Piedmont Achieves Milestone with Production of Battery Quality Lithium Hydroxide

• Bench-scale lithium hydroxide testwork has been successfully completed at SGS Canada
• Testwork results compare favorably with current battery quality market specifications

Piedmont Lithium Limited (“Piedmont” or “Company”) is pleased to announce that it has completed a bench-scale testwork program at SGS Canada, Inc. (“SGS”) in Lakefield, Ontario to produce initial quantities of battery-quality lithium hydroxide monohydrate. Lithium hydroxide was produced from spodumene concentrate produced at SGS from core samples taken from the Piedmont Lithium Project (“Project”). Quality results compare favorably with current market specifications for battery quality lithium hydroxide. Testwork results are shown in Table 1.

Table 1 – Results of Piedmont Lithium Hydroxide Testwork Compared with Industry Specifications

Product

Unit

PLL Results

China Spec1

Livent Spec2

Ganfeng Spec2

LiOH

(%)

>56.5

≥56.5

56.5

56.5

Na

ppm

<20

≤80

20

20

K

ppm

<10

≤20

10

10

Fe

ppm

<2

≤8

5

5

Ca

ppm

<9

≤200

15

15

Cu

ppm

<1

-

5

5

Mg

ppm

<0.7

-

-

10

Si

ppm

8

-

30

30

Cl

ppm

<10

≤50

20

20

SO4

ppm

<100

≤150

100

100

CO2

%

0.48

0.40

0.35

0.50

1. GB/T 8766-2013 T2 2. Company sources

The program results demonstrate the ability of Piedmont to concentrate and produce battery-quality lithium hydroxide via an ‘ore-to-hydroxide’ conversion route which is consistent with the chemical plant process design in the Company’s recently completed lithium chemical plant prefeasibility study.

Keith D. Phillips, President and Chief Executive Officer, commented: “The successful production of battery quality lithium hydroxide from ore samples taken from the Company’s drill core represents a major milestone for Piedmont Lithium. The Carolina Tin-Spodumene Belt is renowned for its pure spodumene mineralogy, and we are very pleased that this testwork program confirms the low-impurity profile of our 100%-owned mineral resource. With Austin Devaney now on board as our VP - Sales & Marketing, we look forward to sharing these results with prospective customers in the automotive, battery and cathode businesses, as we advance in our goal of becoming a leading American lithium hydroxide producer.”

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Keith Phillips President & CEO T: [phone] E: [e-mail]

Tim McKenna Investor and Government Relations T: [phone] E: [e-mail]