Views: 0 Author: Site Editor Publish Time: 2026-01-22 Origin: Site
Solid-state batteries are widely regarded as the next major step forward in lithium battery technology. As semi-solid and all-solid-state solutions move closer to commercialization, leading Chinese manufacturers are making tangible progress across different cell formats—including pouch cells, prismatic cells, and large cylindrical cells.
For battery traders, system integrators, and OEM buyers, understanding which formats are advancing fastest—and why— is critical. This article reviews the latest developments from EVE Energy, Gotion High-Tech, and CALB, with a particular focus on pouch cell solid-state and semi-solid technologies.
EVE Energy has taken a pragmatic and pouch-cell-focused approach to solid-state battery development.
In April 2024, the company disclosed a 50Ah semi-solid pouch cell achieving an energy density of 330 Wh/kg with a cycle life exceeding 2,000 cycles. This level of performance indicates that semi-solid pouch cells are no longer just laboratory concepts, but are approaching real commercial viability.
By October 2025, EVE announced plans to upgrade existing production lines to enable scaled manufacturing of semi-solid batteries—highlighting a cost-controlled pathway rather than a complete greenfield build.
On the all-solid-state front, EVE’s “Longquan II” 10Ah pouch cell rolled off its Chengdu production line in September 2025. The cell combines:
High-nickel NCM cathode
Halide-coated interfaces
Sulfide solid electrolyte
Silicon–carbon anode
This architecture delivers 300 Wh/kg gravimetric energy density and 700 Wh/L volumetric density, targeting humanoid robots, low-altitude aircraft, and other high-end applications.
EVE has stated a 2026 target for process-level breakthroughs and aims to launch 400 Wh/kg all-solid-state pouch cells by 2028—a timeline closely watched by global pouch cell buyers.
Gotion High-Tech is advancing both prismatic and pouch solid-state platforms, positioning itself for broader market coverage.
At its Global Technology Conference in May 2025, Gotion unveiled the “G-Yuan” quasi-solid prismatic aluminum cell, exceeding 300 Wh/kg and 720 Wh/L. The design incorporates a closed-pore solid electrolyte structure and a low-expansion silicon-based anode. Notably, the cell passed a 3 mm nail penetration test and has completed over 20,000 km of vehicle road testing, indicating near-production readiness. A 12 GWh production line is already planned.
In parallel, Gotion introduced its “Jinshi” all-solid-state pouch cell in 2024, reaching 350 Wh/kg while passing multiple high-level safety tests. By 2025, Gotion completed a 0.2 GWh pilot line and initiated planning for a 2 GWh mass-production facility. The system-level packing efficiency reportedly exceeds 80%, an important metric for real-world battery pack integration.
CALB has taken a different path, focusing first on large cylindrical semi-solid cells.
Its “Top-Flow High-Energy” semi-solid cylindrical battery has achieved 310 Wh/kg and has already entered mass production, supplying leading eVTOL manufacturers. In August 2025, CALB introduced the upgraded “Top-Flow All-Round” version, exceeding 360 Wh/kg and supporting 6C+ fast charging, making it particularly competitive in aerospace applications.
For all-solid-state technology, CALB’s “Boundless” battery has reached a reported 430 Wh/kg, using high-capacity electrodes and a high-conductivity lithium electrolyte capable of operating under lower pressure conditions. CALB plans limited vehicle integration in 2027, followed by mass production in 2028.
At the 2025 Munich exhibition, CALB displayed a prismatic aluminum-shell solid-state prototype, signaling its transition from R&D to validation and demonstration.
Despite the diversity of form factors, one trend is increasingly clear: pouch cells remain structurally advantageous for solid-state and especially all-solid-state batteries.
Compared with rigid housings, pouch cells offer:
Better compatibility with laminated solid electrolyte layers
Greater design flexibility for high energy density
Improved stress management and safety at the cell level
As solid-state batteries move from pilot lines to scaled production, pouch cell architectures are expected to remain a core solution for high-energy-density applications, including advanced EVs, aviation, robotics, and next-generation energy storage systems.
For battery system integrators, OEMs, and global distributors, tracking solid-state pouch cell timelines, achievable specifications, and production readiness is essential. Early alignment with suppliers on cell format, roadmap, and scalability can significantly reduce risk and unlock competitive advantages as the next generation of lithium batteries enters the market.
