Is EF9 the big surprise waiting at Nio Day 2021? [Update]

As per the website of the China National Intellectual Property Administration, electric carmaker Nio has registered the trademark for ‘EF9.’ While there is no information about the body style of the Nio EF9 and a registration certificate is not a substantiation of intended usage in an upcoming model, ElectricVehicleWeb takes a calculated guess that it could be Nio’s long-rumored sports car, which could see its unveil at the Nio Day 2021.

Nio ET7 front quarters unveiled at Nio Day
Nio Day 2020, which was held in January this year, saw the unveil of the Nio ET7. Nio Day 2021 is expected to host the premiere of the smaller, second sedan, besides new surprises. Image: Nio.

Electric car enthusiasts are well aware of the Nio Day annual event, which garners similar excitement levels as Tesla’s Battery Day. The company pushed the Nio Day 2020 event to this year (held in January 2021), where the Nio ET7 was unveiled. While there is no announcement from the company, expect Nio Day 2021 to be scheduled within Q1 2022, as explained later in the story. What Nio has confirmed, however, is that the next launch from the company is another sedan.

As per Nio’s naming strategy, the ETs are reserved for sedans, ESs for SUVs, and ECs for coupe/coupe SUVs, whereas the numbers indicate the hierarchy of the model within the range. Hence, the ‘9’ in the Nio EF9 certainly highlights high-end tech and performance for the forthcoming model, which and could have the Tesla Roadster‘s performance figures as a benchmark.

Nio EP9 convertible patent image
Nio has filed a patent application to protect the design of a Nio EP9 convertible, as per a CnEVPost report. Image Source: CnEVPost

There are rumors that the Nio EF9 could be the convertible version of the Nio EP9. The latter was the world’s fastest electric car when it broke cover in November 2016. With a lap time of 7 mins 5.12 seconds, it was the fastest EV on the Nurburgring Nordschliefe. With an output of 1,360 PS, the EP9 can accelerate from naught to 200 km/h in 7.1 seconds and attain a top speed of 313 km/h. It has a swappable battery system, and it can travel up to 427 km on a full charge.

Whatever the final look and design, the Nio EF9 could sport the ultra-high density solid-state battery cells, which incidentally was announced at the Nio Day 2020 this year. These cells promise a density of up to 360 Wh/kg and were confirmed to reach customers by the fourth quarter of 2022. Existing Nio users can swap their battery packs with a 150 kWh solid-state cell, which brings with it range improvements up to 910 km on the EC6, and 1,000 km on the recently unveiled ET7 which will initially retail with 70 kWh or 100 kWh battery packs.

Nio 150kWh solid state battery
Nio Day 2021 is expected to throw more light on the 150 kWh solid-state battery cell, especially, if the manufacturing will be from Solid State Lion. Image: Nio.

These solid-state cells boast new technologies including Nickel-Ultrarich Cathode and Silicon Carbide (SiC) Composite Anode. Interestingly, reports speculate that these high-end batteries will not be made by established player CATL, rather a new company called Solid State Lion will be manufacturing them. Similar to the EF9, there is little information available on Solid State Lion, other than the fact that it is connected to the Institute of Physics at the Chinese Academy of Science.

We will closely follow the Nio EF9, but it’s clear that the anticipation for Nio Day 2021 has commenced.

Planning begins for Nio Day 2021

Nio has started planning for the Nio Day 2021, which it could conduct between 1 December 2021 and 15 January 2022. Currently, the company is looking for the right city in China to host the event.

In June, local Nio clubs made applications for having the Nio Day 2021 in their city. The applicant city must offer an indoor venue with a capacity of at least 8,000 people. Moreover, the location should be available for ten consecutive days between the mentioned dates. Another basic requirement was that the applicant city shouldn’t have hosted a Nio Day event in the past eight years.

Nio selected three candidate cities for the next Nio Day on 3 July: Hefei, Suzhou, and Xi’an. According to another CnEVPost report, Nio clubs from Changsha, Guanzhou, Harbin, Haikou, Suzhou, Tianjin, Wuhan, and Zhengzhou were the other applicants. From 20-22 July, the Nio app will show the three final candidates, and in the next two days (July 23 and 24), the app users will be able to vote for the final location.

Every Nio takes birth in Hefei, the capital and largest city of China’s Anhui Province. A JAC-Nio joint venture plant started production of Nio EVs on 27 May 2018, and it will continue as the sole production site for the foreseeable future. On 24 May 2021, Nio announced that JAC plans to expand the annual production capacity to 240,000 units to meet the growing demand.

Will Hefei then host Nio Day 2021? We’ll find out later this month!

Featured image: Nio