What materials are used in Tesla batteries?

[VonEvan]

Tesla models currently use NCA (Nickel Cobalt Aluminum) type batteries. Here is an introduction to Tesla batteries: 1. The common ratio of nickel, cobalt, and aluminum in NCA batteries is 8:1.5:0.5. The aluminum content is very low, making it close to a binary material. Aluminum (a transition metal) replaces manganese, modifying lithium nickel cobalt manganese oxide through ion doping and surface coating. Ion doping enhances material stability and improves cycle performance. However, during production, because aluminum is an amphoteric metal that is difficult to precipitate, the manufacturing process of NCA materials presents challenges. Nickel-cobalt-aluminum batteries require high manufacturing precision and are costly, but aluminum helps improve the chemical stability of battery cycles. 2. Within the ternary system, nickel content can be increased to achieve higher battery energy density. However, the nickel-cobalt-aluminum crystal structure is less stable than nickel-cobalt-manganese, making it prone to collapse at high temperatures, leading to thermal runaway. Additionally, excessively high pH levels can cause cell swelling, posing risks. Overall, Tesla's ternary lithium batteries are currently popular, with most pure electric vehicles using them. Lithium batteries are lighter and have higher energy density, making them highly suitable for pure electric vehicles.

[DeMorgan]

Tesla batteries are mainly divided into two types with significant differences in materials. The Long Range version uses nickel-cobalt-aluminum (NCA) ternary lithium batteries, which have high energy density and excellent range performance. The Standard and basic models now predominantly use lithium iron phosphate (LFP) batteries, which are more cost-effective and safer. The former's cathode material is a nickel-cobalt-aluminum mixture, enabling the battery to store more energy; the latter's cathode is lithium iron phosphate, which is less prone to overheating but has inferior low-temperature performance. Both types use graphite for the anode, and the electrolyte consists of organic solvents with lithium salts. The battery casing is typically made of aluminum alloy, while copper is predominantly used for heat dissipation plates. Musk recently mentioned that the 4680 battery incorporates a silicon anode, significantly boosting storage capacity, though mass production hasn't been fully rolled out yet. When choosing a car, you can actually select the battery type based on your typical driving conditions – friends in northern regions should note that LFP batteries experience more noticeable performance drops in winter.

[Gabriela]

I specifically looked up the information, and Tesla's battery is somewhat like an 'energy bun': the wrapper is an aluminum alloy shell, and the filling comes in two recipes. Long-range vehicles are equipped with nickel-cobalt-aluminum batteries, which contain precious metals, making them more expensive, but they can sustain energy for a long time. The standard version uses lithium iron phosphate filling, which is cheaper, more durable, and resilient, though it tends to 'harden' in cold weather, affecting performance. Regardless of the type, the 'seasonings' inside the battery are carefully selected: graphite acts as a skeleton to hold lithium ions, while special electrolytes, like sauce, coat the materials. Since last year, some models have added silicon powder to the anode, equivalent to mixing konjac into the filling to absorb more energy. Nowadays, recycling plants particularly favor the aluminum shells and copper sheets from these batteries, and the lithium salts inside can be purified again. In my opinion, this battery technology is far more advanced than the lead-acid batteries from a few years ago, though repairs are more complicated—replacing a battery pack requires dismantling the entire chassis.

[LylaRose]

Tesla batteries mainly fall into two categories: NCA (Nickel Cobalt Aluminum) for the cathode in ternary lithium batteries, which offers higher energy density; and LFP (Lithium Iron Phosphate) with iron-lithium compound cathodes, known for better safety and stability. The casing typically uses aluminum alloy, with copper foil serving as the current collector inside. The battery separator employs polyolefin material for insulation, while the electrolyte contains lithium hexafluorophosphate to conduct ions. The new 4680 battery incorporates silicon into the graphite anode to boost capacity, though this increases expansion risks. Currently, entry-level models predominantly switch to LFP batteries, which cost about 30% less than NCA variants.