Ternary lithium batteries (or ternary lithium-ion batteries) refer to lithium-ion cells that utilise lithium nickel cobalt manganese oxide (NCM) or lithium nickel cobalt aluminium oxide (NCA) as cathode materials, graphite as the anode, and lithium salts primarily consisting of lithium hexafluorophosphate as the electrolyte. As a key branch of the lithium-ion battery family, the ternary battery derives its name from the three metallic elements—nickel, cobalt, and manganese (or aluminium)—used in its cathode. Renowned for their high energy density and superior low-temperature performance, these batteries are widely utilised in electric vehicles (EVs), consumer electronics, and energy storage systems, with automotive applications serving as their core domain.
Ternary lithium battery cathode chemistry is primarily divided into two technical pathways. Lithium nickel cobalt manganese oxide (NCM) is currently the dominant route in the market; based on the stoichiometric ratio of nickel, cobalt, and manganese, it is classified into formulations such as NCM111 (also known as NCM333), NCM523, NCM622, and NCM811, where the suffix denotes the ratio of metals (e.g., NCM811 contains 80% nickel). Lithium nickel cobalt aluminium oxide (NCA) substitutes manganese with aluminium, delivering higher overall energy density, though with relatively lower thermal stability and more stringent manufacturing requirements.
Within ternary chemistry, each metal plays a distinct role: nickel is the primary electrochemically active component that boosts energy density; cobalt partially participates in the electrochemical reaction, mainly ensuring structural stability whilst enhancing electrical conductivity and rate capability; manganese (or aluminium) remains electrochemically inactive, providing structural integrity and thermal stability whilst reducing material costs. All three elements are essential, and any variation in composition directly impacts overall cell performance.
Ternary lithium batteries operate on the reversible migration of lithium ions between the cathode and anode. The cell primarily comprises the cathode, separator, electrolyte, anode, and battery casing. During charging, lithium atoms at the cathode lose electrons and are oxidised into lithium ions, which travel through the electrolyte and separator to intercalate into the anode's microporous structure; during discharging, the reverse occurs, with lithium ions deintercalating from the anode and returning to the cathode via the electrolyte. The separator, a microporous polymer membrane, allows lithium ions to pass through while insulating against electron flow, thereby preventing short circuits caused by direct contact between the electrodes.
The most significant advantage of ternary lithium batteries is their high energy density. Mass-produced ternary cells currently achieve a volumetric energy density exceeding 600 Wh/L and a gravimetric energy density of 200 to 300 Wh/kg—some 40% to 90% higher than lithium iron phosphate (LFP) cells. Higher energy density translates to greater energy storage within the same packaging footprint or weight, giving vehicles equipped with ternary batteries a distinct driving range edge; for instance, the Tesla Model S Plaid achieves a CLTC range of over 700 km courtesy of its high-nickel ternary battery pack.
In terms of low-temperature performance, ternary lithium batteries also excel, retaining over 80% of their operational capacity at -10°C with significantly lower degradation in cold climates compared to LFP counterparts. Furthermore, ternary cells operate at a nominal voltage platform of 3.7V compared to 3.2V for LFP, facilitating higher charging efficiency.
Compromised thermal safety remains the most prominent drawback of ternary lithium chemistry. Due to higher chemical reactivity, managing and mitigating thermal runaway risks poses a greater challenge. Empirical testing indicates that high-capacity ternary cells struggle to pass stringent safety tests such as nail penetration and overcharging. Notably, thermal runaway in ternary batteries accounts for up to 70% of fire incidents involving new energy vehicles.
Shorter cycle life is another limiting factor. The layered structure of nickel-cobalt-manganese cathode materials is prone to structural degradation over time, accelerating capacity loss. The theoretical service life of a ternary lithium battery is roughly 800 charge cycles, representing a moderate figure among commercial rechargeable batteries and lagging significantly behind the 2,000+ cycles offered by LFP.
Higher production costs also constrain widespread adoption. The cathode relies heavily on cobalt and nickel, which together make up more than 40% of the raw material cost. In 2024, the average cost of ternary batteries stood at roughly RM500 to RM600 per kWh, noticeably higher than the RM350 to RM450 per kWh recorded for LFP cells.
Ternary lithium batteries long commanded the EV traction battery market, commanding a 65% market share in 2019. In recent years, however, LFP batteries have rapidly gained ground on the back of superior cost-efficiency and safety credentials. In 2025, domestic cumulative installed capacity for ternary batteries stood at 144.1 GWh (accounting for 18.7% of total vehicle installations, up just 3.7% year-on-year), whereas LFP installed capacity surged to 625.3 GWh (representing 81.2% of the total, up 52.9% YoY). Consequently, ternary battery market share has contracted from 48.1% in 2021 to 18.7% in 2025.
At present, ternary lithium batteries are increasingly relegated to the premium segment, serving high-end models priced above RM300,000 where maximum driving range and high performance are paramount. Conversely, LFP chemistry maintains a commanding dominance across the mass and mid-market tiers.
To address the thermal stability challenges of ternary chemistry, semi-solid-state battery technology is seen as a pivotal breakthrough. By incorporating non-flammable, non-corrosive solid electrolytes, semi-solid-state cells can elevate the thermal runaway threshold beyond 350°C and slash fire risks by 90%. The industry widely regards 2026 as the inaugural year for mass-market deployment of hybrid solid-liquid cells.
Concurrently, ternary materials are transitioning towards high-nickel, low-cobalt, and cobalt-free formulations. High-nickel ternary chemistry is considered the core bridging technology in the shift from liquid-electrolyte to all-solid-state batteries. From a sustainability standpoint, ternary packs offer higher end-of-life recycling value than LFP units due to their rich content of valuable metals like nickel, cobalt, and lithium. Over the medium-to-long term, ternary and LFP batteries will continue to coexist in a diversified multi-chemistry landscape, each catering to distinct vehicle segments and operational demands.
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