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Donut‘s supercapacitor or an all-solid-state battery

Is this a supercapacitor or an all-solid-state battery? 2026 post

January 20, 2026

New post from WeChat Official Account: Lithium Matters (言之成锂) Is this a supercapacitor or an all-solid-state battery? 2026 post Donut’s latest all-solid-state battery has been going viral across the internet over the past few days. Simultaneously, it has sent shockwaves through the overseas battery community. The performance data they released is simply mind-blowing—so incredible that it feels like technology from another planet.   A friend of mine, James—an industry veteran in the battery sector based abroad—has conducted an in-depth investigation and interpretation of this company and its newly released products. His detailed analysis is as follows: The specifications for Donut’s all-solid-state battery are as follows: Energy Density: 400 Wh/kg; Fast

Silicon vs. Graphite The Micro-War Defining the Future of Battery Performance

Silicon vs. Graphite: The Micro-War Defining the Future of Battery Performance 2026 post

January 20, 2026

Silicon vs. Graphite: The Micro-War Defining the Future of Battery Performance Under the microscope, silicon and graphite particles act like two athletes with starkly different temperaments, collaborating yet competing fiercely on the charging and discharging stage; the fate of the battery hinges on the outcome of this microscopic gambit. The composite electrode is formed by mechanically blending nano-silicon particles with micron-sized graphite particles, yielding electrochemical performance that is significantly superior to that of single-material batteries.   Silicon boasts a staggering theoretical capacity of 3,579 mAh/g—nearly ten times that of traditional graphite anodes—positioning it as a pivotal material for achieving high-energy-density batteries. By optimizing the competitive interplay between silicon and graphite,

Fig. 2 Component mass distribution of the battery with a 20 μm lithium anode

Design Details of CATL’s Anode-Free Battery 2025

January 19, 2026

On April 21, 2025, at its Super Technology Day, CATL officially unveiled its “Self-Generated Anode” (SGA) technology. This innovation eliminates the use of traditional materials like graphite as the anode. Instead, by precisely controlling the deposition process of metallic elements (such as Lithium or Sodium), it forms a uniform and dense metallic layer directly on the current collector surface, significantly boosting the battery’s energy density. Through nanoscale interface structural design, the technology optimizes ion conduction paths, ensuring stable metal deposition during charge and discharge cycles while minimizing side reactions and active ion loss. This breakthrough addresses the long-standing challenge of cyclic degradation in lithium-metal anodes. Consequently, the ion conduction rate

HPPC test characteristic curve (a) and full HPPC test procedure (b)

HPPC test for EV batteries 2026 post

January 19, 2026

Hybrid Pulse Power Characterization (HPPC) is a test designed to characterize the pulse charging and discharging performance of EV batteries. It serves as a critical methodology in battery performance assessment, primarily targeting the performance evaluation and power management of battery systems, modules, and battery cells for hybrid electric vehicles (HEVs). This article focuses on the test principles, methodologies, and practical application cases of HPPC. 1. Definition and Scope of HPPC Test for EV batteries HPPC (Hybrid Pulse Power Characterization) is a characterization test used to demonstrate the pulse charging and discharging performance of traction batteries. The characteristic curve of the HPPC test is shown in Figure 1 (a). Its objective

Welion

Welion achieves 824 Wh/kg energy density in lab, targets 1000 Wh/kg

January 16, 2026

Welion achieves 824 Wh/kg energy density in lab, targets 1000 Wh/kg China’s solid-state battery company Welion New Energy Chairman Yu Huigen has revealed a breakthrough in solid-state battery technology, announcing that the company has achieved an industry-leading energy density of 824 watt-hours per kilogram (Wh/kg) in laboratory tests, with future targets exceeding 1000 Wh/kg. Yu stated during a recent TV programme, Dialogue, of Chinese state media CCTV, “Our laboratory tests have demonstrated solid-state batteries with energy densities reaching 824 Wh/kg, and we expect to break the 1000 Wh/kg barrier in the long term” Despite the technical breakthrough, Yu acknowledged that cost factors, particularly expensive raw materials in sulfide-based electrolyte systems,

Anode-Free Battery Doubles Electric Vehicle Driving Range

1270 Wh/L! How Anode-Free Battery Technology Doubles EV Range

January 14, 2026

Synergistic Coupling of Host and Electrolyte Achieving1270 Wh/L in Anode-Free Battery. Anode-Free Battery Doubles Electric Vehicle Driving Range. POSTECH, KAIST, and Gyeongsang National University achieve a record-breaking energy density of 1,270 Wh/L Key Highlights of Anode-Free Battery Technology Breakthrough Energy Density: Achieved a record-breaking 1,270 Wh/L using Anode-Free Battery Technology. Performance: Nearly double the driving range compared to conventional lithium-ion batteries. Innovation: Successful implementation of a Reversible Host (RH) and Designed Electrolyte (DEL) in Anode-Free Battery Technology. Commercial Viability: Validated in pouch-type cells, moving Anode-Free Battery Technology closer to real-world EV applications.   Could an electric vehicle travel from Seoul to Busan and back on a single charge? Could drivers

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