Introduction:In the race of industrialization of sodium ion batteries, the technical route of positive electrode materials has never stopped. Layered oxides, Prussian blue analogues, polyanionic compounds... who canEnergy density, safety, costAchieving the optimal balance in the three dimensions? The answer given by Na Yuan New Materials is——Modified Sodium Iron Sulfate (NFS)A new type of polyanion positive electrode material based on exclusive "soft hard combination" modification technology is redefining the cost-effectiveness boundary of sodium electricity.

1、 Product positioning: Targeting essential scenarios, balancing performance and cost

The core product of Na Yuan New Materials isModified Sodium Iron Sulfate (NFS)It belongs to a new type of polyanion sodium ion positive electrode material system. The original intention of its design is not to pursue the ultimate goal of a single indicator, but to achieve it through material genetic engineeringHigh voltage, high voltage, high safety, extremely low cost, easy to recycleMultidimensional balance. Relying on its self-developed "soft hard combination" core modification technology, NFS has been able to accurately adapt to the industrial landing needs of various scenarios such as lightweight power, UPS power supply, start stop system, energy storage power station, etc.

2、 Core Technology: Exclusive "Soft Hard Combination" Modification Solution, Cracking the Natural Shortcomings of NFS

Although traditional pure phase sodium iron sulfate (NFS) has inherent advantages such as cheap raw materials and high voltage, it has long been plagued byLow compaction density (1.8-2.0 g/cm ³), rapid decay during high temperature cycling, and gas production bulgingThe three major industry diseases. Sodium Yuan New Materials innovatively proposesDesign scheme of "soft hard combination" of main materials and special additives——It is not a simple physical mixing, but the introduction of a "skeleton" type hard additive from the crystal structure level to reconstruct the internal ion transport channels and mechanical stability of the material.

List of Core Breakthrough Data:

This technology not only builds a solid patent barrier, but also elevates NFS from a "low-end backup material" to a "high-end scene optional material".

3、 Voltage platform and energy density: 3.6-3.7V high voltage, directly targeting the 200 Wh/kg target

钠远NFS的稳定电压平台高达3.6V-3.7，高于普鲁士白（约3.1~3.2V），甚至优于部分层状氧化物（约3.3~3.5V）。高电压平台直接转化为更高的电池能量密度：

• 常规电芯设计：能量密度可达 120 Wh/kg 以上（较纯NFS提升约20%）；

• 搭配无负极钠电池体系：理论能量密度可突破 200 Wh/kg，为下一代高比能钠电提供切实可行的正极方案。

四、安全性能：热稳定与针刺实测，不起火、不爆炸

安全是储能和动力场景的第一红线。NFS自身具有稳固的共价键结构，热分解温度远高于层状氧化物。钠远新材在常温针刺、高温针刺、甚至空气环境下满电拆解等极端测试中，改性NFS均表现出 不起火、不爆炸 的优异特性。同时，由于添加剂从根源上抑制了SO₄²⁻基团在循环过程中的分解产气，电池鼓包风险大幅降低，安全性全面领先行业主流材料。

五、成本优势：原料来自工业副产物

钠远NFS的生产原料选用 硫酸亚铁、硫酸钠 等大宗工业副产物，完全不依赖钴、镍、钒等贵金属。在大规模量产后，整体BOM成本远低于其它材料。横向对比：

• 仅为NFPP 成本的 40%；

• 仅为层状氧化物成本的 25%；

• 与普鲁士白成本持平甚至更低。

这样的成本结构，使得NFS在大规模储能、两轮车换电等价格敏感型市场中具备极强的穿透力。

六、绿色闭环：水溶性好，回收再生成色

与传统正极材料需强酸或高温火法回收不同，硫酸铁钠具有良好的水溶性，可通过简单水浸工艺实现有价金属（铁、钠）的分离与回收，残渣可无害化处理。这一特性使NFS天然契合绿色闭环再生产 的环保趋势，既降低全生命周期碳排放，也带来额外的回收经济价值。

七、应用场景全面覆盖：从轻型动力到高端储能

基于改性后的综合性能跃升，钠远NFS系统料已摆脱“仅限低速电动车”的刻板标签，当前可全面适配：

• 轻型动力：两轮/三轮电动车（高倍率、长循环需求）；

• UPS 电源 & 启停电源：高安全、高可靠、宽温域；

• 电力储能：户用储能、工商业储能（低成本、长寿命、热稳定）；

• 特殊高温场景：如机房备电、户外基站（45℃以上循环寿命突破2000次）。

相比之下，未改性的纯NFS仅能用于对性能要求较低的低速车或小型储能，远无法触达上述高端市场。

八、总结：改性NFS——钠电聚阴离子路线的“六边形战士”

钠远新材通过独创的“软硬结合”添加剂技术，精准弥补了传统硫酸铁钠的压实、高温循环、产气三大短板，同时保留其 超高电压、极致成本、本征安全、易回收 的天然基因。在钠离子电池正极材料“成本优先”与“性能升级”的两难抉择中，改性NFS提供了近乎最优的折中方案——甚至在某些维度（如电压、安全性）上形成反超。

对于电芯企业、储能集成商以及两轮车主机厂而言，钠远新材的NFS系统料不仅是降本替代选项，更是打开新应用场景的钥匙。 随着无负极钠电池技术的成熟，其200 Wh/kg的能量密度潜力，有望将钠电从“低端替代”推向“主流竞争”的新高度。