Electrochemical properties of hybrid typed electrocatalyst using Pt/carbon molecular sieve synthesized by zeolite template and Pt carbon black

Fluorinated carbon (CFx) is a new material with good lubricity and resistance to high temperature and corrosion. Meanwhile, CFx has excellent electrochemical properties when used as the cathode of the lithium primary batteries. Here, a series of carbon molecular sieve (CMS) is fluorinated via gas-phase fluorination. The CMS treated at 1550 °C has better electrochemical properties after fluorination. The fluorinated products named CMSF deliver specific capacity reaching 796 mAh g-1, associated with discharge potentials exceeding 3.1 V (vs. Li/Li+). The discharge voltage of CMSF is about 0.4 V ~ 0.6 V higher than that of fluorinated graphite (GF), and its energy density is about 8% ~ 13% higher than that of GF. The CMSF with the better electrochemical performances than GF as well as its low cost and scalable product demonstrated its great potential practicability in the field of lithium primary batteries.

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Use of thermally modified carbon black and carbon molecular sieve adsorbents in sampling air contaminants

Pure and Applied Chemistry ◽

10.1351/pac198961112047 ◽

1989 ◽

Vol 61 (11) ◽

pp. 2047-2050 ◽

Cited By ~ 13

Author(s):

W. R. Betz ◽

W. R. Supina

Keyword(s):

Carbon Black ◽

Molecular Sieve ◽

Carbon Molecular Sieve ◽

Air Contaminants

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Hyperaging Tuning of a Carbon Molecular‐Sieve Hollow Fiber Membrane with Extraordinary Gas‐Separation Performance and Stability

Angewandte Chemie International Edition ◽

10.1002/anie.201904913 ◽

2019 ◽

Vol 58 (34) ◽

pp. 11700-11703 ◽

Cited By ~ 9

Author(s):

Wulin Qiu ◽

Justin Vaughn ◽

Gongping Liu ◽

Liren Xu ◽

Mark Brayden ◽

...

Keyword(s):

Gas Separation ◽

Hollow Fiber ◽

Molecular Sieve ◽

Hollow Fiber Membrane ◽

Separation Performance ◽

Fiber Membrane ◽

Carbon Molecular Sieve ◽

Gas Separation Performance

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A MEMS µ-Preconcentrator Employing a Carbon Molecular Sieve Membrane for Highly Volatile Organic Compound Sampling

Chemosensors ◽

10.3390/chemosensors9050104 ◽

2021 ◽

Vol 9 (5) ◽

pp. 104

Author(s):

Hung-Yang Kuo ◽

Wei-Riu Cheng ◽

Tzu-Heng Wu ◽

Horn-Jiunn Sheen ◽

Chih-Chia Wang ◽

...

Keyword(s):

Organic Compound ◽

Organic Compounds ◽

Volatile Organic Compound ◽

Molecular Sieve ◽

Amplification Factor ◽

Microfluidic Channel ◽

Carbon Molecular Sieve ◽

Volatile Organic ◽

Chromatographic Peaks ◽

Gaseous Toluene

This paper presents the synthesis and evaluation of a carbon molecular sieve membrane (CMSM) grown inside a MEMS-fabricated μ-preconcentrator for sampling highly volatile organic compounds. An array of µ-pillars measuring 100 µm in diameter and 250 µm in height were fabricated inside a microfluidic channel to increase the attaching surface for the CMSM. The surface area of the CMSM was measured as high as 899 m2/g. A GC peak amplification factor >2 × 104 was demonstrated with gaseous ethyl acetate. Up to 1.4 L of gaseous ethanol at the 100 ppb level could be concentrated without exceeding the capacity of this microchip device. Sharp desorption chromatographic peaks (<3.5 s) were obtained while using this device directly as a GC injector. Less volatile compounds such as gaseous toluene, m-xylene, and mesitylene appeared to be adsorbed strongly on CMSM, showing a memory effect. Sampling parameters such as sample volatilities, sampling capacities, and compound residual issues were empirically determined and discussed.

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