The world's first achievement! Our country's sodium-ion batteries have made a major breakthrough, and the Energy Storage Battery ETF E Fund (159566) briefly rose nearly 2% during trading.

As of 10:34 on April 7, 2026, the Guozheng New Energy Battery Index (980027) is up 0.88%. The Energy Storage Battery ETF (E Fund) (159566) has once risen by nearly 2%, and is now up 0.94%. During intraday trading, turnover was 2.29%, with trading volume of RMB 154 million.

As of April 3, the Energy Storage Battery ETF (E Fund) (159566) has seen its fund size increase by RMB 2.57B over the past three months, and the number of units has increased by 1.24B units over the past one month, achieving significant growth. In terms of capital inflows, the Energy Storage Battery ETF (E Fund) (159566) has “pulled in” a total of RMB 18.5398 million over the past nine trading days.

In terms of news, it is a global first! My country’s sodium-ion battery has achieved a major breakthrough. On April 6, the Hu Yongsheng team from the Institute of Physics, Chinese Academy of Sciences, published a headline result in《Nature·Energy》: the team successfully developed a polymerizable non-flammable electrolyte (PNE) with self-protection functionality. For the first time globally, they achieved a complete blockade of thermal runaway in ampere-hour-level sodium-ion batteries. The team broke the traditional understanding that “flame-retardant electrolytes equal safety,” stepped out of a single line of defense, and built a three-in-one intelligent safety protection system of “thermal stability—interfacial stability—physical isolation.” When the battery temperature abnormally rises to above 150°C, the PNE automatically solidifies from liquid into a dense barrier, like building an “intelligent firewall” inside the battery, completely cutting off the transmission path of thermal runaway.

CITIC Securities said that ESIE 2026, the 14th Energy Storage International Summit and Exhibition held in Beijing on April 1–3, 2026, attracted more than 800 exhibitors, and exhibition attendance heat has clearly rebounded. In this exhibition, large-capacity battery cells, sodium-ion batteries, and AIDC solutions have become key areas that each company highlights. The institution believes that with Document No. 136 from the NDRC canceling mandatory capacity allocation, and Document No. 114 establishing a national-level capacity pricing mechanism, domestic energy storage will shift from cost-first to value creation, and the competitive landscape will improve.

The Energy Storage Battery ETF (E Fund) (159566, Feeder Fund A/C: 021033/021034) closely tracks the Guozheng New Energy Battery Index. The Guozheng New Energy Battery Index is composed of listed companies related to energy storage batteries in the new energy power generation industry from the Shanghai, Shenzhen, and Beijing stock exchanges, to reflect changes in the security prices of the relevant theme area. The index focuses on the energy storage industry chain and benefits deeply and continuously from the upward trend of the energy storage industry beta.