ELECTROANALYSIS
·
2023
·Vol. 36
·期 4
·e202300371
·
IF 3
Wenjing Liu,Sumin Xu,Jinjin Zhang,Qi Wang,Jianying Qu
In this work, manganese-based metal-organic frameworks (MnBDC) were synthesized by solvothermal method and physically mixed with pre-prepared graphene oxide (GO) to obtain GO/MnBDC, which were calcined to give MnO@C composite coated with reduced graphene oxide (rGO) marked as rGO/MnO@C. The materials were characterized by SEM, XRD, FTIR and XPS. Based on this composite, a novel sensor was constructed on a glassy carbon substrate, which exhibited good electrocatalytic activities to the redox reactions of catechol (CC) and hydroquinone (HQ), enabling simultaneous detection of both analytes. Under optimized conditions, the electrochemical sensor demonstrated a linear range of 0.50–90.00 μM for both CC and HQ detection, with respective detection limits of 0.05 μM and 0.03 μM. Moreover, the sensor exhibited excellent sensitivity, selectivity and accuracy for detecting CC and HQ simultaneous in real samples.
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2020
·Vol. 4
·期 4
·603-610
·
IF 0
Wanwei Jiang,Haiting Shi,Xijun Xu,Jiadong Shen,Zhiwei Xu,Renzong Hu
Aqueous Zn-ion battery has emerged as one of the most prospective energy storage devices due to its low cost, high safety, and eco-friendliness. However, Zn-ion batteries are bottlenecked by significant capacity fading during long-term cycling and poor performance at high current rates. Here, we report an available cooperation of multivariate manganese oxides@carbon hybrids (MnO 2 /MnO@C and MnO 2 /Mn 3 O 4 @C) via a plasma-assisted design as an attractive Zn-ion cathode. Among them, the MnO 2 /MnO@C cathode exhibits a reversible specific capacity of 165 mAh g −1 over 200 cycles at a high rate of 0.5 A g −1 , and possesses great rate performance with high capacities of 110 and 100 mAh g −1 at a high rate of 0.8 and 1 A g −1 , respectively. The good cathode performance significantly results from the facile charge transfer and ions (Zn 2+ and H + ) insertion in the manganese oxides/carbon hybrids featuring phase stability behavior in the available cooperation of multivalence and carbon conductive substrates. This work will promote the Zn-manganese dioxide system for the design of low-cost and high-performance aqueous rechargeable Zn-ion batteries.
✓ 已验证
DOI
Batteries-Basel
·
2023
·Vol. 9
·期 5
·241
·
IF 4
Da Lei,Yuyang Gao,Zhidong Hou,Lingbo Ren,Mingwei Jiang,Yunjing Cao,Yu Zhang,Jian-Gan Wang
Owing to the unique virtues of specific energy/power densities, lithium-ion capacitors (LICs) have been increasingly attracting research attention. However, the LICs are greatly restrained by the slow Li+-reaction kinetics of battery-type anodes, which is still a challenging task. In this work, we construct a superior LIC using ultrafine MnO/dual N-doped carbon (MnO/DNC) anode and activated N-doped porous carbon (ANC) derived from a homologous polypyrrole precursor. The uniform MnO ultrafine particles (~10 nm size) are well encapsulated into a dual-carbon framework, which provides fast ion/electron transportation and structural cushion for high-rate and long-durable energy storage. Accordingly, the anodic MnO/DNC achieves an impressive rate performance (179 mAh g−1@10 A g−1) and a stable 500-cycling lifespan. The as-constructed LICs could deliver a large specific energy of 172 Wh kg−1at 200 W kg−1and retain at 37 Wh kg−1even at a high specific power of 15 kW kg−1. It is believed that the design strategy of confining ultrafine conversion-type anode materials into a dual-carbon structure will expedite the development of advanced LICs.Keywords:lithium-ion capacitor;MnO;dual-carbon structure;reaction kinetics
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Peng Miao,Zhen Yu,Weixing Chen,Rui Zhou,Weifeng Zhao,Kai-Jie Chen,Jie Kong
High-performance microwave-absorbing materials (MAMs) derived from metal–organic frameworks (MOFs) have attracted considerable attention due to their tunable chemical composition and microstructure. In this contribution, a core–shell-structured Co/MnO/C nanocomplex was prepared using a CoMn-MIL MOF by a facile hydrothermal synthesis and subsequent pyrolysis process. The optimal microwave absorption (MA) property of the as-prepared Co/MnO/C nanocomplex was achieved by the regulation of the Co2+/Mn2+ molar ratio. The minimum reflection loss (RLmin) of the Co/MnO/C-31 nanocomplex was low to −55.0 dB at 16.2 GHz with a thickness of 1.49 mm, and the effective absorption bandwidth (EAB) was high to 5.95 GHz (12.05–18 GHz) at a thickness of 1.8 mm. The mixed-metal nanocomplex with the core–shell structure exhibited outstanding MA performance, corresponding to the synergetic effect of the magnetic and dielectric loss. It provides a high efficiency strategy for rendering low reflection loss and broad EAB to high-performance MAMs.
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Juan Zhang,Rui Gao,Xiaona Yang,Qianyi Ma,Haoze Zhang,Weinan Zhao,Qingli Xu,Aixi Pan,Xinyi Chen,Jian Wang,Ning Chen,Xinhou Wang,Aiping Yu,Kun Zhang
Carbon-based fibrous supercapacitors (FSSCs) are promising power sources for wearable electronics, often compounding with transition metal oxides (TMOs) to improve energy density. However, conventional methods introducing TMOs onto exterior surfaces of carbon-based fibers typically degrade electrical transport and cycle stability. Herein, nanoconfined MnO@Mn 2 O 3 heterojunctions within carbon nanotube (CNT) (MOIC) composite FSSCs stabilized by Mn─O─C bonds, exhibiting record cycle stability with 95.7% capacitance retention after 10 000 cycles and 89.4% after 50 000 cycles are reported. X-ray absorption near edge structure (XANES), X-ray diffraction, and X-ray photoelectron spectroscopy (XPS) analyses confirm MnO@Mn 2 O 3 heterostructure, which arises through a partial phase transformation from MnO to Mn 2 O 3 , as further supported by density functional theory calculations. Mn─O─C chemical bonds, as verified through XPS, extended X-ray absorption fine structure, and XANES analyses, facilitate 3D electron transport, enabling MOIC composite fiber superior electrical conductivity than CNT fiber. The nanoconfinement of Mn 2+ within CNTs, driven by capillary effects and electrostatic repulsion between protonated CNTs and Mn 2+ , preserves the clean exterior surfaces of CNTs. This configuration enables the successful wet-spinning of MOIC composite fibers with three times the tensile strength of fibers without nanoconfinement. This work opens new pathways for designing carbon/metal oxide hybridized supercapacitors for wearable energy storage applications.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Jufeng Zhang,Ting Ren,G.P. Nayaka,Peng Dong,Jianguo Duan,Xue Li,Yingjie Zhang,Ding Wang
Investigating independent active materials is inadequate to settle the technological challenges involved in the booming lithium ion battery industry. The further development of energy-storage properties with both high energy density and superior cycling lifespan are highly dependent on the overall system optimization, which highlights the study of the interface between different components in a system. Herein, a system-level strategy of engineering MnO-based anode build on the plentiful electrolytic manganese dioxide are developed via a microwave-assisted carbothermic reduction , combined with a succeeding in-situ aggregation of polydopamine (PD) onto MnO along with chemical binding with polyacrylic acid (PAA) binder. Fourier transform IR spectra , X-ray photoelectron spectroscopy spectra validate the formation of cross-linking reaction between the PD buffer and PAA binder. Benefited from the prominent structure stability which endowed by well-connected three-dimensional porous structure , as well as two steady interfaces between MnO and PD buffer and between PD buffer and PAA binder, the cross-linked MnO anode exhibit a reversible capacity of 687 mAh g −1 at 300 mA g −1 and high Coulombic efficiency of 99% over 500 cycles and impressive rate capability of 320 mAh g −1 at 3000 mA g −1 .
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2026
·
IF 3.9
Jie Wan,Shouji Huang,Xiaowu Li,Guixiang Liu,Liwen Yang,Guobao Xu
MnO is regarded as a highly promising anode material for lithium-ion batteries because of its high theoretical specific capacity and abundant resources. Nevertheless, its intrinsic low electrical conductivity and significant volume expansion during cycling lead to poor rate capability and cycling performance, hindering its practical applications. Herein, N,P-co-doped carbon/MnO composite was designed and synthesized using expired milk powder as the nitrogen and phosphorus-codoped carbon source and manganese acetate tetrahydrate as the manganese source by freeze-drying and annealing strategies. In this composite, MnO nanoparticles (average size of 60 nm) are uniformly embedded within a three-dimensional interconnected N,P-co-doped foam-like carbon framework. The 3D carbon skeleton has a reversible wrinkling deformation, effectively mitigating the volume expansion of MnO during charge/discharge cycles and preventing particle aggregation. Additionally, N-doping introduces abundant surface active sites to enhance Li+ adsorption and improves electronic conductivity for efficient charge transfer, while P-doping generates defects in the carbon matrix, accelerating the kinetics of Li+. Therefore, the synergy between highly dispersed MnO nanoparticles and N,P-co-doped carbon matrices endows exceptional electrochemical performance, including high reversible capacity of 966 mAh g–1 at 0.2 A g–1 with 190 cycles, superior rate capability of 318 mAh g–1 at 4.0 A g–1, and long cycle performance (retaining 526 mAh g–1 at 1.0 A g–1 after 600 cycles). Furthermore, Li full cell assembled with LiFePO4 as the cathode and this composite as the anode also presents outstanding cycling stability, maintaining a capacity of 111 mAh g–1 after 250 cycles at 0.1 A g–1.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Longxiang Guo,Jiazhe Li,Junjun Zhang,Hangcheng Yang,Kui Wang,Hengda Sun,Yu Chen,Hongkang Wang
Core-shelled MnO/C nanospheres were prepared via a facile template strategy. • MnO/C demonstrated superior zinc storage behavior with outstanding cycling/rate performance. • MnO/C showed surface pseudocapacitance-dominated hybrid charge-storage mechanism. Manganous oxide (MnO) is a promising high-capacity cathode for aqueous zinc-ion batteries (AZIBs), but its practical application is severely hindered by low intrinsic electronic conductivity and large volume fluctuations during cycling. Constructing yolk–shell architectures with conductive carbon matrices is an effective strategy, yet conventional templating methods usually involve sacrificial templates and multi-step procedures, limiting scalability and structural uniformity. Herein, we report a facile, template-free strategy to fabricate uniform yolk–shell MnO/C nanospheres. The synthesis involves a single-step solvothermal preparation of a Mn–glucose complex precursor, followed by controlled thermal annealing under argon. The resulting architecture features a well-defined internal void, a porous MnO/C composite shell, and a continuous three-dimensional carbon network. These structural attributes synergistically accommodate volume expansion, facilitate electron transport, and shorten ion diffusion pathways. When evaluated as a cathode for AZIBs, the yolk–shell MnO/C delivers a high reversible capacity of 290.0 mAh g −1 at 0.2 A g −1 and outstanding long-term cycling stability, retaining 191.2 mAh g −1 at 1 A g −1 and 146.5 mAh g −1 at 2 A g −1 each after 1000 cycles. Quantitative kinetic analysis reveals that the superior rate capability originates from a surface pseudocapacitance-dominated hybrid charge-storage mechanism, enabled by the high specific surface area and abundant mesoporous channels of the yolk-shell architecture. This work provides a straightforward and scalable pathway for fabricating advanced yolk–shell structured metal oxide/carbon composites for advanced energy storage.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shouji Huang,Guobao Xu,Guixiang Liu,Xiaowu Li
We report ultrasmall MnO quantum dots (approximately 2 nm) uniformly confined within N-doped carbon spheres (MnOQD/NC) through a simple strategy involving in-situ spatial confinement followed by carbonization, and demonstrate its application as long-life anodes for Na storage. The quantum-dot-sized MnO nanoparticles are intimately embedded within nitrogen-doped carbon spheres (rather than surface-loaded), forming a rationally designed confined architecture which effectively accommodates the volume expansion of MnO, prevents aggregation of quantum dots, suppresses electrode pulverization, and provides highly efficient electron/ion transport pathways. Meanwhile, the combination of quantum-scale MnO (providing larger specific surface area) and N-doped carbon (offering abundant adsorption sites) leads to pseudocapacitance-dominated sodium storage behavior. Furthermore, ex-situ TEM and HRTEM characterizations demonstrate that this composite architecture exhibits remarkable structural reversibility and exceptional cycling stability. Hence, after 500 cycles at 0.2 A g −1 , the MnOQD/NC anode delivers high reversible specific capacity of 479.8 mAh g -1 at 0.2 A g −1 , outstanding rate capability of 229.2 mAh g -1 at 15 A g −1 and long life with a high capacity of 258.4 mAh g -1 after 4100 cycles at 10 A g −1 (capacity retention of 89%). Furthermore, Na full cell also display excellent electrochemical properties. The novel work on nanostructure and a simple method offers new perspectives for synthesizing other composites consisting of N-doped carbon and oxide quantum dot anodes for sodium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Shenfei Li,Huihui Peng,Xiaoqiang An,Huachun Lan,Xuelian Yu
Nonradical oxidation via peroxymonosulfate (PMS) activation has attracted considerable attention for organic pollutant degradation, while the control and regulation of singlet oxygen ( 1 O 2 ) generation in catalytic oxidation are still challenging and the underlying mechanism remains ambiguous. In this paper, we synthesized a nitrogen-doped carbon-supported manganese-based catalyst by using ZIF-8 as a metal-organic framework (MOF) template for the in-situ loading of active components. When used for peroxymonosulfate activation, the MnO-Mn 6 N 2.58 /N-C catalyst exhibits a high Bisphenol A (BPA) degradation rate of 0.133 min -1 , exceeding PMS oxidation alone by 67 times. Mechanistic investigations reveal that the degradation process relies on the direct electron transfer from heterogeneous catalysts to PMS, contributing to efficient 1 O 2 generation for BPA degradation via a nonradical pathway. We demonstrate that Mn(II)/Mn(III) redox cycling on the catalyst surface activates PMS into superoxide (O 2 • - ), which in turn converts into 1 O 2 , thereby elucidating the underlying mechanism for high-efficiency degradation. This work provides a novel strategy to design heterogeneous Mn-based catalysts for recalcitrant organic wastewater remediation via a nonradical oxidation pathway.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Lijuan Peng,Xiaomin Peng,Zhaogen Zhu,Qianqun Xu,Kaifen Luo,Zhaotong Ni,Dingsheng Yuan
Developing the low-cost, durable, and efficient bifunctional electrocatalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) plays an important role in the commercial implementation of the Zn-air batteries. Herein, we design and synthesize the MnO and Co nanoparticles coated with N-doped carbon (MC@NC) as an excellent bifunctional oxygen electrocatalyst. It is found that the optimal MC@NC-0.3 exhibits outstanding ORR performance with a positive half-wave potential of 0.82 V and excellent OER activity with a small overpotential of 360 mV at 10 mA cm −2 . When applied in the liquid Zn-air battery, MC@NC-0.3 displays a high maximum power density of 153 mW cm −2 , a large specific capacity of 776 mAh g −1 and the excellent cycling stability with a negligible increase after 300 h. Furthermore, the fiber-shaped all-solid-state Zn-air battery also displays remarkable stability at high current density . This study offers a facile strategy to construct a high-efficient, low-cost, and durable transitional metal-based bifunctional electrode for renewable energy applications .
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shuyue Li,Dongxu Yu,Lina Liu,Shiyu Yao,Xiaoqi Wang,Xu Jin,Dong Zhang,Fei Du
Rechargeable aqueous zinc-ion batteries (AZIBs) have attracted widespread attention as a sustainable energy storage system owing to the safe aqueous electrolyte. Manganese-based materials are potential cathodes for AZIBs, whereas, the dissolution of manganese would result in the significantly decline of capacity and unsatisfied lives. Herein, an in-situ electrochemical induced artificial solid electrolyte interphase (SEI), (Zn(OH) 2 ) 3 (ZnSO 4 )(H 2 O) 5 nanoflakes, is discovered to generate and coat on the surface of MnO@C in the initial charging process which could prevent the direct contact between the electrolyte and electrode with the result of inhibiting the excessive dissolution of manganese oxides. Benefiting from the artificial SEI, MnO@C exhibits an extremely excellent cycle performance with 0.003% capacity decay per cycle over 10,000 cycles without Mn 2+ additive in electrolyte. Moreover, MnO@C is proved to demonstrate a (de)intercalation reaction mechanism after the electrochemical activation process in initial charging process. The strategy proposed in this study provides a new proposal to develop high stable manganes oxide cathodes for AZIBs.
✓ 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）