrolyte. Benefitting from its hydrophilic sulfonate anion and hydrophobic long fluorocarbon chain, PPFBS can promote the uniform distribution of Zn2+flux at the anode/electrolyte interface, allowing the Zn/Zn cell to cycle for 2200 h. Furthermore, PPFBS could inhibit side reactions due to the existence of the perfluorobutyl sulfonate (C4F9SO3−) adsorption layer and the presence of C4F9SO3−in the solvation structure of Zn2+. The former can reduce the amount of H2O molecules and SO42−in contact with the Zn anode and C4F9SO3−entering the Zn2+-solvation structure by replacing SO42−. The Zn/Cu cell exhibits a superior average CE of 99.47% over 500 cycles. When coupled with the V2O5cathode, the full cell shows impressive cycle stability. This work provides a simple, effective, and economical solution to the common issues of the Zn anode.Keywords:Zn anode;Zn dendrite;side reaction;electrolyte additive;potassium perfluoro-1-butanesulfonate
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JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Yanjie Duan,Zhixiong Huang,Xiangbin Dong,Jingyu Ren,Lin Lin,Shuhong Wu,Runping Jia,Xiaowei Xu
Transition metal oxalates have attracted people's attention owing to their low cost, low lithium insertion potential and high theoretical reversible capacities. Disappointingly, high irreversible capacity thanks to the formation of SEI as well as the consumption and exfoliation of active materials during the process of cycling severely restrict its application of it. In this work, a comprehensive evaluation of Co, Ni, Cu and Zn doped manganese oxalate was made. All samples are synthesized via facile and time-saving microwave hydrothermal method . It is intriguing that merely 30 min is required to accomplish the entire process and all samples possess fine electrochemical performance. As far as the four bimetallic oxalates, the resulting Mn 0·5 Ni 0·5 C 2 O 4 exhibits the optimum performance (746.2 mA h g −1 after 100 cycles at 0.2 A g −1 and 546.7 mA h g −1 at 1 A g −1 after 400 cycles), which can be attributed to one-dimensional rod-like morphology of Mn 0·5 Ni 0·5 C 2 O 4 as well as the synergistic and catalytic effect of Mn and Ni, resulting in faster electrode kinetics . Mn 0.5 Ni 0.5 C 2 O 4 displays incalculable potential and can be applied in the highly reversible lithium-ion batteries.
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CARBON
·
2021
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IF 9.594
Yu Ma,Ding Chen,Dongdong Zhang,Hao Yu,Yapeng Zheng,Weijun Li,Lin Wang,Qiao Liu,Weiyou Yang
Freestanding air cathode catalyst with exceptional catalytic bifunctions for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is highly desirable for exploring rechargeable Zn–air batteries (ZABs) with low cost and high reliability. Here, a facile and scalable approach is demonstrated to prepare efficient and robust freestanding cathode catalyst that consists of dispersed Fe 3 C nanoparticles , rich Fe-N x /N-C species and carbon fibers networks with large specific surface area, which is based on one-pot in-situ coupling of Fe and N induced active sites within bacterial cellulose-derived carbon fibers networks. Its bifunctional activity parameter (Δ E ) for ORR and OER is 0.79 V, superior to those of single Fe- or N- modulated counterparts, and comparable to the state-of-the-art Pt/C + RuO 2 catalyst (0.79 V). This material can be directly used as freestanding and binder-free catalyst layer , and as-assembled ZABs exhibit a larger peak power density (173 mW cm −2 ), higher specific capacity (717 mA h g −1 , 10 mA cm −2 ) and better cycle stability (negligible activity decay after 165 h charge/discharge cycles) than those of Pt/C + RuO 2 -based devices, representing their potential applications in advanced energy conversion systems.
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CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Haihua Wu,Jiahao Wu,Yudan Li,Wei Li,Juanjuan Zhai,Qike Jiang,Xin Xu,Yunfang Gao
The specific structure of metal atoms including coordination environment and dispersibility, together with carbon support architecture in metal-nitrogen-carbon (M−N−C) materials are of great importance for their capabilities to catalyze oxygen reduction reaction (ORR). Herein, we report a novel strategy to achieve highly exposed and atomically isolated Co-N 4 active sites within porous carbon polyhedron with bumpy exterior by pyrolysis of predesigned Zn-modified metal–organic frameworks (MOFs) together with tripolycyanmide, during which Zn is evaporated away at high temperature of 900 °C and leaves free vacancies for N to stabilize Co atoms. The bumpy exterior dramatically enlarges its specific surface area and improves the number of active sites. The local structure of single Co atoms coordinated with N is confirmed by combing spherical aberration correction electron microscopy and X-ray absorption fine structure analyses. Remarkably, the obtained Co-N 4 single sites exhibit a high ORR activity with a half-wave potential of 0.861 V that is superior to commercial Pt/C (0.819 V), as well as excellent performance and stability in Zn-air batteries with a peak power density of 260 mW cm −2 . Our work will endow the opportunities to propagate this approach to develop various single-metal-atom materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yueming Yan,Qian Zhu,Lei Cao,Feng Gu,Shiji Liu,Yuhao Luo,Feng Liu,Shufen Wang,Lanlan Fan,Shixian Xiong
Rational construction of efficient carbon-supported rare earth cerium nanoclusters as oxygen reduction reaction (ORR) is of great significance to promote the practical application of zinc-air batteries (ZABs). Herein, N doped conductive carbon black anchored CeO 2 nanoclusters (CeO 2 Clusters/NC) for the ORR is reported. The volatile cerium species vaporized by CeO 2 nanoclusters at high temperatures are captured by nitrogen-rich carbon carriers to form highly dispersed Ce-N x active sites. Benefiting from the coupling effect between oxygen vacancies-enriched CeO 2 nanoclusters and highly dispersed Ce-N x sites, the prepared 2CeO 2 Clusters/NC catalyst possesses an ORR half-wave potential of 0.88 V, superior electrochemical stability, and better methanol tolerance compared to commercial Pt/C catalysts. Moreover, the 2CeO 2 Clusters/NC involved liquid ZABs show excellent energy efficiency, superior stability, and a high energy density of 982 Wh kg −1 at 10 mA cm −2 .
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Quanzhang Sun,Ming Gong,Ji Wang,Lifeng Chen,Wenlong Li,Yuezhou Wei
ABSRACT To extract lutetium (Lu) from LiCl-KCl fused salt, the electrode reaction mechanisms of Lu on W and liquid Zn electrodes were systematically investigated using a series of electrochemical methods such as cycle voltammetry (CV), square wave voltammetry (SWV), reverse chronopotentiometry (RCP), etc. The diffusion coefficient and diffusion activation energy of Lu(III) in LiCl-KCl fused salt were measured by CV. The results of CV, SWV and open circuit chronopotentiometry (OCP) confirmed that seven Lu-Zn intermetallic compounds were formed when Lu was deposited on Zn film electrode. Kinetic data of Lu(III)/Lu on W and liquid Zn electrodes, i.e., exchange current density, charge transfer resistance and reaction activation energy, were determined and compared by linear polarization (LP) at 773-848 K. Furthermore, the thermodynamic date such as equilibrium potential and formation Gibbs free energy of Lu-Zn alloys were also calculated and analyzed according to the OCP. The results demonstrate that the liquid Zn electrode is conducive to extract Lu from LiCl-KCl fused salt. Thus, constant potential electrolysis (CPE) was conducted at -1.58 V for 9 h on liquid Zn cathode to extract Lu from fused salt. The electrolytic product was composed of Zn and LuZn12 phases checked by XRD and SEM-EDS. The extraction rate of Lu is reached up to 98.37% based on the concentration change of Lu(III) in fused salt, which confirmed the feasibility to extract Lu employing liquid Zn electrode.
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ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Linghong Zhang,Yi Liao,Meng Ye,Wenqin Cai,Meng Xiao,Changyan Hu,Benhe Zhong,Fang Wan,Xiaodong Guo
Large quantities of spent lithium-ion batteries (LIBs) will inevitably be generated in the near future because of their wide application in many fields. It will cause not only resource waste but also environmental pollution if these spent batteries are not properly handled. Until now, the recycling of spent lithium manganate batteries has centered on high-valuable elements such as lithium; however, manganese element and current collector Al foil have not yet attracted wide attention. In this work, aluminum-doped manganese dioxide was synthesized by overall recycling cathode active materials and current collector Al foil from a spent lithium manganate battery. Employing such aluminum-doped manganese dioxide as the cathode material of aqueous Zn batteries, it displays better electrochemical performance than manganese dioxide prepared by only recycling the cathode active materials. The overall recycling not only simplifies the recycling process but also realizes high-value recycling of spent lithium manganate batteries. We offer new tactics for overall recycling of cathodes from spent LIBs and designing high-performance manganese dioxide cathodes for aqueous Zn batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Kunpeng Gao,Chengbin Wang,Kaicai Fan,Zumin Wang,Bin Li,Tianrong Zhan,Xiaoyan Wang,Maximov Maxim,Sevara Djasurovna Kholikova,Mariya Ivanovna Markevich,Donaev Sardor,B.E. Umirzakov,Lei Wang,Lingbo Zong
The curvature strain and boron doping synergistically regulated Fe single-atom catalyst was fabricated. • Fe-NB-MCS delivers superior ORR performance with a large half-wave potential of 0.90 V. • Geometric strain and B doping synergistically downshift the Fe d-band center, enhancing oxygen intermediate desorption. • Fe-NB-MCS-based aqueous Zn-air battery achieves 1.51 V OCV and operates stably over 1200 h at 5 mA cm-2. • Quasi-solid-state Zn-air battery with Fe-NB-MCS maintains stable operation for over 120 h with high voltage efficiency. Using an ion adsorption-pyrolysis strategy, an iron single-atom catalyst synergistically regulated by curvature strain and B doping was successfully synthesized. Within the ordered mesopores architecture, Fe N 4 active sites are spatially confined, and the curved geometry and B doping, together with the hierarchical pore structure, establishes a distinctive catalytic microenvironment. Density functional theory calculations reveal that curvature strain and B doping downshift the d-band center and weaken the binding strength of oxygen intermediates. Notably, this synergistic effect can reduce the energy barrier of the rate-determining OH* desorption, thereby accelerating oxygen reduction reaction (ORR) kinetics. As a result, Fe-NB-MCS achieves an outstanding ORR half-wave potential of 0.90 V in alkaline media and enables exceptional durability in Zn-air batteries (ZABs), with over 1200 h of stable operation at 5 mA cm −2 , including in flexible quasi-solid-state configurations under mechanical deformation. This work establishes a robust electronic structure engineering strategy that synergizes heteroatom doping and geometric strain, for single-atom catalysts optimization, offering a generalizable design paradigm to overcome the intrinsic kinetic bottlenecks of ORR. Download: Download high-res image (413KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Zecheng Cheng,Lunjin Li,Tao Jia,Fengting Li
Efficient recovery of precious metals from secondary resources is of great economic and environmental significance in modern society. Herein, an efficient adsorbent ZIF-8-MTD was designed using 1,3,4-thiadiazole (MTD)-modified zinc-based metal-organic framework (MOF) for efficient recovery of gold (Au)(III) from wastewater. It was found that the ZIF-8-MTD adsorbent has excellent adsorption performance for Au(III), with a maximum adsorption capacity of 1604.53 mg·g −1 at room temperature (15 °C), which is superior to the traditional adsorbent. Particularly, the ZIF-8-MTD adsorbent still maintained a high saturation adsorption capacity of 1088.8 mg·g − 1 at a low Au(III) concentration (10 ppm). The fitting results of adsorption isotherm and kinetic adsorption model indicated that the adsorption process was consistent with Langmuir and pseudo-second-order adsorption models, implying that chemisorption was involved in the adsorption process. Moreover, the results of adsorption selectivity , desorption and adsorption experiments confirmed good adsorption selectivity and recyclability. Combining pH effect experiments, infrared spectroscopy (IR), and X-ray photoelectron spectroscopy (XPS) characterizations, we proposed an electrostatic adsorption mechanism in which the coordination interactions between the -SH functional groups in the framework and Au(III) lead them to be adsorbed to the ZIF − 8-MTD surface and partially reduce it to Au(I). More importantly, the outstanding adsorption performance, high selectivity and strong stability make it have great potential for practical application.
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危险品化学品经营许可证（带存储）