All-solid-state electrochromic Li-ion hybrid supercapacitors for intelligent and wide-temperature energy storage

Recent advances in solid‐state supercapacitors: From emerging materials to advanced applications

“…Some electrode materials reversely change their color under electrochemical reduction/oxidation processes or sufficient electrochemical potential 484 . This can be clearly observed when they are deposited over transparent conductive current collectors (eg, fluorine‐doped tin oxide (FTO) 485‐487 and tin‐doped indium oxide (ITO)) 488 . Albeit this phenomenon was discovered in the late 1960s, 489 the study of electrochromism has been greatly advanced over the past decade, particularly with state‐of‐the‐art applications such as energy‐efficient architecture, smart windows, displays, antiglare mirrors, electrochromic strips, electrochromic sunglasses, and active camouflage gear 490 .…”

Towards two-dimensional color tunability of all-solid-state electrochromic devices using carbon dots

“…Through adjusting the content of CDs, ECDs can not only exhibit rich color changes but also improve their electrochemical stability. Significantly, the fabricated ECD can still maintain a stable and reversible color change even in harsh environments where operating temperatures are constantly changing from RT to 70°C ( Lei et al, 2019 ; Liu et al, 2021 ; Wang et al, 2022 ). We envision that our as-obtained ECDs with large charge capacity, multicolor display and high cycle stability can be promising for future color switching/energy storage applications and may also provide new insights into the design of multifunctional electronics.…”

High-performance all-solid-state electrochromic asymmetric Zn-ion supercapacitors for visualization of energy storage devices

“…[1][2][3][4][5][6][7][8][9] Electrochromic energy storage devices (EESDs) integrate electrochromic properties and energy storage function into a single platform, which provides promising potential in the application eld of smart-portable electronic devices. [10][11][12] Currently, various mono-valent/multivalent ion (Li + /Na + /K + /Zn 2+ /Al 3+ ) electrochromic batteries/supercapacitors have emerged. 4,10,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Notably, electrochromic Zn-ion supercapacitors (EZSCs) may become a potential candidate for EESDs because of the advantages of abundant Zn reserves, non-toxicity, pHneutrality, a small ionic radius (0.74 A) and high theoretical capacity.…”

“…[10][11][12] Currently, various mono-valent/multivalent ion (Li + /Na + /K + /Zn 2+ /Al 3+ ) electrochromic batteries/supercapacitors have emerged. 4,10,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Notably, electrochromic Zn-ion supercapacitors (EZSCs) may become a potential candidate for EESDs because of the advantages of abundant Zn reserves, non-toxicity, pHneutrality, a small ionic radius (0.74 A) and high theoretical capacity. 24,29,30 To date, EZSCs are generally designed and fabricated using Zn foil and transition metal oxide (TMO) materials as electrodes.…”