Sarytogan Graphite Limited’s Post

Sarytogan Graphite Limited (ASX:SGA) managing director Sean Gregory joins Jonathan Jackson in the Proactive studio to discuss the exceptional endurance demonstrated in its lithium-ion batteries using Sarytogan Uncoated Spherical Purified Graphite (USPG). The coin-cell batteries have undergone more than 140 charge-discharge cycles, retaining 97.3% capacity after 100 cycles. This suggests the potential for up to 1,000 cycles before reaching the 80% capacity threshold. Initial tests on Coated Spherical Purified Graphite (CSPG) batteries will be reported shortly. These results are crucial inputs for the pre-feasibility study, scheduled for completion in Q3 2024. Sarytogan’s graphite anodes benefit from highly crystalline graphite, enhancing lithium-ion intercalation. Watch at #Proactive #ProactiveInvestors #Graphite #GraphiteMining #BatteryMetals #LithiumIonBatteries #CriticalMinerals #CSPG https://lnkd.in/ef5-kcVz

I'm excited to share our research article on a novel method for selective lithium (Li) extraction from a pyrolyzed lithium-ion battery (LIBs) black mass (BM) using a caustic (NaOH) leaching process. In this study, we investigated the efficiency of NaOH leaching and its strong selectivity for lithium. We also explored different lithium recovery methods, including evaporative crystallization, homogeneous crystallization with Na2CO3, and heterogeneous precipitation with CO2 injection. Our findings show that the highest purity Li2CO3 was achieved through CO2 injection. This research advances efforts to enhance the sustainability of lithium-ion battery recycling and offers a promising pathway for more efficient lithium recovery from spent LIBs. I want to express my gratitude to Sulalit Bandyopadhyay and Erik Prasetyo for their valuable contributions to this work. A special thanks to Jens-Petter Andreassen for the insightful discussions. Particle Engineering Centre Department of Chemical Engineering - NTNU Albatross Project H2020 #Sustainability #BatteryRecycling #LithiumRecovery #Research #Crystallization #Leaching https://lnkd.in/d2xdTPYq

Nitrate Catalytic #Reduction over Bimetallic Catalysts: #Catalyst Optimization by A. Sofia G. G. Santos et al. C 2020, 6(4), 78; https://lnkd.in/dmuim_3m Current number of article views/citations: 3561/14 Abstract The catalytic removal of nitrate (NO3−) in water using hydrogen as a reducing agent was studied using palladium-copper bimetallic catalysts in different supports. Commercial carbon nanotubes (CNTs), used as received and with different mechanical (CNT (BM 2h)) and chemical modifications (CNT (BM 4h)-N), titanium dioxide (TiO2) and composite materials (TiO2-CNT) were considered as main supports for the metallic phase. Different metal loadings were studied to synthesize an optimized catalyst with high NO3− conversion rate and considerable selectivity for N2 formation. Among all the studied support materials, the milled carbon nanotubes (sample CNT (BM 2h) was the support that showed the most promising results using 1%Pd-1%Cu as metallic phases. The most active catalysts were 2.5%Pd-2.5%Cu and 5%Pd-2.5%Cu supported on CNT (BM 2h), achieving total conversion after a 120 min reaction with N2 selectivity values of 62% and 60%, respectively. Reutilization experiments allowed us to conclude that these catalysts were stable during several reactions, in terms of NO3− conversion rate. However, the consecutive reuse of the catalyst leads to major changes concerning NH4+ selectivity values. Keywords: #catalytic #reduction; nitrate removal; bimetallic catalysts; #carbon #nanotubes; titanium dioxide

Here is a great article out of the Max Planck Institute for Chemical Energy Conversion: https://lnkd.in/gQ_MpZsK The authors describe the many challenges associated with utilizing ammonia as a storage mechanism for hydrogen fuel, especially when it comes to utilizing a catalyst to break the ammonia down into nitrogen and hydrogen. As a part of their study, the authors utilize SilcoTek Corporation's coatings in two locations: 1. They describe coating all metal surfaces that could possibly come in contact with the ammonia with #Silconert2000 (also known as #Sulfinert). The reason they do this is describe in the paper: "...to prevent any adsorption and corrosion of the steel." 2. They then turned to the catalyst reactor design. They looked at over 200 previous publications regarding reactor design for ammonia purposes and they found that the vast majority of reactors are quartz due to its resistance to unwanted catalytic break down of ammonia (see Figure 5 in the publication), but they also tested #Silcolloy on stainless to see if it could do the same. As you can see, it performed just as well as the quartz material... 0% ammonia conversion after 4 different cycles. It will be interesting to see where the hydrogen market goes, and even more interesting to see where we can play a role and help scientists perform better analysis and better production of the hydrogen fuel.

Biological Grade Graphene Oxide Water Dispersion Parameter Value Lateral size <1 µm Number of layers Single layer Manganese content 68 ppm Concentration 0.3 mg/ml https://lnkd.in/giPharTQ

Seeing as we'll soon be capturing an absolutely massive amount of CO2 it's great to see research and solutions that are looking to actually utilize it. Yesterday Northwestern University released a study that uses molybdenum carbide to convert CO2 into CO with 100% selectivity. The CO can then be used in chemical manufacturing, iron and steel production, methanol production and more. CO2 utilization is essential for the long term success of carbon capture to reduce the reliance on government incentives and carbon credits. #CCUS #decarbonization #utilization #carboncapture #carbonutilization #researchanddevelopment #energytransition #subsurfaceinnovation #carbonstorage #decarbonize #carbon #CO2 #CO #manufacturing #methanol #iron #steel #chemical

Two Kinds of Lithium-ion Batteries: Series2 Differences between LIFEPO4 and LI-ion Batteries #LiFePO4 (Lithium Iron Phosphate) Batteries LiFePO4 batteries are a subtype of lithium-ion batteries that utilize unique chemistry to provide advantages over related lithium technologies. They're becoming increasingly common in off-grid and backup power solutions like the EcoFlow Power Kits. LFPs get their name from the chemical composition of the cathode, which consists of lithium iron phosphate (LiFePO4). The anode is typically carbon; the electrolyte is a lithium salt in an organic solvent. The chemistry of LiFePO4 provides enhanced safety features compared to lithium-ion. The presence of iron, phosphorous, and oxygen atoms in the cathode creates strong covalent bonds. The result is that the battery is more stable and less prone to thermal runaway and overheating issues. Crucially, LiFePO4 batteries do not use nickel or cobalt — two metals in dwindling supply and often questionably sourced. #Lithium-ion Batteries Lithium-ion batteries comprise a variety of chemical compositions, including lithium iron phosphate (LiFePO4), lithium manganese oxide (LMO), and lithium cobalt oxide (LiCoO2). These batteries all have three essential components: a cathode, an anode, and an electrolyte. The electrolyte for these batteries is lithium salt, whereas the anode is carbon. The cathode is where the chemistries differ—they consist of one of the lithium metal oxides that give them their respective names. The charging and discharging processes are the same for all of these. As the lithium ions move from the cathode to the anode, the electrons migrate in the opposite direction. This movement creates an electrical current. See more information on my next posts -How Do They Compare? #Wirentech #Lithiumionbattery #Lifepo4battery

🔋 An excellent overview of the geographical distribution of #EVBattery and #MaterialSupplyChains, published in #Nature. 🔎 The study examines the relationship between electric vehicle battery chemistry and supply chain disruption vulnerability for four critical minerals: #lithium, #cobalt, #nickel, and #manganese. It compares the #nickelmanganesecobalt (#NMC) and #lithiumironphosphate (#LFP) cathode chemistries by mapping the supply chains, calculating a vulnerability index, and using network flow optimization to bound uncertainties. Find details in this open access publication: https://lnkd.in/eR_4jg8Y

Oxide vs. Metal: Defining the Key Differences and Challenges in Critical Metals Production In the critical metals industry, the difference between oxides and metals is fundamental to understanding how raw materials are transformed into the building blocks of modern technology. Oxides are compounds formed when metals chemically bond with oxygen. In rare earth refining, elements like Neodymium (Nd) and Praseodymium (Pr) are first extracted as oxides. These oxides are stable, easier to store, and used in various industrial applications like catalysts and ceramics. However, oxides in their raw form are not suitable for high-performance applications such as the creation of permanent magnets. Metals, in contrast, are the pure elemental forms obtained by removing the oxygen from oxides. This transformation process, often done through molten salt electrolysis, reduces the oxide into its metallic state. Metals like Neodymium and Praseodymium are essential for producing the powerful permanent magnets found in electric vehicles, wind turbines, and other advanced technologies. However, moving from oxide to metal is far from simple. The process faces key challenges: - Energy Demands: Metal production from oxides is energy-intensive, requiring significant power inputs to drive the reduction process. - Purity Requirements: To achieve the performance required for advanced applications, metals must be extremely pure. Even minor impurities can degrade the efficiency of products like electric motors and turbines. - High-Temperature Processes: The temperatures required for metal reduction introduce additional complexities in handling and system design. Despite these challenges, the ability to produce high-quality metals from oxides is critical to meeting the growing demand for clean energy technologies and sustainable industrial solutions. #CriticalMetals #CleanTech #SustainabilityInnovation #EnergyTransition #ElectricVehicles #Renewables #GreenTechnology #SustainableMaterials #CriticalMinerals #BatteryMetals #RareEarthElements #ResourceManagement #CircularEconomy

Is Cobalt in Li-Rich Layered Oxides for Li-Ion Batteries Necessary? This is the question we address in our most recent manuscript from #HIU. Cobalt is considered an essential element for layered cathode active materials supporting enhanced lithium-ion conductivity and structural stability. However, our comparative investigation on lithium-rich layered oxides (LRLOs) with different Co content (Li1.2Ni0.2-x/2Mn0.6-x/2CoxO2, x = 0, 0.04, and 0.08) show that, although the presence of Co grants structural stability to LRLOs, superior long-term cycling stability is achieved with the Co-free LRLO, which retains 88.1% of the initial specific capacity (vs. 75.9% of Li1.2Ni0.16Mn0.56Co0.08O2) after 300 galvanostatic cycles at 250 mA g-1 (1 C). Such an enhanced performance of Co-free LRLO is obtained by reducing the Mn-related redox at discharge, which contributes to the large degree of polarization and low energy efficiency. Full-cells configured with the optimized LRLO as cathode and graphite anode delivers an energy density of 464 Wh kg-1 at C/10, and 74.4 % and 94.3 % of retention in discharge specific capacity and average voltage at the 1000th cycle, demonstrating the applicability of Co-free LRLO for sustainable LIBs. https://lnkd.in/d_rR6Agk