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chem 5 seeds

Chem 5 seeds

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Journal of Materials Chemistry A

Pre-planted nucleation seeds for rechargeable metallic lithium anodes†

a Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing, China
E-mail: [email protected], [email protected]

Abstract

Metallic lithium is one of the most favorable anode materials for next-generation energy storage systems owing to its high theoretical capacity, low density and lowest negative electrochemical potential. Despite these attractive advantages, problems induced by uneven Li deposition and volume expansion have hindered the practical application of Li-metal anodes. Among numerous efforts to stabilize metallic lithium anodes, regulating lithium deposition at the nucleation stage is challenging. Herein, we propose a strategy of pre-planting nucleation seeds to inhibit the uneven dendrite growth of metallic lithium. The nucleation and growth of lithium dendrites can be efficiently regulated by adequate heterogeneous nucleation seeds while the lamellar structure can accommodate the volume change to some extent. Benefiting from these two aspects, the Li–Cu hybrid exhibits superior electrochemical performance in terms of lower over-potential, superior cycle stability with a flatter voltage plateau and prolonged lifespan, and a high specific capacity of 2023 mA h g −1 . On this basis, electrochemical tests on full-cells with LiFePO4 as the cathode also confirm the effectiveness of the Li–Cu hybrid anode which shows highly stable cycling performance and excellent capacity retention.

Dead Chem Head Feminised Seeds – 5

Dead Chem Head is a super yielder that you won’t believe. To create this strain Connoisseur Chem (Chem D cut x Chemdog bx2 Reservoir seeds) was pollinated by reversed (S1) Casey Jones pollen. As well as great yields Dead Chem Head also produces a great, rich taste.

Flowering time indoors is 8 – 10 weeks. Several different phenotypes are in the mic but they all have one thing in common – huge, cash-crop yields. This quality can be enhanced by multiple topping stages during vegetative growth. WARNING: this is a really stinky strain therefore efficient carbon filters are an absolute MUST!

Five D:C-friedo-oleanane triterpenes from the seeds of Trichosanthes kirilowii Maxim. and their anti-inflammatory effects

Five triterpenes with a D:C-friedo-oleanane skeleton, D:C-friedo-oleana-7,9(11)-diene-3 beta,29-diol (3-epikarounidiol), 7-oxo-D:C-friedo-olean-8-en-3 beta-ol (7-oxoisomultiflorenol), 7-oxo-8 beta-D:C-friedo-olean-9(11)-ene-3 alpha,29-diol, D:C-friedo-olean-8-ene-3 alpha,29-diol (3-epibryonolol), and D:C-friedo-olean-8-ene-3 beta,29-diol (bryonolol), the first four of which are new naturally occurring compounds, were isolated from the seeds of Trichosanthes kirilowii Maxim. The structures were determined by spectral and chemical methods. 3-Epikarounidiol, 7-oxoisomultiflorenol, and 3-epibryonolol showed marked inhibitory activity against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear inflammation in mice. The 50% inhibitory dose of these triterpenes for TPA-induced inflammation (1 microgram) was 0.2-0.6 mg/ear.