Organic materials are of great interest in various applications owing to their intrinsic designability

molecular controllability

ease of synthesis

and ecological sustainability. In this work

a facile and mild wet-chemical strategy was carried out to construct a conjugated Ni-BTA coordination polymer

via

the π-d hybridization with 1

2

4

5-benzenetetramine (BTA) as π-conjugated ligands and Ni

2+

as metallic centers

which exhibits a unique two-dimensional nanosheet-like structure with available active sites

sufficient electrochemical activity

and multi-electron redox capability. On the one hand

the as-prepared Ni-BTA coordination polymer as electrode material exhibits a rapid

reversible

and efficient energy storage behavior with a large reversible capacity of 198 mA·h·g

-1

at 1 A·g

-1

and a high-rate capability of 150 mA·h·g

-1

at 20 A·g

-1

in alkali-ion aqueous electrolyte

which are further demonstrated by the

in-situ

Raman investigation. On the other hand

the Ni-BTA coordination polymer as anti-corrosion additive was introduced into the epoxy resin to achieve a Ni-BTA epoxy coating

which shows a l

ong-term anti-corrosion performance with a low corrosion rate of 4.62×10

-6

mm·a

-1

and a high corrosion inhibition efficiency of 99.86%

suggesting its great engineering potential as the bi-functional organic material for high-performance energy storage and corrosion protection.