Le batterie allo stato solido, secondo me, saranno un toccasana anche per le PHEV ...

21 ore fa, maxsona scrive:

Le batterie allo stato solido, secondo me, saranno un toccasana anche per le PHEV ...

E probabilmente tra le prime applicazioni, secondo me. Hybrid e plugin. Cosi inizialmente il costo rimane meno influente e le produzioni di massa ancora non decollate possono soddisfare contratti limitati nei kwh.

Toyota cosi la vedeva per l'ingresso delle SS.

GEELY annuncia entrata in produzione delle su SS entro l'anno.

CnEVPost

Geely to complete production of its 1st all-solid-state b...

Geely Auto will complete production of its first in-house developed all-solid-state battery pack in 2026 and conduct vehicle installation verification.

Il presidente del produttore batterie S-VOLT dice che le SS di DONUT-LAB sono uno SCAM (come molti sospettano):

CnEVPost

'Scam' — Chinese battery maker Svolt's comment on Finnish...

Svolt's chairman said that Donut Lab's claimed battery parameters are contradictory, and such a battery simply doesn't exist in the world.

A breakthough in solid-state battery materials: Chinese researchers unveil “breathable” silicon anode

A collaborative research team led by Professor Chen Wanghua from the Faculty of Physical Science and Technology at Ningbo University, alongside researchers from Ningbo University of Technology and Ningbo Institute of Technology, has announced a breakthrough in solid-state lithium battery anode materials.

According to Chinese media Global Times,the team has successfully developed a novel silicon nanowire anode featuring a three-dimensional “breathable” structure, inspired by natural respiratory mechanisms, offering a promising new pathway for the development of high-performance silicon anode all-solid-state lithium batteries. The findings were recently published in the international energy materials journal, Energy Storage Materials.

All-solid-state lithium batteries are widely regarded by scientists and industry as the “ultimate goal” for next-generation battery technology due to their enhanced safety, higher energy density, and superior cycle performance. Among potential anode materials for these advanced batteries, silicon stands out for its exceptionally high theoretical capacity—ten times that of traditional commercial graphite anodes—and excellent chemical compatibility. However, silicon’s practical application has been severely limited by its dramatic volume expansion, exceeding three times its original size during charge and discharge cycles. This expansion leads to severe mechanical stress, interface detachment, and rapid degradation of electrochemical performance.

“If we liken a lithium battery to an energy storage warehouse, silicon is the recognized ‘super porter’ with immense storage potential,” explained Professor Chen Wanghua. “However, this ‘giant’ has an extremely volatile temperament: when absorbing lithium ions during charging, silicon’s volume violently expands by over three times. With repeated charge-discharge cycles, silicon acts like a balloon constantly inflating and deflating, eventually ‘collapsing’ due to exhaustion, leading to a sudden death of the battery’s lifespan.”

To address this critical challenge, the research team devised an innovative solution to enable silicon to “breathe freely” within a rigid solid-state environment. Utilizing plasma-enhanced chemical vapor deposition (PECVD) technology, they designed and fabricated a novel three-dimensional columnar silicon architecture that integrates directly with the current collector. This design boasts a “dual-phase” core-shell structure, prepared through a two-step PECVD process.

“We moved away from traditional ‘silicon powder’ and instead made silicon ‘stand’ like trees in a forest, interwoven to form a three-dimensional network on the current collector,” Professor Chen elaborated. “These nanowires have abundant voids between them, much like installing countless ‘breathing valves’ inside the battery. When lithium ions surge in, the silicon nanowires can expand into these reserved spaces without crushing the surrounding electrolyte.”

Experimental results demonstrate that this columnar silicon anode exhibits exceptional electrochemical performance and practicality. The developed battery proved capable of continuously supplying power even when bent or cut with scissors, showcasing remarkable mechanical robustness and safety.

This research establishes a new paradigm for unifying ion transport kinetics with mechanical integrity through architectural design. It provides a feasible and practical technical path for the development of high-energy, long-life all-solid-state silicon-based lithium batteries, bringing the next generation of battery technology closer to reality.

(CNC)

Ecco la scaletta di BYD, che mi sembra realistica.

2027-2029 auto gamma medio alta

2030 produzione di massa

2030-2032 auto di fascia medio-bassa

Nel periodo 2030-2032, invece, questi accumulatori saranno adottati anche da vetture elettriche di fascia media e medio-bassa. Anche perché, con l'aumento dei volumi, sempre stando a quanto dichiarato da Sun Huajun, i prezzi di produzione di batterie agli ioni di litio tradizionali e di batterie allo stato solido saranno simili.

InsideEVs Italia

BYD accelera sulle batterie allo stato solido: in vendita...

BYD annuncia il debutto di batterie allo stato solido su auto elettriche premium nel 2027. Dal 2030 costeranno come quelli agli ioni di litio

FAW annuncia l'installazione della sua (nel senso sviluppata da loro) batteria a stato semi-solido, 142 kWh con densità celle 500 Wh/kg (gulp)

CarNewsChina.com

FAW pioneers 142 kWh Li‑Mn liquid‑solid state battery int...

The pack reaches 142 kWh with >500 Wh/kg cells, marking first vehicle integration by FAW.

Breakthrough: liquid-solid-state lithium battery retains 85 % capacity at –34 °C

Chinese researchers have developed a liquid-solid-state (semi-solid-state) lithium battery capable of sustained operation in extreme cold, retaining over 85 % of effective capacity after eight hours at –34 °C. The work was led by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), and reported by Global Times. Validation occurred through industrial drone flights and robotics simulations, confirming a reliable energy supply without external insulation.

The battery system combines low-temperature electrolyte formulations, a liquid-solid functional separator, and an AI-based power management system. Together, these components stabilise energy output under subzero conditions, addressing sharp capacity drops and start-up failures typical of conventional lithium-ion packs below –20 °C. Project leader Zhang Meng noted that the liquid-solid architecture mitigates reduced activity and the risk of total failure in extreme cold.

Demonstrated applications include drones for inspection, logistics, and emergency communication, as well as robotics operating in high-altitude or cold-season environments. Researchers highlight plug-and-play compatibility, enabling deployment without additional thermal insulation.

While the initial focus is on industrial equipment, the liquid-solid architecture is directly relevant to electric vehicles (EVs) in cold regions. Conventional EV packs often lose 50–80% of their capacity at temperatures below –20°C, reducing range and reliability. By sustaining high capacity at –34 °C, this design offers a pathway to improved EV performance in high-latitude markets, subject to scaling and integration with vehicle thermal management systems.

The technology represents an advancement in cold-climate energy storage research in China. Adaptation for multi-hundred-kWh EV packs would require further validation, safety testing, and platform integration. Beyond automotive applications, potential applications include 3C electronics, logistics drones, and outdoor equipment, thereby reinforcing China’s role in advancing battery systems for extreme environments.

The technology remains in the demonstration phase, with future development aimed at scaling for broader industrial and automotive use, including potential deployment in northern-region EVs, high-altitude robotics, and cold-season logistics operations.

(CNC)

Solid-state battery breakthrough hinges on cathode innovation, not electrolytes

The third China solid-state battery innovation summit in Beijing, earlier this month, highlighted industry-wide challenges, with Professor Xia Dingguo of Peking University noting that energy density, primarily determined by the cathode, remains critical, and that cathode innovation, rather than electrolyte breakthroughs, is key to moving solid-state batteries from laboratories to commercial production, as Autohome reports.

The resurgence of interest in solid-state batteries is linked to two main factors: substantial improvements in overall research capabilities since the 1990s, and the growing demand for higher energy density, safety, and material optimisation in EV applications. Solid-state batteries are expected to achieve high energy density, safety, long life, and low cost, but without breakthroughs in cathode technology, their industrial significance is limited.

Current challenges centre on interface stability and material compatibility. Experiments with high-nickel cathodes demonstrate improved thermal stability but retain safety risks under high current or voltage conditions due to local polarisation, formation of a high-impedance layer, and eventual performance degradation. Fluorine doping can temporarily stabilise cycling, but degradation accelerates beyond around 125 cycles. Crystalline cathode materials are anisotropic, and even small volume changes can concentrate stress at interfaces, limiting cycle life.

Material compatibility further constrains commercial adoption. Different solid electrolytes, including chlorides, sulfides, and oxides, exhibit varying moduli and interface behaviour. Oxides are too rigid; sulfides and chlorides often require applied pressure, which complicates manufacturability. Addressing these challenges will require low-modulus, interface-friendly electrolytes or optimised polymers capable of broad voltage windows and high conductivity.

China’s leading battery manufacturers, including CATL, BYD, and Eve Energy, have begun integrated development of cathode and electrolyte systems, creating patent protections while optimising cell performance. Advances in dry electrodes, co-sintering, and cold sintering are further enabling scalable production and reducing reliance on complex coating processes.

Looking forward, the industry is expected to pursue diverse paths for different applications: high-end EVs with polymer electrolytes and high-nickel or lithium-rich cathodes; mass-market EVs focusing on LiFePO4 systems, emphasising safety and cost; and specialised applications exploring sulfide electrolytes paired with sulfur cathodes.

The summit concluded that cathode material innovation is the “bull’s nose” of industrial solid-state batteries. Electrolytes remain important, but energy density, cost, and stability fundamentally depend on cathode development. The future will require dual-track progress in material innovation and engineering manufacturing to ensure China’s leadership in the global solid-state battery sector.

(CNC)