negative electrode for electrochemical cells
By using sintered iron agglomerated particles and direct reduced iron (DRI) materials to construct composite metal electrodes, the problem of difficulty in achieving long-term energy storage in existing energy storage technologies is solved, and an efficient and stable long-term energy storage system is achieved.
CN112805851BActive Publication Date: 2025-03-18FORM ENERGY INC
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Patent Information
- Application Number
- CN201980063958.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-06-28
- Filing Date
- 2019-07-26
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2039-07-26
AI Technical Summary
Technical Problem
Existing energy storage technologies are difficult to achieve long-term and ultra-long-term (≥8 hours) energy storage systems, especially in terms of matching power generation and demand in the power grid.
Method used
A composite metal electrode consisting of sintered iron agglomerated particles, including metal agglomerated particles arranged in multiple layers, is used to treat the agglomerated particles by mechanical, chemical and thermal methods to improve their performance.
Benefits of technology
It realizes efficient operation of long-term energy storage systems, can maintain charge for at least 24 hours, and improves the energy density and cycle stability of the battery.
✦ Generated by Eureka AI based on patent content.
Abstract
Multiple embodiments provide a battery, a large-capacity energy storage system including the battery, and / or a method of operating the large-capacity energy storage system including the battery. In multiple embodiments, the battery may include a first electrode, an electrolyte, and a second electrode, wherein one or both of the first electrode and the second electrode include direct reduced iron ("DRI"). In multiple embodiments, the DRI may be in the form of a pellet. In multiple embodiments, based on the total mass of the pellet, the pellet may include at least about 60% by weight of iron by elemental mass. In multiple embodiments, one or both of the first electrode and the second electrode include about 60% to about 90% iron and about 1% to about 40% of a component, the component including one or more materials selected from SiO2, Al2O3, MgO, CaO and TiO2.
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