Analysis of key and hot words in the industry,
Sodium battery,

▍What is KC?

Since 25^th Aug., 2008，Korea Ministry of Knowledge Economy (MKE) announced that the National Standard Committee will conduct a new national unified certification mark — named KC mark replacing Korean Certification during the time between Jul. 2009 and Dec. 2010. Electrical Appliances safety certification scheme (KC Certification) is a mandatory and self-regulatory safety confirmation scheme according to Electrical Appliances Safety Control Act, a scheme which certified safety of manufacture and sale. 

The difference between mandatory certification and self-regulatory (voluntary) safety confirmation：

For the safe management of electrical appliances, KC certification is divided into mandatory and self-regulatory  (voluntary) safety certifications as the classification of danger of  product.The subjects of Mandatory certification is applied to electrical appliances which its structures and methods of application may cause serious dangerous results or obstacle such as fire, electric shock. While the subjects of self-regulatory (voluntary) safety certification is applied to electrical appliances which its structures and methods of application can hardly causes serious dangerous results or obstacle such as fire, electric shock. And the danger and obstacle can be prevented by testing the electrical appliances.

▍Who can apply for KC certification：

All legal persons or individuals both at home and abroad who are engaged in manufacturing, assembly, processing of electrical appliance.

▍Scheme and method of safety certification：

Apply for KC certification with product’s model that can be divided into basic model and series model.

In order to clarify model type and design of electrical appliances, an unique product name will be given according to its different function.

▍ KC certification for Lithium battery

1.  KC certification standard for lithium battery：KC62133:2019
2. Product scope of KC certification for lithium battery

A. Secondary lithium batteries for use in portable application or removable devices

B. Cell is not subject to KC certificate whether for sale or assembled in batteries.

C. For batteries used in energy storage device or UPS (uninterruptible power supply), and their power which is greater than 500Wh are beyond the scope.

D. Battery whose volume energy density is lower than 400Wh/L comes into certification scope since 1^st, Apr. 2016.  

▍Why MCM?

● MCM keeps a close cooperation with Korean labs, such as KTR (Korea Testing & Research Institute) and is able to offer the best solutions with high cost performance and Value-added service to clients from the point of lead time, testing process, certification cost.

● KC certification for rechargeable lithium battery can be gained by submitting a CB certificate and convert it into KC certificate. As a CBTL under TÜV Rheinland, MCM can offer reports and certificates which can be applied for conversion of KC certificate directly. And the lead time can be shortened if applying CB and KC at the same time. What’s more, the related price will be more favorable.

News background events：
1. In April 2021, the Guiding Opinions on Accelerating the Development of New Energy Storage (Draft for Comment) jointly issued by the National Development and Reform Commission and the National Energy Administration pointed out that the diversification of energy storage technology should be maintained and accelerate the development of large-scale experiments and demonstrations of technologies such as flywheel energy storage and sodium batteries
2. When discussing the issue of the price increase of upstream raw materials at the company’s 2020 annual general meeting of shareholders, the chairman of CATL, Zeng Yuqun, revealed another important message that the sodium battery technology is mature and related products will be released in July.Word meaning analysis：Sodium-ion battery, which mainly relies on the movement of sodium ions between the positive and negative electrodes, is similar to lithium-ion batteries.Sodium batteryAdvantages of sodium batteries：
The raw material reserves of sodium salt are abundant and the price is low; The half-cell potential of sodium ion battery is 0.3 ～ 0.4V higher than that of lithium ion, that is, electrolyte solvent and electrolyte salt with lower decomposition poten tial can be used, and the choice of electrolyte is wider; Sodium ion battery has relatively stable electrochemical performance and is safer to use; Since sodium ion batteries have no over-discharge characteristics, sodium ion batter ies are allowed to discharge to zero volts.