Porous carbon matrix-encapsulated MnO in situ derived from metal-organic frameworks as advanced anode materials for Li-ion capacitors

نویسندگان

چکیده

Conversion-type anode materials hold great potential for Li+ storage applications owing to their high specific capacity, while large volume expansion and poor electrical conductivity limit rate cycling performances. Herein, a bimetal ZnMn-based metal-organic framework (ZnMn-MOF) is engineered in situ conversion of MnO-encapsulated porous carbon (MnO/PC) composite. The templating activation effects coordinated Zn endow the converted PC matrix with highly structure. This enhances compatibility MnO particles, resulting full encapsulation particles matrix. More significantly, provides enough void space buffer change, which fully wraps without crack or fracture during repeated cycling. As result, MnO/PC shows charge capability, extraordinary performance, long-term stability at same time. Thus exhibits delithiation capacities 768 mA h g?1 0.1 A 487 0.7 g?1, combined an unattenuated performance after 500 cycles 0.3 g?1. demonstrates well-matched capacitive activated electrode Li-ion capacitor (LIC) cell. LIC energy 153.6 W kg?1 210 kg?1, 71.8 power 63.0 kW kg?1.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Novel Porous Iron Molybdate Catalysts for Synthesis of Dimethoxymethane from Methanol: Metal Organic Frameworks as Precursors

As a novel performance, methanol gas conversion to dimethoxymethane (DMM) in one-step based on Fe-Mo-O (iron molybdate mixed oxides) catalysts with high surface area fabricated by metal organic frameworks (MOFs) precursors was improved. For this approach, at first, Fe(III) precursors (iron (III) 1,3,5-benzenetricarboxylate (MIL-100 (Fe) and iron terephthalate (MOF-...

متن کامل

Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries

Porous MnO/C microspheres have been successfully fabricated by a fast co-precipitation method in a T-shaped microchannel reactor. The structures, compositions, and electrochemical performances of the obtained MnO/C microspheres are characterized by X-ray diffraction, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller analysis, ...

متن کامل

MOF-derived ultrafine MnO nanocrystals embedded in a porous carbon matrix as high-performance anodes for lithium-ion batteries.

Although MnO has been demonstrated to be a promising anode material for lithium-ion batteries (LIBs) in terms of its high theoretical capacity (755 mA h g(-1)), comparatively low voltage hysteresis (<0.8 V), low cost, and environmental benignity, the application of MnO as a practical electrode material is still hindered by many obstacles, including poor cycling stability and huge volume expansi...

متن کامل

Water adsorption in porous metal-organic frameworks and related materials.

Water adsorption in porous materials is important for many applications such as dehumidification, thermal batteries, and delivery of drinking water in remote areas. In this study, we have identified three criteria for achieving high performing porous materials for water adsorption. These criteria deal with condensation pressure of water in the pores, uptake capacity, and recyclability and water...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Science China. Materials

سال: 2021

ISSN: ['2095-8226', '2199-4501']

DOI: https://doi.org/10.1007/s40843-021-1727-3